Refrigerator compressor and refrigeration device

Abstract

The application discloses a refrigerator compressor and refrigeration equipment, and relates to the technical field of refrigeration equipment, wherein the refrigerator compressor comprises a shell, a crankshaft and a crankcase, the crankshaft is used for being in transmission connection with a motor, the crankcase comprises a crankshaft support and a cylinder support which are connected, an axle hole, a first connecting part and a second connecting part are arranged on the crankshaft support, the first connecting part and the second connecting part are both connected to the shell, a piston hole is arranged on the cylinder support, the crankshaft is connected to the axle hole, and the axis of the piston hole is located below the upper surface of the crankshaft support; the technical scheme provided by the application reduces the overall height of the compressor.

Description

Technical Field

[0001] This invention relates to the technical field of refrigeration equipment, and particularly to a refrigerator compressor and refrigeration equipment. Background Technology

[0002] Currently, most refrigeration equipment such as refrigerators and freezers uses hermetic reciprocating compressors, which generally include a crankcase, crankshaft, connecting rod, and piston. In the traditional structure, the cylinder is located above the motor, which causes the crankcase's mounting hole for the crankshaft to protrude upwards, and the piston hole for the piston's reciprocating motion is also located above the motor, resulting in a relatively high overall height for the compressor. Summary of the Invention

[0003] The main objective of this invention is to provide a refrigerator compressor and refrigeration equipment that aims to reduce the overall height of the compressor.

[0004] To achieve the above objectives, the present invention provides a refrigerator compressor comprising:

[0005] case;

[0006] Crankshaft, the crankshaft being used for connection to an electric motor drive; and

[0007] A crankcase, comprising a crankshaft bracket and a cylinder bracket connected together, wherein the crankshaft bracket is provided with a shaft hole, a first connecting part and a second connecting part, both the first connecting part and the second connecting part being connected to the housing, the cylinder bracket is provided with a piston hole, the crankshaft being connected to the shaft hole, and the axis of the piston hole being located below the upper surface of the crankshaft bracket.

[0008] In one embodiment, the diameter of the piston bore is R, and the distance between the axis of the piston bore and the upper surface of the crankshaft support is s, where 0 < s < R / 2.

[0009] In one embodiment, the line extending from the crankshaft bracket to the cylinder bracket and passing through the shaft hole is the first axis. Both the first connecting portion and the second connecting portion are provided in multiples. The multiple first connecting portions are symmetrically arranged with respect to the first axis, and the multiple second connecting portions are symmetrically arranged with respect to the first axis.

[0010] In one embodiment, the distance between the two symmetrically arranged first connecting parts is h1, and the diameter of the piston hole is R, where 1.5R≤h1≤4R; the distance between the two symmetrically arranged second connecting parts is h2, and the diameter of the piston hole is R, where 1.5R≤h2≤4R; the distance between the first connecting part and its adjacent second connecting part is h3, and the diameter of the piston hole is R, where 1.5R≤h3≤4R.

[0011] In one embodiment, the crankcase has a first opening located between two symmetrically arranged first connecting portions; the crankcase has a second opening located between two symmetrically arranged second connecting portions; and the crankcase has a third opening located between the first connecting portion and its adjacent second connecting portion.

[0012] In one embodiment, the maximum opening width of the first opening is w1, 0.4h1≤w1≤0.8h1; and / or the maximum opening width of the second opening is w2, 0.4h2≤w2≤0.8h2; and / or the maximum opening width of the third opening is w3, 0.4h3≤w3≤0.8h3.

[0013] In one embodiment, the first opening is in the shape of any one of a circle, an ellipse, and a square; and / or the second opening is in the shape of any one of a circle, an ellipse, and a square; and / or the third opening is in the shape of any one of a circle, an ellipse, and a square.

[0014] In one embodiment, the length of the cylinder bracket along the first axis is h4, and the length of the piston hole along the first axis is h5, where h5≤h4≤2h5.

[0015] In one embodiment, the cylinder bracket has a fourth opening on the side facing the crankshaft bracket, and the fourth opening is connected to the second opening.

[0016] In one embodiment, the crankshaft bracket and the cylinder bracket are integrally formed.

[0017] The present invention also proposes a refrigeration device, including a refrigerator compressor as described above.

[0018] The refrigerator compressor in the technical solution of the present invention includes a housing, a crankshaft, and a crankcase. The crankshaft is used for transmission connection with a motor. The crankcase includes a crankshaft bracket and a cylinder bracket connected together. The crankshaft bracket is provided with a shaft hole, a first connecting part, and a second connecting part. Both the first connecting part and the second connecting part are connected to the housing. The cylinder bracket is provided with a piston hole. The crankshaft is connected to the shaft hole. The motor is transmission connected to the crankshaft, and then the crankshaft is transmission connected to one end of a connecting rod. The other end of the connecting rod reciprocates in the piston hole through a piston pin, compressing the refrigerant and discharging it from the cylinder. Therefore, the axis of the piston hole is located below the upper surface of the crankshaft bracket, that is, at least part of the piston hole is located below the crankshaft bracket. That is, the motor and cylinder structure are set horizontally. In this case, the shaft hole does not need to protrude upward or the upward protrusion of the shaft hole is reduced, thereby reducing the overall height of the compressor. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 A cross-sectional view of an embodiment of a refrigerator compressor provided by the present invention;

[0021] Figure 2 for Figure 1 Sectional view of the middle crankcase;

[0022] Figure 3 for Figure 1 Top view of the crankcase;

[0023] Figure 4 for Figure 1 Side view of the middle crankcase;

[0024] Figure 5 for Figure 1 Schematic diagram of the crankcase;

[0025] Figure 6 for Figure 1 A schematic diagram of the compressor in a refrigerator.

[0026] Explanation of icon numbers:

[0027] 10. Housing; 22. Crankshaft; 23. Connecting rod; 30. Crankcase; 31. Crankshaft bracket; 311. Shaft bore; 312. First connecting part; 313. Second connecting part; 314. First opening; 315. Second opening; 316. Third opening; 32. Cylinder bracket; 321. Piston bore; 322. Fourth opening.

[0028] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0030] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0031] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0032] Reference Figure 1 and Figure 2 This invention proposes a refrigerator compressor, comprising:

[0033] Casing 10;

[0034] Crankshaft 22, said crankshaft 22 being used for connection to an electric motor drive; and

[0035] The crankcase 30 includes a crankshaft bracket 31 and a cylinder bracket 32 ​​connected to each other. The crankshaft bracket 31 is provided with a shaft hole 311, a first connecting part 312 and a second connecting part 313. The first connecting part 312 and the second connecting part 313 are both connected to the housing 10. The cylinder bracket 32 ​​is provided with a piston hole 321. The crankshaft 22 is connected to the shaft hole 311. The axis of the piston hole 321 is located below the upper surface of the crankshaft bracket 31.

[0036] The refrigerator compressor in the technical solution of the present invention includes a housing 10, a crankshaft 22, and a crankcase 30. The crankshaft 22 is used for transmission connection with a motor. The crankcase 30 includes a crankshaft bracket 31 and a cylinder bracket 32 ​​connected together. The crankshaft bracket 31 is provided with a shaft hole 311, a first connecting part 312, and a second connecting part 313. The first connecting part 312 and the second connecting part 313 are both connected to the housing 10. The cylinder bracket 32 ​​is provided with a piston hole 321. The crankshaft 22 is connected to the shaft hole 311. The motor and the crankshaft 22 are connected to each other. 2. Transmission connection: The crankshaft 22 is then connected to one end of the connecting rod 23 via a transmission connection. The other end of the connecting rod 23 reciprocates within the piston bore 321 via a piston pin, compressing the refrigerant and discharging it from the cylinder. Therefore, the axis of the piston bore 321 is located below the upper surface of the crankshaft support 31, meaning at least part of the piston bore 321 is located below the crankshaft support 31. This means the motor and cylinder structure are horizontally aligned. Consequently, the shaft bore 311 does not need to protrude upwards, or the upward protrusion of the shaft bore 311 is reduced, thereby lowering the overall height of the compressor. The overall height of the compressor refers to the axial height of the motor.

[0037] Specifically, the diameter of the piston bore 321 is R, and the distance between the axis of the piston bore 321 and the upper surface of the crankshaft support 31 is s, where 0 < s < R / 2. One end of the connecting rod 23 is connected to the crankshaft 22, and the other end of the connecting rod 23 reciprocates within the piston bore 321 via a piston pin. Therefore, if s ≥ R / 2, the entire piston bore 321 is located below or flush with the upper surface of the crankshaft support 31. In this case, one end of the connecting rod 23 is completely above the crankshaft support 31, and the other end is completely below it. Consequently, the portion of the connecting rod 23 protruding from the crankshaft support 31 is not occupied by the cylinder support 32, leading to the cylinder support 32 occupying a significant portion of the space below the crankshaft support 31, thus increasing the overall height of the compressor. Therefore, by appropriately setting s within the range of 0 < s < R / 2, the overall height of the compressor is reduced.

[0038] In one embodiment, the line extending from the crankshaft bracket 31 to the cylinder bracket 32 ​​and passing through the shaft hole 311 is a first axis. Multiple first connecting portions 312 and multiple second connecting portions 313 are provided, with the multiple first connecting portions 312 and the multiple second connecting portions 313 symmetrically arranged with respect to the first axis. By spaced out multiple first connecting portions 312 and second connecting portions 313, the stability and reliability of the connection between the crankshaft bracket 31 and the housing 10 are increased.

[0039] Reference Figures 2 to 5Furthermore, the distance between the two symmetrically arranged first connecting parts 312 is h1, and the diameter of the piston hole 321 is R, where 1.5R ≤ h1 ≤ 4R; the distance between the two symmetrically arranged second connecting parts 313 is h2, and the diameter of the piston hole 321 is R, where 1.5R ≤ h2 ≤ 4R; the distance between the first connecting part 312 and its adjacent second connecting part 313 is h3, and the diameter of the piston hole 321 is R, where 1.5R ≤ h3 ≤ 4R. Understandably, if h1 > 4R and / or h2 > 4R and / or h3 > 4R, the crankcase 30 will occupy a larger space in the horizontal direction, thereby increasing the horizontal dimensions of the crankcase 30 and the compressor. If h1 < 1.5R and / or h2 < 1.5R and / or h3 < 1.5R, it indicates that the positions of the first connecting part 312 and the second connecting part 313 are too narrow, thereby increasing the installation difficulty of the motor and cylinder components, and also increasing the manufacturing precision of the motor and cylinder, thus increasing the overall manufacturing cost of the compressor. By reasonably setting the positions of the two first connecting parts 312 and the two second connecting parts 313, the installation and operation of the cylinder components, motor, and connecting rod 23 are facilitated.

[0040] Furthermore, the crankcase 30 is provided with a first opening 314, which is located between two symmetrically arranged first connecting parts 312; the crankcase 30 is provided with a second opening 315, which is located between two symmetrically arranged second connecting parts 313; the crankcase 30 is provided with a third opening 316, which is located between the first connecting part 312 and its adjacent second connecting part 313. By providing the first opening 314, the second opening 315, and the third opening 316, the material used in the crankshaft support 31 is reduced, thereby lowering the manufacturing cost of the crankshaft support 31. At the same time, providing the first opening 314, the second opening 315, and the third opening 316 also facilitates the arrangement of the compressor's exhaust silencer structure or other compressor components at these openings, thereby making the internal components of the compressor more compact and further reducing the overall size of the compressor.

[0041] Specifically, the maximum opening width of the first opening 314 is w1, where 0.4h1 ≤ w1 ≤ 0.8h1; and / or the maximum opening width of the second opening 315 is w2, where 0.4h2 ≤ w2 ≤ 0.8h2; and / or the maximum opening width of the third opening 316 is w3, where 0.4h3 ≤ w3 ≤ 0.8h3. By reasonably setting the sizes of the first opening 314, the second opening 315, and the third opening 316, the material usage of the crankshaft support 31 is reduced while the structural strength of the crankshaft support 31 is reasonably improved, thereby increasing the stability and reliability of the compressor during operation.

[0042] Specifically, the first opening 314 can be any one of a circle, an ellipse, and a square; and / or the second opening 315 can be any one of a circle, an ellipse, and a square; and / or the third opening 316 can be any one of a circle, an ellipse, and a square. Of course, the first opening 314 can also be configured as multiple consecutive broken line segments or multiple consecutive arc segments, or a combination of any number of straight line segments and any number of arc segments.

[0043] In one embodiment, the length of the cylinder support 32 along the first axis is h4, and the length of the piston bore 321 along the first axis is h5, where h5 ≤ h4 ≤ 2h5. Specifically, h4 ≥ h5 ensures that the piston bore 321 has sufficient space to accommodate the reciprocating motion of the piston, while preventing the cylinder support 32 from being too short along the piston bore 321 axis, thus guaranteeing structural stability and strength. h4 ≤ 2h5 limits excessive extension of the cylinder support 32 along the piston bore 321 axis, helping to maintain the compactness of the overall compressor structure and reduce floor space and weight.

[0044] Reference Figures 2 to 6 In one embodiment, the cylinder bracket 32 ​​has a fourth opening 322 on the side facing the crankshaft bracket 31, and the fourth opening 322 communicates with the second opening 315. Understandably, one end of the connecting rod 23 is driven by the crankshaft 22 and rotates, while the other end of the connecting rod 23 reciprocates within the piston hole 321 via a piston pin. Therefore, one end of the connecting rod 23 is located above the crankshaft bracket 31, and the other end of the connecting rod 23 extends into the piston hole 321. Since the piston hole 321 is partially located below the crankshaft bracket 31, the middle portion of the connecting rod 23 passes through the crankshaft bracket 31 and extends into the piston hole 321. The connecting rod 23 extends through the fourth opening 322 and / or the second opening 315. 5 passes through the crankshaft bracket 31. Therefore, by connecting the fourth opening 322 and the second opening 315, the range of motion of the connecting rod 23 is increased, thereby reducing the installation difficulty of the connecting rod 23 and simplifying the structural complexity of the connecting rod 23. Understandably, if the fourth opening 322 and the second opening 315 are small, the structure of the connecting rod 23 needs to be precisely set so that one end of the connecting rod 23 is connected to the crankshaft 22 for rotational motion, and the other end of the connecting rod 23 reciprocates in the piston hole 321 through the piston pin.

[0045] In the prior art, because the cylinder is located above the motor, the cylinder bracket 32 ​​is also located above the crankshaft bracket 31 and is a separate unit. The cylinder bracket 32 ​​is fixed to the crankshaft bracket 31 with screws. Therefore, during the movement of the motor, crankshaft 22, and connecting rod 23, the screw fastening points are prone to breakage, compromising reliability. In the technical solution of this application, the crankshaft bracket 31 and the cylinder bracket 32 ​​are integrally formed, thereby increasing the connection strength between the crankshaft bracket 31 and the cylinder bracket 32, thus increasing the stability and reliability of the compressor during operation and extending the compressor's service life. The integral forming can be injection molding, gradual integral forming, stamping integral forming, welding integral forming, etc.

[0046] The present invention also proposes a refrigeration device, which includes a refrigerator compressor. The specific structure of the refrigerator compressor is as described in the above embodiments. Since the refrigeration device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0047] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A refrigerator compressor, characterized in that, include: case; Crankshaft, the crankshaft being used for connection to an electric motor drive; and A crankcase, comprising a crankshaft bracket and a cylinder bracket connected together, wherein the crankshaft bracket is provided with a shaft hole, a first connecting part and a second connecting part, both the first connecting part and the second connecting part being connected to the housing, the cylinder bracket is provided with a piston hole, the crankshaft being connected to the shaft hole, and the axis of the piston hole being located below the upper surface of the crankshaft bracket.

2. The refrigerator compressor as described in claim 1, characterized in that, The diameter of the piston bore is R, and the distance between the axis of the piston bore and the upper surface of the crankshaft support is s, where 0 < s < R / 2.

3. The refrigerator compressor as described in claim 1, characterized in that, The line extending from the crankshaft bracket to the cylinder bracket and passing through the shaft hole is the first axis. Multiple first connecting parts and multiple second connecting parts are provided. Multiple first connecting parts are symmetrically arranged with the first axis, and multiple second connecting parts are symmetrically arranged with the first axis.

4. The refrigerator compressor as described in claim 3, characterized in that, The distance between the two symmetrically arranged first connecting parts is h1, and the diameter of the piston hole is R, where 1.5R≤h1≤4R; The distance between the two symmetrically arranged second connecting parts is h2, and the diameter of the piston hole is R, where 1.5R≤h2≤4R; The distance between the first connecting part and its adjacent second connecting part is h3, and the diameter of the piston hole is R, where 1.5R≤h3≤4R.

5. The refrigerator compressor as described in claim 4, characterized in that, The crankcase is provided with a first opening, which is located between two symmetrically arranged first connecting parts; The crankcase is provided with a second opening, which is located between two symmetrically arranged second connecting parts; The crankcase is provided with a third opening, which is located between the first connecting part and the adjacent second connecting part.

6. The refrigerator compressor as described in claim 5, characterized in that, The maximum opening width of the first opening is w1, 0.4h1≤w1≤0.8h1; and / or The maximum opening width of the second opening is w2, 0.4h2≤w2≤0.8h2; and / or The maximum opening width of the third opening is w3, where 0.4h3 ≤ w3 ≤ 0.8h3.

7. The refrigerator compressor as described in claim 5, characterized in that, The shape of the first opening is any one of circular, elliptical, and square; and / or The second opening may be in the shape of any one of a circle, an oval, or a square; and / or The third opening can be any one of the following shapes: circular, elliptical, or square.

8. The refrigerator compressor as described in claim 5, characterized in that, The length of the cylinder bracket along the first axis is h4, and the length of the piston hole along the first axis is h5, where h5≤h4≤2h5.

9. The refrigerator compressor as described in claim 8, characterized in that, The cylinder bracket has a fourth opening on the side facing the crankshaft bracket, and the fourth opening is connected to the second opening.

10. The refrigerator compressor as described in claim 1, characterized in that, The crankshaft bracket and the cylinder bracket are integrally formed.

11. A refrigeration device, characterized in that, Includes the refrigerator compressor as described in any one of claims 1 to 10.

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