Compressors and refrigerators

Abstract

The present invention provides a compressor and a refrigerator, belonging to the technical field of compressors. The compressor includes: a crankcase, a stator assembly and an assembly part. The stator assembly is located on one axial side of the crankcase, the assembly part is connected to the crankcase, the assembly part is sleeved on the stator assembly along the circumference of the stator assembly, and the stator assembly is fixedly connected to the assembly part, and the stator assembly is fixed to the crankcase through the assembly part. The assembly part uses the assembly part as an intermediate connecting component to achieve relative fixation of the stator assembly and the crankcase while preventing the stator assembly from deforming. In the case where the stator assembly has no mounting holes, the excess material area on the stator component for placing the mounting holes can be saved, the volume of the stator assembly can be reduced to a certain extent, the structure of the stator assembly can be reduced, and space can be saved, which is conducive to miniaturization of the compressor.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and in particular to a compressor and a refrigerator. Background Art

[0002] In a reciprocating compressor, the stator and the crankcase are fixedly assembled by screws, so a plurality of mounting holes need to be provided on the stator for the screws to pass through.

[0003] When mounting holes are provided on the stator, the spatial structure of the stator will be increased, and the space occupied by the stator in the compressor will be increased, thereby affecting the structure of the compressor. Moreover, the increase in the spatial structure of the stator will also lead to an increase in the cost of material use. Summary of the Invention

[0004] The present invention aims to solve the problem in the prior art or related art that when mounting holes are provided on a stator, the spatial structure of the stator will be enlarged.

[0005] In view of this, in a first aspect, the present invention proposes a compressor, comprising: a crankcase; a stator assembly, the stator assembly being located on one axial side of the crankcase; an assembly part connected to the crankcase, the assembly part being sleeved on the stator assembly along the circumference of the stator assembly, and the stator assembly being fixedly connected to the assembly part, and the stator assembly being fixed to the crankcase through the assembly part.

[0006] A portion of the crankshaft in the compressor can extend into the crankcase. The crankcase can support and protect the crankshaft, ensuring that the crankshaft can operate stably and protecting the crankshaft from external factors. The stator assembly can drive the crankshaft to rotate. After fixing the relative position of the stator assembly and the crankcase, it is ensured that the stator assembly can stably drive the crankshaft to rotate.

[0007] The assembly parts are sleeved around the outer periphery of the stator assembly and distributed along the circumference of the stator assembly. During the compressor assembly process, there is a risk of deformation of the stator assembly, which makes the compressor assembly difficult. In this solution, the assembly parts are sleeved around the stator assembly to prevent deformation of the stator assembly during installation, thereby facilitating the installation of the compressor.

[0008] The assembly part is also connected to the crankcase, and the stator assembly is fixedly connected to the assembly part. When the relative position of the assembly part and the crankcase is fixed, the relative position of the stator assembly and the crankcase is also fixed. In the scheme of directly locking the stator assembly to the crankcase in the related technology, it is necessary to set mounting holes on the stator assembly, so it is necessary to increase the structure of the stator assembly to prevent the locking component from affecting the core components inside the stator assembly. In this scheme, the assembly part is used to fix the crankcase, so there is no need to use a locking component to lock the stator assembly to the crankcase, and thus there is no need to open mounting holes on the stator assembly. In this scheme, full use is made of the assembly part that prevents the stator assembly from deforming. While preventing the stator assembly from deforming, the assembly part uses the assembly part as an intermediate connecting component to achieve relative fixation of the stator assembly and the crankcase. Therefore, there is no need for a separate fixing structure to install the stator assembly, which not only realizes the functional diversification of the assembly part, but also reduces the use of parts.

[0009] When the stator assembly lacks mounting holes, the excess material area on the stator component that would otherwise be used to accommodate the mounting holes can be saved. This can reduce the volume of the stator assembly to a certain extent, shrinking the stator assembly structure and saving space, thereby facilitating the miniaturization of the compressor. Furthermore, eliminating the excess mounting area can reduce the material cost of the stator assembly.

[0010] In some technical solutions, optionally, the assembly part is provided with a plurality of hollow holes along the circumference of the assembly part, the hollow holes penetrate the assembly part along the thickness direction of the assembly part, and the opening direction of the hollow holes faces the stator assembly.

[0011] A plurality of hollow holes are machined and formed on the assembly part, and the plurality of hollow holes are distributed along the circumference of the assembly part. The hollow holes penetrate the assembly part along the thickness direction of the assembly part. For example, the hollow holes are opened along the radial direction of the stator assembly, or the opening direction of the hollow holes is at an angle to the radial direction of the stator assembly.

[0012] The opening of the hollow hole faces the stator assembly. Therefore, the location where the hollow hole is provided in the assembly does not come into contact with the stator assembly, thereby reducing the contact area between the assembly and the stator assembly. It should be noted that in order for the assembly to stably prevent deformation of the stator assembly, the assembly must have sufficient axial dimensions. When there is a need to reduce the contact area between the assembly and the stator assembly, this requirement cannot be achieved simply by reducing the axial dimensions of the assembly. Therefore, in this solution, this requirement is achieved by providing a hollow hole in the assembly.

[0013] During the operation of the compressor, the stator assembly will vibrate. By reducing the contact area between the assembly and the stator assembly, the radial noise of the stator assembly can be reduced, thereby reducing the decibel level during the operation of the compressor.

[0014] In some technical solutions, optionally, along the axial direction of the stator assembly, the length of the stator assembly is greater than the length of the assembly, and both axial ends of the stator assembly extend out of the assembly.

[0015] When the axial length of the assembly part is too large, the contact area between the assembly part and the stator assembly is too large, thereby causing a large noise when the compressor is running.

[0016] In this solution, the axial length of the assembly is smaller than the axial length of the stator assembly, and both axial ends of the stator assembly extend out of the assembly. In the axial direction of the stator assembly, the assembly is centrally arranged, so that the stator assembly can be supported more stably and the increase in noise of the stator assembly due to the offset of the assembly is avoided.

[0017] In some technical solutions, optionally, the assembly includes: an annular sleeve, which is sleeved on the stator assembly, and the annular sleeve is provided with a notch along the circumference of the annular sleeve, and the notch penetrates the annular sleeve along the axial and radial directions of the stator assembly; a first plate, which is connected to the annular sleeve; a second plate, which is connected to the annular sleeve, and the first plate and the second plate are located on both sides of the notch along the circumference of the annular sleeve; and a connecting member, which connects the first plate and the second plate.

[0018] A notch is provided in the circumferential direction of the annular kit, so the annular kit is not a complete annular structure. A first plate and a second plate are provided on the annular kit, and the first plate and the second plate are provided on both sides of the notch. When a connecting member is used to connect the first plate and the second plate, as the connecting member is locked, the connecting member pulls the first plate and the second plate closer to each other, thereby reducing the width of the notch. The annular kit can be tightly fitted on the stator assembly, so that the annular kit can be stably clamped on the outer periphery of the stator assembly, thereby avoiding the problem of deformation of the stator assembly during the assembly process of the compressor.

[0019] In some technical solutions, optionally, the assembly part is a closed ring, and the assembly part is fixed to the stator assembly by shrink fitting or cold pressing.

[0020] In some technical solutions, optionally, a plurality of legs are provided on the side of the crankcase facing the stator assembly, and the plurality of legs are distributed at intervals along the circumference of the stator assembly. The stator assembly has an axis, and the side of the legs facing the axis fits the outer periphery of the assembly.

[0021] Taking the first side of the crankcase facing the stator assembly as an example, multiple legs are provided on the first side of the crankcase. The legs are spaced apart circumferentially around the stator assembly, and the interior space enclosed by the legs is defined as the installation space. When installing an assembly, a portion of the assembly extends into the installation space, and the outer periphery of the assembly fits against the inward-facing side of the legs. The legs can position the assembly. When the assembly extends into the installation space, the assembly is positioned and prevented from deviating from the installation position, thereby facilitating installation. Furthermore, the multiple legs can limit movement of the assembly, thereby ensuring installation stability.

[0022] In some technical solutions, optionally, the plurality of legs are interference fit with the assembly part; or the assembly part is welded and fixed to the legs.

[0023] The assembly parts can be assembled into the installation space by interference fit, that is, the assembly parts are tightly fitted on the inner side of the support legs. When the assembly parts are inserted into the installation space, the installation of the assembly parts is realized. There is no need to use additional structures to fix the assembly parts. This can not only simplify the internal structure of the compressor, but also improve the installation stability of the assembly parts.

[0024] Alternatively, when the assembly part is inserted into the installation space, the assembly part and the support leg are welded to ensure that the assembly part can be stably connected to the support leg, ensuring the installation stability of the assembly part, and further ensuring that the relative position of the stator assembly and the crankcase is not easily changed.

[0025] In some technical solutions, optionally, the support leg includes a first support portion and a second support portion, the first support portion and the second support portion are connected, and the first support portion and the second support portion are distributed along the axial direction of the stator assembly, the side of the first support portion facing the axis is in contact with the outer periphery of the assembly part, and the side of the second support portion facing the axis is in contact with the stator assembly.

[0026] A portion of the stator assembly extends out of the assembly part, and a portion of the stator assembly extending out of the assembly part is in contact with the support leg.

[0027] Specifically, the support leg in this solution includes a first support portion and a second support portion, the assembly part is fitted with the inner side of the first support portion, and the stator assembly is fitted with the inner side of the second support portion. Since the radial dimension of the stator assembly is smaller than the radial dimension of the assembly part, in order to enable the stator assembly to fit with the second support portion, it is necessary to set the first support portion and the second support portion to a stepped structure, and the minimum radial dimension of the second support portion is smaller than the minimum radial dimension of the first support portion, so that the stator assembly can fit on the inner side of the second support portion.

[0028] The second support portion can support the stator assembly, thereby preventing the stator assembly from shaking relative to the crankcase, further improving the installation stability of the stator assembly and the assembly, and ensuring that the relative position of the stator assembly and the crankcase is not easily changed.

[0029] In some technical solutions, optionally, the second support portion and the stator assembly are interference fit; or the stator assembly is welded and fixed to the second support portion.

[0030] The stator assembly can be assembled into the installation space by interference fit, that is, the stator assembly is tightly fitted on the inner side of the second support portion. When the stator assembly is inserted into the installation space, the second support portion stably limits the stator assembly, thereby improving the installation stability of the stator assembly.

[0031] Alternatively, when the stator assembly is inserted into the installation space, the stator assembly and the legs are welded to further connect the stator assembly to the crankcase, thereby further improving the installation stability of the stator assembly.

[0032] In some technical solutions, optionally, the assembly part and the stator assembly have an interference fit; or the assembly part and the stator assembly have a transition fit, and the assembly part is welded and fixed to the stator assembly.

[0033] The stator assembly can be inserted into the assembly by interference fit. In this case, no additional components are required to lock the stator assembly and the assembly, thereby reducing the use of parts. The interference fit method can also ensure that the stator assembly is stably installed in the assembly.

[0034] Alternatively, after the stator assembly is inserted into the assembly, the stator assembly and the assembly are connected by welding, thereby further improving the connection stability between the stator assembly and the assembly.

[0035] In a second aspect, the present invention provides a refrigerator comprising the compressor in the first aspect.

[0036] Additional aspects and advantages of the invention will become apparent from the description which follows, or may be learned by practice of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments with reference to the following drawings, in which:

[0038] Figure 1 A partial structural schematic diagram of a compressor in an embodiment of the present invention is shown;

[0039] Figure 2 It shows a schematic structural diagram of an assembly part in an embodiment of the present invention;

[0040] Figure 3 It shows a schematic structural diagram of an assembly part in an embodiment of the present invention;

[0041] Figure 4 FIG1 shows a schematic structural diagram of a stator assembly, an assembly part and a support leg in an embodiment of the present invention.

[0042] Reference numerals:

[0043] 100 compressor, 110 crankcase, 111 support leg, 112 housing, 113 first support portion, 114 second support portion, 120 stator assembly, 130 assembly part, 131 hollow hole, 132 annular kit, 133 notch, 134 first plate, 135 second plate, 136 connecting part, 137 limiting part. DETAILED DESCRIPTION

[0044] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments of the present application and the features therein can be combined with each other.

[0045] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0046] Refer to the following Figures 1 to 4 A compressor and a refrigerator provided according to some embodiments of the present invention are described.

[0047] Combine Figure 1 and Figure 2 As shown, in some embodiments of the present invention, a compressor 100 is proposed, which includes: a crankcase 110, a stator assembly 120 and an assembly 130, wherein the stator assembly 120 is located in the axial direction of the crankcase 110 ( Figure 1 The arrow at H in the figure points to one side, the assembly part 130 is connected to the crankcase 110, along the circumferential direction of the stator assembly 120 ( Figure 1 ), the assembly part 130 is sleeved on the stator assembly 120 , and the stator assembly 120 is fixedly connected to the assembly part 130 , and the stator assembly 120 is fixed to the crankcase 110 through the assembly part 130 .

[0048] A portion of the crankshaft in the compressor 100 can extend into the crankcase 110. The crankcase 110 can support and protect the crankshaft, ensuring that the crankshaft can operate stably and protecting the crankshaft from external factors. The stator assembly 120 can drive the crankshaft to rotate. After the relative position of the stator assembly 120 and the crankcase 110 is fixed, it is ensured that the stator assembly 120 can stably drive the crankshaft to rotate.

[0049] The assembly parts 130 are sleeved around the outer periphery of the stator assembly 120 and are distributed along the circumference of the stator assembly 120. During the assembly process of the compressor 100, there is a risk of deformation of the stator assembly 120, which makes the assembly of the compressor 100 somewhat difficult. In this solution, the assembly parts 130 are sleeved around the stator assembly 120 to prevent deformation of the stator assembly 120 during installation, thereby facilitating the installation of the compressor 100.

[0050] The assembly part 130 is also connected to the crankcase 110, and the stator assembly 120 and the assembly part 130 are fixedly connected. When the relative position of the assembly part 130 and the crankcase 110 is fixed, the relative position of the stator assembly 120 and the crankcase 110 is also fixed. In the related art solution of directly locking the stator assembly 120 to the crankcase 110, it is necessary to set mounting holes on the stator assembly 120, so it is necessary to increase the structure of the stator assembly 120 to prevent the locking part from affecting the core components inside the stator assembly 120. In this solution, the assembly part 130 is used to fix the crankcase 110, so there is no need to use a locking part to lock the stator assembly 120 to the crankcase 110, and thus there is no need to set mounting holes on the stator assembly 120. In this solution, the assembly part 130 is fully utilized to prevent the stator assembly 120 from being deformed. While preventing the stator assembly 120 from being deformed, the assembly part 130 is used as an intermediate connecting component to achieve relative fixation of the stator assembly 120 and the crankcase 110. Therefore, a separate fixing structure is not required to install the stator assembly 120, which not only achieves the functional diversification of the assembly part 130 but also reduces the use of parts.

[0051] When the stator assembly 120 lacks mounting holes, excess material area on the stator component that would otherwise be used to accommodate the mounting holes can be saved, which can reduce the volume of the stator assembly 120 to a certain extent, shrink the structure of the stator assembly 120, and save space, thereby facilitating miniaturization of the compressor 100. Furthermore, eliminating excess mounting area can also reduce the material cost of the stator assembly 120.

[0052] The outer diameter of the stator assembly 120 in this embodiment is a regular circle, and there are no screw mounting holes on the stator assembly 120 .

[0053] Combine Figure 1 and Figure 2 As shown, in some embodiments, optionally, along the circumference of the assembly 130 ( Figure 1 The arrow at C in the figure points to the direction of the arrow), the assembly part 130 is provided with a plurality of hollow holes 131, and the hollow holes 131 are along the thickness direction of the assembly part 130 ( Figure 2 The arrow pointing to W in the middle) passes through the assembly part 130, and the opening direction of the hollow hole 131 ( Figure 2 The arrow at D in FIG. 1 points toward the stator assembly 120 .

[0054] A plurality of hollow holes 131 are formed on the assembly part 130 , and the plurality of hollow holes 131 are distributed along the circumference of the assembly part 130 . The hollow holes 131 penetrate the assembly part 130 along the thickness direction of the assembly part 130 . For example, the hollow holes 131 are opened along the radial direction of the stator assembly 120 , or the opening direction of the hollow holes 131 is at an angle to the radial direction of the stator assembly 120 .

[0055] The opening direction of the hollow hole 131 faces the stator assembly 120. Therefore, the location where the hollow hole 131 is provided in the assembly member 130 does not come into contact with the stator assembly 120, thereby reducing the contact area between the assembly member 130 and the stator assembly 120. It should be noted that in order for the assembly member 130 to stably prevent deformation of the stator assembly 120, the assembly member 130 must have a sufficient axial dimension. When there is a need to reduce the contact area between the assembly member 130 and the stator assembly 120, this requirement cannot be achieved simply by reducing the axial dimension of the assembly member 130. Therefore, in this solution, this requirement is achieved by providing the hollow hole 131 in the assembly member 130.

[0056] During the operation of the compressor 100 , the stator assembly 120 will vibrate. By reducing the contact area between the assembly 130 and the stator assembly 120 , the radial noise of the stator assembly 120 can be reduced, thereby reducing the decibel level during the operation of the compressor 100 .

[0057] Combine Figure 1 and Figure 2 As shown, in some embodiments, optionally, along the axial direction of the stator assembly 120 ( Figure 1 ), the length of the stator assembly 120 is greater than the length of the assembly 130, and both axial ends of the stator assembly 120 extend out of the assembly 130.

[0058] When the axial length of the assembly part 130 is too large, the contact area between the assembly part 130 and the stator assembly 120 is too large, thereby causing a large noise to be generated during the operation of the compressor 100 .

[0059] In this solution, the axial length of the assembly 130 is smaller than the axial length of the stator assembly 120, and both axial ends of the stator assembly 120 extend out of the assembly 130. In the axial direction of the stator assembly 120, the assembly 130 is centrally arranged, so that the stator assembly 120 can be supported more stably and the increase in noise of the stator assembly 120 due to the offset of the assembly 130 is avoided.

[0060] In addition, extending the end of the stator assembly 120 out of the assembly part 130 also facilitates installation of other components at the axial end of the stator assembly 120 .

[0061] Combine Figure 1 、 Figure 2 and Figure 3 As shown, in some embodiments, optionally, the assembly 130 includes: an annular sleeve 132, a first plate 134, a second plate 135 and a connecting member 136. The annular sleeve 132 is sleeved on the stator assembly 120. Along the circumference of the annular sleeve 132, the annular sleeve 132 is provided with a notch 133. The notch 133 is along the axial and radial directions of the stator assembly 120 ( Figure 2 The arrow at R in the figure (the radial direction of assembly member 130 is the same as the radial direction of stator assembly 120) penetrates annular sleeve 132. A first plate 134 and a second plate 135 are both connected to annular sleeve 132. Along the circumference of annular sleeve 132, first plate 134 and second plate 135 are located on either side of notch 133. Connecting member 136 connects first plate 134 and second plate 135.

[0062] A notch 133 is provided in the circumferential direction of the annular sleeve 132, so the annular sleeve 132 is not a complete annular structure. A first plate 134 and a second plate 135 are provided on the annular sleeve 132, and the first plate 134 and the second plate 135 are provided on both sides of the notch 133. When the first plate 134 and the second plate 135 are connected using a connecting member 136, as the connecting member 136 is locked, the connecting member 136 pulls the first plate 134 and the second plate 135 closer to each other, thereby reducing the width of the notch 133. The annular sleeve 132 can be tightly fitted on the stator assembly 120, so that the annular sleeve 132 can be stably clamped on the outer periphery of the stator assembly 120, thereby avoiding the problem of deformation of the stator assembly 120 during the assembly process of the compressor 100.

[0063] The assembly part 130 in this embodiment can be a clamp, which is a circular structure with a notch 133. There are two parallel plates on the outside of the notch 133, with screw holes set on the plates. The connecting part 136 is a bolt, which locks and fixes the clamp and the stator assembly 120.

[0064] In a possible embodiment, the assembly part 130 also includes a limit member 137, which is sleeved on the connecting member 136 and is located between the first plate 134 and the second plate 135. When the connecting member 136 pulls the first plate 134 and the second plate 135 closer to each other, if the first plate 134 and the second plate 135 are too close, the annular sleeve 132 may cause damage to the stator assembly 120. If the first plate 134 and the second plate 135 are not pulled into place, the annular sleeve 132 will not be able to effectively prevent the stator assembly 120 from deformation. In this solution, a limit member 137 is provided between the first plate 134 and the second plate 135. When the assembly part 130 is installed, there is no need to worry about damaging the stator assembly 120. When the first plate 134 and the second plate 135 both contact the limit member 137, it indicates that the first plate 134 and the second plate 135 have been pulled into place, which can ensure that the annular sleeve 132 effectively prevents the stator assembly 120 from being deformed and avoids damage to the stator assembly 120.

[0065] The limiting member 137 can prevent the first plate 134 and the second plate 135 from being too close to each other, thereby preventing the annular sleeve 132 from crushing the stator assembly 120 .

[0066] In some technical solutions, optionally, the assembly part 130 is a closed ring, and the assembly part 130 is fixed to the stator assembly 120 by shrink fitting or cold pressing.

[0067] The assembly part 130 is a closed annular structure, that is, the assembly part 130 has no opening structure in the circumferential direction of the assembly part 130 , so that the assembly part 130 can be completely fitted on the stator assembly 120 along the circumferential direction, thereby ensuring the fixing stability of the stator assembly 120 .

[0068] The stator assembly 120 and the assembly 130 are interference-mounted by shrink fitting or cold pressing.

[0069] Combine Figure 1 and Figure 2 As shown, in some embodiments, optionally, a plurality of legs 111 are provided on the side of the crankcase 110 facing the stator assembly 120, and the plurality of legs 111 are distributed at intervals along the circumference of the stator assembly 120. The stator assembly 120 has an axis A, and the side of the legs 111 facing the axis A is in contact with the outer periphery of the assembly 130.

[0070] Taking the first side of the crankcase 110 facing the stator assembly 120 as an example, a plurality of legs 111 are provided on the first side of the crankcase 110. The legs 111 are spaced apart circumferentially around the stator assembly 120, and the interior space enclosed by the legs 111 is defined as the installation space. When installing the assembly 130, a portion of the assembly 130 extends into the installation space, and the outer periphery of the assembly 130 abuts against the inwardly facing side of the legs 111. The legs 111 can position the assembly 130. When the assembly 130 extends into the installation space, the assembly 130 is positioned and prevented from deviating from the installation position, thereby facilitating the installation of the assembly 130. Furthermore, the legs 111 can limit movement of the assembly 130, thereby ensuring the installation stability of the assembly 130.

[0071] The crankcase 110 further includes a case body 112 , and the legs 111 are disposed on the case body 112 .

[0072] In some embodiments, optionally, the plurality of legs 111 are interference-fitted with the assembly member 130 ; or the assembly member 130 is fixed to the legs 111 by welding.

[0073] The assembly part 130 can be assembled into the installation space by interference fit, that is, the assembly part 130 fits tightly against the inner side of the support leg 111. When the assembly part 130 is plugged into the installation space, the installation of the assembly part 130 is achieved. There is no need to use additional structure to fix the assembly part 130, which can not only simplify the internal structure of the compressor 100, but also improve the installation stability of the assembly part 130.

[0074] In this embodiment, the assembly member 130 and the crankcase 110 are assembled and fixed by multi-point interference fit.

[0075] Alternatively, when the assembly part 130 is inserted into the installation space, the assembly part 130 and the support leg 111 are welded to ensure that the assembly part 130 can be stably connected to the support leg 111, thereby ensuring the installation stability of the assembly part 130, and further ensuring that the relative position of the stator assembly 120 and the crankcase 110 is not easily changed.

[0076] The assembly part 130 is made of a weldable metal material, such as a steel plate, and the assembly part 130 and the crankcase 110 are fixedly connected by metal welding.

[0077] Combine Figure 1 、 Figure 2 and Figure 4As shown, in some embodiments, optionally, the support leg 111 includes a first support portion 113 and a second support portion 114, the first support portion 113 and the second support portion 114 are connected, and the first support portion 113 and the second support portion 114 are distributed along the axial direction of the stator assembly 120, the first support portion 113 is in contact with the outer periphery of the assembly 130 on the side facing the axis A, and the second support portion 114 is in contact with the stator assembly 120 on the side facing the axis A.

[0078] A portion of the stator assembly 120 extends out of the assembly part 130 , and a portion of the stator assembly 120 extending out of the assembly part 130 is in contact with the support leg 111 .

[0079] Specifically, the support leg 111 in this solution includes a first support portion 113 and a second support portion 114, the assembly part 130 is fitted with the inner side of the first support portion 113, and the stator assembly 120 is fitted with the inner side of the second support portion 114. Since the radial dimension of the stator assembly 120 is smaller than the radial dimension of the assembly part 130, in order to enable the stator assembly 120 to fit with the second support portion 114, it is necessary to set the first support portion 113 and the second support portion 114 to a stepped structure, and the minimum radial dimension of the second support portion 114 is smaller than the minimum radial dimension of the first support portion 113, so that the stator assembly 120 can fit on the inner side of the second support portion 114.

[0080] The second support portion 114 can support the stator assembly 120, thereby preventing the stator assembly 120 from shaking relative to the crankcase 110, further improving the installation stability of the stator assembly 120 and the assembly 130, and ensuring that the relative position of the stator assembly 120 and the crankcase 110 is not easily changed.

[0081] In some embodiments, optionally, the second support portion 114 and the stator assembly 120 are interference fit; or the stator assembly 120 is welded and fixed to the second support portion 114 .

[0082] The stator assembly 120 can be assembled into the installation space by interference fit, that is, the stator assembly 120 is tightly fitted on the inner side of the second support portion 114. When the stator assembly 120 is inserted into the installation space, the second support portion 114 stably limits the stator assembly 120, thereby improving the installation stability of the stator assembly 120.

[0083] Alternatively, when the stator assembly 120 is inserted into the installation space, the stator assembly 120 and the support legs 111 are welded to further connect the stator assembly 120 to the crankcase 110 , thereby further improving the installation stability of the stator assembly 120 .

[0084] In a possible embodiment, along the axial direction of the stator assembly 120 , the length of the leg 111 is L1, the length of the assembly part 130 is L2, and the length of the contact position between the assembly part 130 and the leg 111 is L3, L3<0.5×L1, and L3<0.5×L1.

[0085] When the assembly part 130 and the support leg 111 are assembled using an interference fit, if the length of the contact point between the assembly part 130 and the support leg 111 is too long, the support leg 111 may be excessively deformed, which may easily cause the support leg 111 to break or bend. Furthermore, if the length of the contact point between the assembly part 130 and the support leg 111 is too long, it may also make the installation of the assembly part 130 more difficult. In this solution, L3 is limited to 0.5×L1, and L3 is limited to 0.5×L1. Within the above range, the installation difficulty of the assembly part 130 can be reduced, damage to the support leg 111 can be avoided, and the support leg 111 can be stably connected to the assembly part 130.

[0086] In some embodiments, optionally, the assembly part 130 and the stator assembly 120 have an interference fit; or the assembly part 130 and the stator assembly 120 have a transition fit, and the assembly part 130 is welded and fixed to the stator assembly 120 .

[0087] The stator assembly 120 can be inserted into the assembly 130 by interference fit. At this time, no additional components are required to lock the stator assembly 120 and the assembly, thereby reducing the use of parts. The interference fit can also ensure that the stator assembly 120 is stably installed in the assembly 130.

[0088] Alternatively, after the stator assembly 120 is inserted into the assembly part 130 , the stator assembly 120 and the assembly part 130 are connected by welding, thereby further improving the connection stability between the stator assembly 120 and the assembly part 130 .

[0089] The stator assembly 120 and the assembly part 130 are installed by transition fit, and are fixed by local point or line welding.

[0090] In the above embodiment, the present invention discloses a circular stator assembly without a mounting hole and an outer jacket clamp for a reciprocating refrigerator compressor. The stator assembly 120 has no mounting holes and is fixed by an outer jacket metal clamp (assembly part 130). The assembly part 130 is fixed to the crankcase 110 by an interference fit or welding.

[0091] A reciprocating piston compressor employs the aforementioned stator assembly 120. The lack of mounting holes saves excess material area on the stator assembly 120 that would otherwise be used to accommodate the mounting holes, thus reducing the volume and structure of the stator assembly 120 to a certain extent. This space saving facilitates the miniaturization of the compressor 100. Eliminating excess mounting area also reduces the material cost of the stator assembly 120. The stator assembly 120 can be secured to the legs 111 of the crankcase 110 through an interference fit or welding, and the clamp structure prevents deformation of the stator component during installation, thus providing high practical value.

[0092] In an embodiment of the present invention, a refrigerator is proposed, which includes the compressor 100 in any of the above embodiments and can achieve the same technical effects, which will not be described in detail here.

[0093] The stator assembly 120 and the support legs 111 of the crankcase 110 are fixed by interference fit or welding. This design reduces the spatial structure of the stator components while avoiding material waste, reducing material costs, and expanding the spatial structure within the compressor 100. In this way, the structure of the compressor 100 can be designed to be more compact, which can indirectly increase the volume ratio of the refrigerator and better meet the current requirements of low cost and miniaturization of the compressor 100 and high volume of the refrigerator, and has high practical value.

[0094] In the present invention, the term "plurality" refers to two or more, unless otherwise specified. Terms such as "installed," "connected," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean fixed, removable, or integral; and "connected" can mean directly or indirectly through an intermediary. Those skilled in the art will understand the specific meanings of these terms in the present invention based on specific circumstances.

[0095] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0096] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A compressor, characterized in that: include: crankcase; a stator assembly, the stator assembly being located on one axial side of the crankcase; An assembly part is connected to the crankcase, and is sleeved on the stator assembly along the circumference of the stator assembly. The stator assembly is fixedly connected to the assembly part, and the stator assembly is fixed to the crankcase through the assembly part. The assembly part is provided with a plurality of hollow holes along the circumference of the assembly part, the hollow holes passing through the assembly part along the thickness direction of the assembly part, and the opening direction of the hollow holes faces the stator assembly; The plurality of hollow holes are distributed along the circumference of the assembly part; The hollow hole is opened along the radial direction of the stator assembly, or an opening direction of the hollow hole forms an angle with the radial direction of the stator assembly.

2. The compressor according to claim 1, characterized in that Along the axial direction of the stator assembly, the length of the stator assembly is greater than the length of the assembly part, and both axial ends of the stator assembly extend out of the assembly part.

3. The compressor according to claim 1 or 2, characterized in that The assembly includes: An annular sleeve, the annular sleeve being sleeved on the stator assembly, the annular sleeve being provided with a notch along the circumference of the annular sleeve, the notch penetrating the annular sleeve along the axial direction and the radial direction of the stator assembly; a first plate connected to the annular sleeve; a second plate connected to the annular sleeve, wherein the first plate and the second plate are located on both sides of the notch along the circumference of the annular sleeve; A connecting member connects the first plate member and the second plate member.

4. The compressor according to claim 1 or 2, characterized in that The assembly part is a closed circular ring, and the assembly part is fixed to the stator assembly by means of shrink fitting or cold pressing.

5. The compressor according to claim 1 or 2, characterized in that The crankcase is provided with a plurality of legs on a side facing the stator assembly. The plurality of legs are distributed at intervals along the circumference of the stator assembly. The stator assembly has an axis. The legs are fitted with the outer periphery of the assembly part on a side facing the axis.

6. The compressor according to claim 5, characterized in that A plurality of the legs are interference-fitted with the assembly member; or The assembly part is welded and fixed to the support leg.

7. The compressor according to claim 5, characterized in that The support leg includes a first supporting portion and a second supporting portion, the first supporting portion and the second supporting portion are connected, and the first supporting portion and the second supporting portion are distributed along the axial direction of the stator assembly, the first supporting portion is in contact with the outer periphery of the assembly part on the side facing the axis, and the second supporting portion is in contact with the stator assembly on the side facing the axis.

8. The compressor according to claim 7, characterized in that The second supporting portion is interference-fitted with the stator assembly; or The stator assembly is welded and fixed to the second supporting portion.

9. The compressor according to claim 1 or 2, characterized in that The assembly part is interference-fitted with the stator assembly; or The assembly part is transitionally matched with the stator assembly, and the assembly part is fixed to the stator assembly by welding.

10. A refrigerator, characterized in that: include: A compressor according to any one of claims 1 to 9.

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