Stator assembly, compressor motor, compressor and refrigerator

Abstract

FIELD: compressor equipment.SUBSTANCE: stator assembly comprises the stator core and stator winding stacks. The stator core has a ring-shaped structure, and the space inside the ring-shaped structure is configured to install a rotor. The stator winding packages are sequentially arranged in the circumferential direction of the ring structure to form at least one arc section, wherein a gap of winding packages is formed between two adjacent ends of at least one arc section. The gap of the winding packages is configured to arrange the compressor cylinder socket in such a way that the compressor cylinder socket is located near the end surface of the stator core in the gap of the winding packages.EFFECT: distance between the compressor cylinder seat and the stator core is effectively reduced, which allows for a reduction in the overall height of the compressor.11 cl, 9 dwg

Description

AREA OF TECHNOLOGY

[0001] The present invention relates to the field of compressor equipment, in particular to a stator assembly, a compressor motor, a compressor and a refrigerator. BACKGROUND

[0002] The permanent magnet synchronous motors used in commercially available variable frequency drive refrigerator compressors are mainly three-phase winding packages, and the stator winding on the stator core is uniformly distributed around the central axis, forming a complete annular winding structure around the rotor. When designing the compressor cylinder seat, it is necessary to raise the cylinder seat relative to the stator core so that the stator winding package does not end up higher than the stator core, which would lead to an increase in the overall height of the compressor. For refrigerator manufacturers, an increase in the compressor height means a need to increase the size of the refrigerator body. If the overall volume of the refrigerator remains constant, the compressor can only be installed in place of part of the refrigeration and freezer compartments, which will lead to a limitation in the capacity of the refrigerator. SUMMARY OF THE INVENTION

[0003] The object of the present invention is to provide a stator assembly, a compressor motor, a compressor and a refrigerator that can effectively reduce the distance between the compressor cylinder seat and the stator core by improving the stator assembly, which can reduce the height of the compressor as a whole.

[0004] The embodiments of the present invention are realized as follows.

[0005] According to the first aspect, in one embodiment of the present invention, a stator assembly is provided, comprising a stator core and at least one stator winding package; the stator core has an annular structure, and the space inside the annular structure is intended for installing a rotor; a plurality of stator winding packages are provided, sequentially arranged in the circumferential direction of the annular structure to form at least one arc section, wherein a gap of winding packages is formed between two adjacent ends of at least one arc section; the gap of winding packages is intended to accommodate a compressor cylinder seat in such a way that the compressor cylinder seat can be located near the end surface of the stator core in the gap of winding packages.

[0006] In a further embodiment of the invention, the stator core comprises a plurality of through slots arranged at intervals in the circumferential direction of the rotor, wherein the through slots extend in the axial direction of the annular structure, and stator teeth are formed between adjacent through slots; each of the stator winding packages passes through two adjacent through slots and is wound around a stator tooth.

[0007] In a further embodiment of the invention, the number of stator teeth corresponds to the number of stator winding packages.

[0008] In a further embodiment of the invention, a support platform is provided in the gap of the winding packages on the stator core; the support platform has a working support surface corresponding to the compressor cylinder seat; and the working support surface is perpendicular to the axial direction of the rotor.

[0009] In an additional embodiment, a safety groove is provided on the side of the support platform facing away from the rotor, the longitudinal direction of which corresponds to the axial direction of the rotor.

[0010] In an additional embodiment of the invention, two winding package gaps are provided, symmetrically located relative to the rotor, and two compressor cylinder sockets, the installation positions of which mutually correspond to the positions of the two winding package gaps.

[0011] According to the second aspect, in one embodiment of the present invention, a compressor motor is provided, comprising the above-disclosed stator assembly, a compressor cylinder seat, and a rotor; the rotor is installed inside the annular structure of the stator assembly; the compressor cylinder seat is located at one end of the stator assembly, and the compressor cylinder seat is located near the end surface of the stator core in the gap of the winding packages.

[0012] In a further embodiment of the invention, the compressor cylinder socket comprises at least one first connecting portion; the stator core comprises at least one second connecting portion, and at least one first connecting portion and at least one second connecting portion are connected by means of at least one locking element.

[0013] In a further embodiment of the invention, a plurality of first connecting parts are provided, arranged at intervals around the rotor axis; the number of second connecting parts corresponds to the number of first connecting parts, and the second connecting parts are connected to the first connecting parts and correspond to them one-to-one.

[0014] According to a third aspect, in one embodiment of the present invention, a compressor is proposed, comprising an outer protective shell and a compressor motor disclosed above, located in the outer protective shell; a cylinder located on a cylinder seat of the compressor, a piston located in the cylinder, wherein the piston comprises a crankshaft connecting rod connected to a rotor, and the rotor initiates a reciprocating movement of the piston in the cylinder by means of the crankshaft connecting rod.

[0015] According to a fourth aspect, in one embodiment of the present invention, a refrigerator is further provided comprising the compressor disclosed above and a storage compartment for items.

[0016] The advantages of embodiments of the present invention include:

[0017] A stator assembly proposed in one embodiment of the present invention comprises a stator core and stator winding packages; the stator core according to the embodiment of the present invention has a ring-shaped structure, and the space inside the ring-shaped structure is used to install a rotor. In one embodiment of the present invention, a plurality of stator winding packages are provided, sequentially arranged in the circumferential direction of the ring-shaped structure to form an arc section, wherein a gap of winding packages is formed between the two ends of the arc section. In one embodiment of the present invention, a compressor cylinder seat is located in the gap of the winding packages, that is, the compressor cylinder seat can be located near the end surface of the stator core in the gap of the winding packages.Unlike the prior art, the stator winding packages in one embodiment of the present invention are not located completely along the annular path around the rotor to form a gap of the winding packages, i.e. the compressor cylinder seat can be located as close as possible to the stator core, which makes it possible to eliminate the gap between the compressor cylinder seat and the end surface of the stator core and thereby reduce the size of the compressor in the axial direction of the rotor.

[0018] In one embodiment of the present invention, a compressor motor is provided, comprising the stator assembly disclosed above, a compressor cylinder seat, and a rotor; the rotor according to this embodiment of the present invention is installed inside the annular structure of the stator assembly; the compressor cylinder seat according to this embodiment of the present invention is located at one end of the stator assembly, and the compressor cylinder seat is located near the end surface of the stator core in the gap of the winding packages. In the compressor motor proposed in one embodiment of the present invention, the stator assembly disclosed above is used, which makes it possible to arrange the compressor cylinder seat as close as possible to the stator core, thereby eliminating the gap between the compressor cylinder seat and the end surface of the stator core and, further, reducing the size of the compressor in the axial direction of the rotor.

[0019] In one embodiment of the present invention, a compressor is provided that comprises an outer protective casing and a compressor motor disclosed above, located in the outer protective casing; a cylinder is located on a cylinder seat of the compressor, a piston is located in the cylinder, the piston comprises a crankshaft connecting rod connected to a rotor, and the rotor initiates a reciprocating movement of the piston in the cylinder via the crankshaft connecting rod. In the compressor proposed in one embodiment of the present invention, the compressor motor disclosed above is used, and the overall height of the compressor can be reduced, which makes it possible not to occupy the volume of the refrigeration and freezer compartments and thereby increase the capacity of the refrigerator.

[0020] In one embodiment of the present invention, a refrigerator is further provided, comprising the compressor disclosed above and a storage compartment. The refrigerator proposed in one embodiment of the present invention comprises the compressor disclosed above. Compared with the prior art, the compressor disclosed above is characterized by a small volume, which makes it possible to increase the capacity of the refrigeration and freezer compartments of the refrigerator. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] To more clearly illustrate the technical solutions proposed in the embodiments of the present invention or known in the prior art, the drawings accompanying the disclosure of the exemplary embodiments of the invention will be briefly described below. It should be understood that the following drawings illustrate only some exemplary embodiments of the present invention and therefore should not be considered as limiting the protected scope. A person skilled in the art can create other drawings based on these drawings without creative effort.

[0022] FIG. 1 shows a first structural diagram of a stator assembly according to embodiments of the present invention.

[0023] FIG. 2 shows a second structural diagram of a stator assembly according to embodiments of the present invention.

[0024] FIG. 3 shows a third structural diagram of a stator assembly according to embodiments of the present invention.

[0025] FIG. 4 shows a fourth structural diagram of a stator assembly according to embodiments of the present invention.

[0026] FIG. 5 shows a fifth structural diagram of a stator assembly according to embodiments of the present invention.

[0027] FIG. 6 shows a sixth structural diagram of a stator assembly according to embodiments of the present invention.

[0028] FIG. 7 shows a block diagram of a compressor according to embodiments of the present invention.

[0029] FIG. 8 shows a first structural diagram of a stator assembly according to the prior art.

[0030] FIG. 9 shows a second structural diagram of a stator assembly according to the prior art.

[0031] Reference designations:

[0032] 100 - stator core; 101 - stator winding pack; 102 - ring structure; 103 - winding pack gap; 104 - compressor cylinder socket; 105 - through groove; 106 - stator tooth; 107 - support platform; 108 - working support surface; 109 - safety groove; 110 - rotor; 111 - first connecting part; 112 - second connecting part; 113 - outer protective shell; 114 - compressor motor; 115 - cylinder; 116 - piston; 117 - crankshaft connecting rod.DETAILED DESCRIPTION OF EXAMPLES OF EMBODIMENT OF THE INVENTION

[0033] To clarify the objectives, technical solutions, and advantages of the embodiments of the present invention, the latter will be clearly and comprehensively disclosed below with reference to the drawings illustrating the embodiments of the present invention. It is obvious that the disclosed embodiments of the invention represent not all, but only a part of the embodiments of the present invention. The components of the embodiments of the present invention disclosed and shown in the drawings can be arranged and implemented in various configurations.

[0034] Thus, the following detailed disclosure of embodiments of the present invention with reference to the drawings does not limit the protected scope of the present invention and serves only to illustrate selected embodiments of the present invention. Based on the embodiments of the present invention, any other embodiments of the invention obtained by specialists in the field without creative efforts are included within the protected scope of the present invention.

[0035] It should be noted that the same reference symbols in the following drawings refer to similar elements, so an element defined in one drawing does not require further definition and explanation in subsequent drawings. Furthermore, the terms "first," "second," "third," etc. are used for descriptive purposes only and are not to be interpreted as denoting or implying relative importance.

[0036] It should be noted that in the disclosure of the present invention, unless explicitly stated otherwise, the terms "provide," "install," "link," and "connect" should be understood in a broad sense, such as a fixed, detachable, or permanent connection; a mechanical or electrical connection; a direct connection, an indirect connection through an intermediate medium, or communication within two elements. The specific meanings of the above terms in this application may be understood by those skilled in the art under certain circumstances.

[0037] The permanent magnet synchronous motors used in commercially available variable frequency drive refrigerator compressors typically utilize three-phase winding stacks. As shown in FIG. 8 and FIG. 9, the stator winding stacks on the stator core are evenly distributed around the central axis, forming a complete annular coil structure around the rotor. When designing the compressor cylinder seat, it is necessary to raise the cylinder seat relative to the stator core so that the stator winding stack does not end up higher than the stator core, which would increase the overall height of the compressor. For refrigerator manufacturers, increasing the compressor height means having to increase the size of the refrigerator body. If the overall volume of the refrigerator remains constant, the compressor can only be installed in place of part of the refrigeration and freezer compartments, which will limit the capacity of the refrigerator.

[0038] In order to solve the technical problems disclosed above, the embodiment examples of the present invention provide a stator assembly, a compressor motor 114, a compressor and a refrigerator.

[0039] As shown in FIG. 1, FIG. 2 and FIG. 3, in embodiment examples of the present invention, a stator assembly is provided, comprising a stator core 100 and stator winding packages 101, wherein the stator core 100 has a ring structure 102, a space inside the ring structure 102 is for installing a rotor 110, wherein a plurality of stator winding packages 101 are provided, the plurality of stator winding packages 101 are sequentially arranged in the circumferential direction of the ring structure 102 to form an arc portion, and a gap 103 of the winding packages is formed between two ends of the arc portion; The gap 103 of the winding packages is intended to accommodate the socket 104 of the compressor cylinder in such a way that the socket 104 of the compressor cylinder can be located near the end surface of the stator core 100 in the gap 103 of the winding packages.

[0040] It should be noted that the compressor cylinder socket 104 is located at the upper end of the stator core 100.

[0041] The stator winding packages 101 according to one embodiment of the present invention are sequentially arranged in the circumferential direction of the rotor 110. The arc portion of the stator winding packages 101 does not form a complete ring shape. The gap 103 of the winding packages is formed at a position corresponding to the compressor cylinder seat 104, which makes it possible to prevent the stator winding package 101 from blocking the compressor cylinder seat 104 when located near the stator core 100.

[0042] It should be noted that the compressor cylinder seat 104 forms a protrusion on the stator core 100 in the axial direction of the rotor 110, and the protrusion enters the gap 103 of the winding packages.

[0043] In the description of the gap 103 of the winding packages, the position of the gap 103 of the winding packages corresponds to the seat 104 of the compressor cylinder in the axial direction of the rotor 110. The size of the gap 103 of the winding packages is slightly larger than or equal to the size of the seat 104 of the compressor cylinder in the circumferential direction of the rotor 110. It should be noted that the stator assembly according to one embodiment of the present invention is essentially a structure of a certain part of the circumference of the rotor 110 in which stator coils are not provided, which prevents the seat 104 of the compressor cylinder and components such as the piston 116 and the connecting rod from being blocked by the stator winding packages 101 and makes it possible to arrange the seat 104 of the compressor cylinder as close as possible to the stator core 100.

[0044] As shown in FIG. 6 and FIG. 9 with respect to the number of stator winding packages 101, in the prior art, the stator core 100 typically comprises nine successively arranged stator winding packages 101. In one embodiment of the present invention, six successively arranged stator winding packages 101 can be arranged to form a gap 103 of the winding packages.

[0045] It should be noted that those skilled in the art can select the required number of stator winding packages 101 essentially without limitation.

[0046] A stator assembly proposed in one embodiment of the present invention comprises a stator core 100 and stator winding packages 101; the stator core 100 in this embodiment of the present invention has a ring structure 102, and the space inside the ring structure 102 is used to install the rotor 110. In one embodiment of the present invention, a plurality of stator winding packages 101 are provided, sequentially arranged in the circumferential direction of the ring structure 102 to form an arc section, and a gap 103 of the winding packages is formed between the two ends of the arc section.

[0047] In one embodiment of the present invention, the compressor cylinder seat 104 is located in the gap 103 of the winding packages, that is, the compressor cylinder seat 104 can be located near the end surface of the stator core 100 in the gap 103 of the winding packages.

[0048] It should be noted that the compressor cylinder seat 104 can directly contact the end surface of the stator core 100, which can minimize the height of the compressor cylinder seat 104. Of course, if necessary, a certain gap can be provided between the compressor cylinder seat 104 and the surface of the stator core 100. It should be noted that if the gap is smaller than the size of the portion of the stator winding package 101 protruding from the stator core 100, the height of the compressor can be reduced.

[0049] Unlike the prior art, the stator winding package 101 in one embodiment of the present invention is not located completely along the annular path around the rotor 110 to form a gap 103 of the winding packages, that is, the compressor cylinder seat 104 can be located as close as possible to the stator core 100, which makes it possible to eliminate the gap between the compressor cylinder seat 104 and the end surface of the stator core 100 and thereby reduce the size of the compressor in the axial direction of the rotor 110.

[0050] As shown in FIG. 4 and FIG. 5, in a further embodiment of the invention, the stator core 100 comprises a plurality of through slots 105 arranged at intervals in the circumferential direction of the rotor 110, wherein the through slots 105 extend in the axial direction of the annular structure 102, and the stator teeth 106 are formed between adjacent through slots 105; each of the stator winding packages 101 passes through two adjacent through slots 105 and is wound around the stator tooth 106.

[0051] It should be noted that the number of stator teeth 106 may exceed the number of stator winding packages 101. For example, nine stator teeth 106 and six stator winding packages 101 are provided, and the stator winding package gap 103 is formed at the position of three stator teeth 106 not covered by the stator winding packages 101.

[0052] Preferably, the number of stator teeth 106 corresponds to the number of stator winding packages 101.

[0053] For example, six stator winding packages 101 are respectively placed on six stator teeth 106. In this case, three stator winding packages 101 can be accommodated in the space in the gap 103 of the winding packages, but there are no stator winding packages 101. The circumference of the rotor 110 is 360 degrees. In this case, the central angle corresponding to one stator winding package 101 or one stator tooth 106 is 40 degrees, that is, the stator winding packages 101 are continuously arranged at 240 degrees in the circumferential direction, and the central angle corresponding to the gap 103 of the winding packages is 120 degrees.

[0054] For example, nine stator winding packages 101 are respectively placed on nine stator teeth 106. In this case, three stator winding packages 101 can be accommodated in the space in the gap 103 of the winding packages, but there are no stator winding packages 101. The circumference of the rotor 110 is 360 degrees. In this case, the central angle corresponding to one stator winding package 101 or one stator tooth 106 is 30 degrees, that is, the stator winding packages 101 are continuously arranged at 270 degrees in the circumferential direction, and the central angle corresponding to the gap 103 of the winding packages is 90 degrees.

[0055] As shown in FIG. 4 and FIG. 5, in an additional embodiment of the invention, the stator core 100 comprises a supporting platform 107 in the gap 103 of the winding packages; the supporting platform 107 comprises a working supporting surface 108 corresponding to the seat 104 of the compressor cylinder; and the working supporting surface 108 is perpendicular to the axial direction of the rotor 110.

[0056] Preferably, the embodiment example of the present invention allows the compressor cylinder seat 104 to be directly connected to the stator core 100 and to be in contact with it, that is, the compressor cylinder seat 104 will be lowered as much as possible.

[0057] In an additional embodiment, a safety groove 109 is provided on the side of the support platform 107 facing away from the rotor 110, the longitudinal direction of which corresponds to the axial direction of the rotor 110.

[0058] In addition, in one embodiment of the present invention, the safety groove 109 allows not only to arrange other elements, on the one hand, but also to reduce the weight of the stator core 100, on the other hand, which helps to lighten the structure.

[0059] As shown in FIG. 7, in one embodiment of the present invention, a compressor motor 114 is provided, comprising the stator assembly disclosed above, a compressor cylinder seat 104 and a rotor 110; the rotor 110 according to this embodiment of the present invention is installed inside the annular structure 102 of the stator assembly; the compressor cylinder seat 104 according to this embodiment of the present invention is located at one end of the stator assembly, and the compressor cylinder seat 104 is located near the end surface of the stator core 100 in the gap 103 of the winding packages.

[0060] In the compressor motor 114 proposed in one embodiment of the present invention, the stator assembly disclosed above is used, which makes it possible to arrange the compressor cylinder seat 104 as close as possible to the stator core 100, thereby eliminating the gap between the compressor cylinder seat 104 and the end surface of the stator core 100 and, further, reducing the size of the compressor in the axial direction of the rotor 110.

[0061] Next, as shown in FIG. 1 and FIG. 2, the compressor cylinder seat 104 includes first connecting portions 111; the stator core 100 includes second connecting portions 112, and the first connecting portion 111 and the second connecting portion 112 are connected by a fixing member.

[0062] A plurality of first connecting portions 111 are provided, arranged at intervals around the rotor axis 110; the number of second connecting portions 112 corresponds to the number of first connecting portions 111, and they are connected in one-to-one correspondence with each other.

[0063] It should be noted that four first connecting portions 111 may be provided, uniformly distributed at intervals in the circumferential direction of the rotor 110. A stable connection can be realized by the first connecting portions 111 and the second connecting portions 112.

[0064] As shown in FIG. 7, in one embodiment of the present invention, a compressor is provided that includes an outer protective shell 113 and a compressor motor 114 disclosed above, located inside the outer protective shell 113; a cylinder 115 located on a cylinder seat 104 of the compressor, a piston 116 located in the cylinder 115, and the piston 116 includes a crankshaft connecting rod 117 connected to a rotor 110. The rotor 110 initiates a reciprocating movement of the piston 116 in the cylinder 115 via the crankshaft connecting rod 117.

[0065] In an additional embodiment of the invention, two gaps 103 of the winding packages are provided, symmetrically located relative to the rotor 110, and two sockets 104 of the compressor cylinder, the installation positions of which fully correspond to the positions of the two gaps 103 of the winding packages.

[0066] Furthermore, in one embodiment of the present invention, two symmetrical gaps 103 of the winding packages are provided, and each gap 103 of the winding packages can correspond to one seat 104 of the compressor cylinder. It should be noted that each of the two seats 104 of the compressor cylinder contains a cylinder 115, forming a two-cylinder structure. Pistons 116 are provided in two cylinders 115, respectively, and a set of connecting rods 117 of the crankshaft connected to the rotor 110 is located on the pistons 116 to implement the connection (synchronous movement) of the two pistons 116. The presence of two cylinders 115 makes it possible to increase the working volume of the cylinder 115, which contributes to an increase in the power of the compressor.

[0067] In a compressor proposed in one embodiment of the present invention, the compressor motor 114 disclosed above is used, and the overall height of the compressor can be reduced so that the compressor does not occupy part of the refrigeration and freezing chambers, that is, the capacity of the refrigerator can be increased.

[0068] Furthermore, in one embodiment of the present invention, a refrigerator is further provided comprising the compressor disclosed above and a storage compartment for items.

[0069] A refrigerator according to one embodiment of the present invention comprises a compressor as described above. Compared to the prior art, the compressor described above is characterized by a small volume, which allows for an increase in the capacity of the refrigerator and freezer compartments.

[0070] The above relates only to preferred embodiments of the present invention and is not intended to limit the protected scope of the present invention. Those skilled in the art can modify and change the present invention in various ways. Any modification, equivalent replacement, improvement, etc., made within the spirit and principle of the present invention are within the protected scope of the present invention.

Claims

1. An assembled stator comprising a stator core (100) and stator winding packages (101), wherein the stator core (100) has an annular structure (102), and the space inside the annular structure (102) is configured to accommodate a rotor (110); the stator winding packages (101) are sequentially arranged in the circumferential direction of the annular structure (102) to form at least one arc section, wherein a gap (103) of winding packages is formed between two adjacent ends of at least one arc section; the gap (103) of the winding packages is configured to accommodate a seat (104) of the compressor cylinder in such a way that the seat (104) of the compressor cylinder is located near the end surface of the stator core (100) in the gap (103) of the winding packages.

2. The stator assembly according to claim 1, wherein the stator core (100) comprises through slots (105) arranged at intervals in the circumferential direction of the rotor (110), wherein the through slots (105) extend in the axial direction of the annular structure (102), and between each adjacent through slots (105) a stator tooth (106) is provided; and each of the stator winding packages (101) passes through two corresponding adjacent through slots (105) and is wound around the corresponding stator tooth (106).

3. The stator assembly according to item 2, in which the number of teeth (106) of the stator corresponds to the number of packages (101) of the stator winding.

4. The stator assembly according to claim 3, wherein the support platform (107) is provided in the gap (103) of the winding packages of the stator core (100); the support platform (107) has a working support surface (108) corresponding to the socket (104) of the compressor cylinder; and the working support surface (108) is perpendicular to the axial direction of the rotor (110).

5. The stator assembly according to item 4, in which a safety groove (109) is provided on the side of the support platform (107) facing away from the rotor (110), the longitudinal direction of which corresponds to the axial direction of the rotor (110).

6. A stator assembly according to any one of paragraphs 1-5, in which two gaps (103) of the winding packages are provided, located symmetrically relative to the rotor (110), and two compressor cylinder seats (104) are provided, the installation positions of which mutually correspond one-to-one to the positions of the two gaps (103) of the winding packages.

7. A compressor motor (114) comprising a stator assembly according to any one of claims 1-6, a compressor cylinder seat (104) and a rotor (110), in which the rotor (110) is mounted inside an annular structure (102) of the stator assembly, the compressor cylinder seat (104) is located at one end of the stator assembly, and the compressor cylinder seat (104) is located near the end surface of the stator core (100) in a gap (103) of the winding packages.

8. The compressor motor (114) according to claim 7, wherein the compressor cylinder seat (104) comprises at least one first connecting part (111); the stator core (100) comprises at least one second connecting part (112); and at least one first connecting part (111) and at least one second connecting part (112) are connected by means of at least one fixing element.

9. The compressor engine (114) according to claim 8, in which first connecting parts (111) are provided, arranged at intervals around the rotor axis (110); the number of second connecting parts (112) corresponds to the number of first connecting parts (111), and the second connecting parts and the first connecting parts are connected in a one-to-one correspondence with each other.

10. A compressor comprising an outer protective shell (113) and a compressor motor (114) according to any one of claims 7-9, located in the outer protective shell (113), in which a cylinder (115) is mounted on a seat (104) of the compressor cylinder, in the cylinder (115) a piston (116) is provided, comprising a connecting rod (117) of the crankshaft, connected to a rotor (110), and the rotor (110) is configured to initiate a reciprocating movement of the piston (116) in the cylinder (115) by means of the connecting rod (117) of the crankshaft.

11. A refrigerator comprising a compressor according to claim 10 and a compartment adapted to store items.

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