Pump body assembly, piston compressor and refrigerator
By introducing a speed-increasing transmission mechanism into the pump body assembly, the problem of increasing the piston compression amount of the refrigerator piston compressor without increasing the motor speed is solved, and the effect of efficient cooling and reducing energy consumption in low-frequency state is achieved.
Patent Information
- Application Number
- CN202422220347.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-10
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-09-10
AI Technical Summary
In the prior art, refrigerator piston compressors need to increase the motor speed to increase the piston compression amount when a large cooling capacity is required, resulting in an increase in energy consumption.
The speed-enhancing transmission mechanism is introduced into the pump body assembly, and the speed of the eccentric part is increased through the speed-enhancing gear set, so that it can drive the piston to reciprocate back and forth in the compression cylinder for more round and back, increasing the piston compression amount.
When the motor speed remains unchanged, the piston compression amount is increased, the cooling capacity is increased, and the energy consumption is reduced, so as to achieve the cooling effect in the high-frequency state in the low-frequency state.
Smart Images
Figure CN223089474U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of piston compressors, and in particular relates to a pump body component, a piston compressor and a refrigerator. Background Art
[0002] The piston compressor in the refrigerator includes a rotating shaft, which is generally a crankshaft. When the rotating shaft is driven to rotate by the motor, the piston reciprocates in the compression cylinder through the transmission of the connecting rod, and completes the suction, compression and delivery of the refrigerant with the cooperation of the suction valve and the exhaust valve. The frequency of the reciprocating motion of the piston is consistent with the rotation frequency of the rotating shaft driven by the motor. When the refrigerator needs a larger cooling capacity, it is necessary to increase the speed of the motor to obtain more piston compression, thereby increasing energy consumption. Utility Model Content
[0003] Therefore, the utility model provides a pump assembly, a piston compressor and a refrigerator, and the main technical problem to be solved is: how to increase the piston compression amount without increasing the motor speed.
[0004] In order to solve the above problems, the utility model provides a pump body assembly, including a rotating shaft, a connecting rod, a piston and a compression cylinder, the pump body assembly also includes a speed-increasing transmission mechanism, the output end of the speed-increasing transmission mechanism is provided with an eccentric part, and the eccentric part is connected to the piston through the connecting rod;
[0005] The rotating shaft is connected to the input end of the speed increasing transmission mechanism, and the rotating shaft drives the eccentric part to rotate through the speed increasing transmission mechanism, so that the eccentric part drives the piston to reciprocate in the compression cylinder through the connecting rod.
[0006] In some embodiments, the speed increasing transmission mechanism is a speed increasing gear set.
[0007] In some embodiments, the speed increasing gear set has an output gear, which serves as the output end of the speed increasing transmission mechanism, and one axial end of the output gear is fixedly connected to the eccentric part, wherein the eccentric part is shaft-shaped, and the axis of the eccentric part is parallel to the axis of the output gear and is arranged at an interval.
[0008] In some embodiments, a connecting plate is fixed to one axial end of the output gear, and the eccentric portion is fixed to a side of the connecting plate that is away from the output gear.
[0009] In some embodiments, a balancing weight is detachably connected to the connecting plate.
[0010] In some embodiments, the speed increasing gear set has an input gear, which serves as the input end of the speed increasing transmission mechanism. The rotating shaft is circumferentially and fixedly connected to the input gear, and the axis of the rotating shaft coincides with the axis of the input gear.
[0011] In some embodiments, the rotating shaft is integrally formed on the input gear.
[0012] In some embodiments, when the speed increasing gear set has an output gear, the input gear is directly meshed with the output gear.
[0013] In some embodiments, the connecting rod has a big end and a small end. The connecting rod is sleeved on the eccentric part through the big end, so that the eccentric part can drive the connecting rod to move through the big end.
[0014] A piston pin is provided on the piston, and the piston pin is fixed on the piston through an elastic positioning pin. The connecting rod is sleeved on the piston pin through the small end, so that the small end can drive the piston to move through the piston pin.
[0015] The present utility model provides a piston compressor, which includes a motor and the pump body assembly described in any one of the above. Wherein, the motor is used to drive the rotating shaft to rotate.
[0016] The present utility model provides a refrigerator, which includes the piston compressor described above.
[0017] The pump body assembly, piston compressor and refrigerator provided by the present utility model have the following beneficial effects:
[0018] 1. Compared with the prior art, the pump body assembly of the present utility model adds a speed increasing transmission mechanism, which can increase the rotational speed of the eccentric part without changing the rotational speed of the motor, so that the eccentric part can drive the piston to reciprocate more times, thereby increasing the piston compression amount, improving the refrigerating capacity and energy efficiency.
[0019] 2. The technical solution of the present utility model can enable the compressor to obtain the same refrigerating capacity in the low-frequency state as in the high-frequency state, thereby reducing energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. The drawings in the following description are only exemplary, and those of ordinary skill in the art can also obtain other implementation drawings according to the provided drawings without creative efforts.
[0021] Figure 1It is a schematic structural diagram of a pump body assembly provided by an embodiment of the present utility model;
[0022] Figure 2 It is an assembly drawing of a pump body assembly provided by an embodiment of the present utility model;
[0023] Figure 3 It is a cross-sectional view of a pump body assembly provided by an embodiment of the present utility model;
[0024] Figure 4 It is a schematic diagram of the connection between an input gear and a rotating shaft provided by an embodiment of the present utility model;
[0025] Figure 5 It is a schematic diagram of an output gear connected to an eccentric part through a connecting plate provided by an embodiment of the present utility model.
[0026] The reference numerals are as follows:
[0027] 1. Compression cylinder; 2. Piston; 3. Piston pin; 4. Elastic positioning pin; 5. Connecting rod; 6. Input gear; 7. Balance weight; 8. Output gear; 9. Plain bearing assembly; 11. Cylinder hole; 12. First shaft hole; 13. Second shaft hole; 51. Big end; 52. Small end; 61. Rotating shaft; 81. Connecting plate; 82. Eccentric part; 83. Axle shaft. Detailed implementation manners
[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way limits the present utility model and its application or use. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0029] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, so it cannot be understood as a limitation on the protection scope of the present utility model; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.
[0030] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "upper" etc. can be used here to describe the spatial positional relationship of a device or feature shown in the figure with other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figure for the device. For example, if the device in the attached drawing is inverted, a device described as "above other devices or structures" or "over other devices or structures" will then be positioned as "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations are made for the spatial relative descriptions used here.
[0031] In addition, it should be noted that the use of terms such as "first", "second" etc. to define components is only for the convenience of differentiating the corresponding components. Without additional statements, the above terms have no special meanings, and thus should not be construed as limiting the protection scope of the present utility model.
[0032] Referring to Figures 1-5 As shown, according to an embodiment of the present utility model, a pump body assembly is provided, which includes a rotating shaft 61, a connecting rod 5, a piston 2 and a compression cylinder 1. The pump body assembly further includes a speed increasing transmission mechanism, and an eccentric part 82 is provided at the output end of the speed increasing transmission mechanism. The eccentric part 82 is connected to the piston 2 through the connecting rod 5. Among them, the rotating shaft 61 is connected to the input end of the speed increasing transmission mechanism. The rotating shaft 61 drives the eccentric part 82 to rotate through the speed increasing transmission mechanism, so that the eccentric part 82 drives the piston 2 to reciprocate in the compression cylinder 1 through the connecting rod 5.
[0033] It should be noted here that: the above rotating shaft 61 is driven to rotate by a motor.
[0034] Compared with the prior art, the pump body assembly of the present utility model adds a speed increasing transmission mechanism, which can increase the rotation speed of the eccentric part 82 when the motor speed remains unchanged, so that the eccentric part 82 drives the piston 2 to reciprocate more back and forth, thereby increasing the piston compression amount, improving the refrigerating capacity and improving the energy efficiency.
[0035] Among them, the technical solution of the present utility model can enable the compressor to obtain the same refrigerating capacity in the low-frequency state as in the high-frequency state, thereby reducing the energy consumption.
[0036] In some embodiments, the aforementioned speed increasing transmission mechanism can be a speed increasing gear set. Among them, the gear transmission of the gear set has the advantages of smoothness, accurate transmission ratio, reliable operation, compact structure, high efficiency, long service life, etc.
[0037] Such asFigure 3 and Figure 5 As shown in Figure 5 , the speed increasing gear set has an output gear 8, and the output gear 8 serves as the output end of the speed increasing transmission mechanism. One axial end of the output gear 8 is fixedly connected to an eccentric portion 82. Among them, the eccentric portion 82 is shaft-shaped, and the axis of the eccentric portion 82 is parallel to and spaced from the axis of the output gear 8.
[0038] In the above example, when the speed increasing gear set operates, the output gear 8 of the speed increasing gear set rotates and outputs power, and the output gear 8 drives the eccentric portion 82 to rotate together. Since the axis of the eccentric portion 82 is parallel to and spaced from the axis of the output gear 8, the cooperation between the eccentric portion 82 and the output gear 8 has the effect of a crank, so that the cooperation between the eccentric portion 82, the connecting rod 5 and the piston 2 can form a crank connecting rod mechanism, and when the eccentric portion 82 rotates, it can drive the piston 2 to reciprocate in the compression cylinder 1 through the connecting rod 5.
[0039] In some embodiments, as Figure 5 shown, a connecting plate 81 may be fixed to one axial end of the aforementioned output gear 8, and the connecting plate 81 may be integrally formed at one axial end of the output gear 8. The aforementioned eccentric portion 82 is fixed to the side of the connecting plate 81 facing away from the output gear 8 to avoid interference between the eccentric portion 82 and the output gear 8 and facilitate their respective installations.
[0040] In some embodiments, as Figures 1-3 shown, a balance weight 7 is detachably connected to the aforementioned connecting plate 81. The balance weight 7 can be detachably connected to the connecting plate 81 by screws. Among them, by providing the balance weight 7, it helps to balance the connecting plate 81.
[0041] In some embodiments, as Figure 1 and Figure 4 shown, the aforementioned speed increasing gear set has an input gear 6, and the input gear 6 serves as the input end of the speed increasing transmission mechanism. The aforementioned rotating shaft 61 is circumferentially fixedly connected to the input gear 6, and the axis of the rotating shaft 61 coincides with the axis of the input gear 6.
[0042] In the above example, the rotating shaft 61 can drive the input gear 6 to rotate to input power to the speed increasing gear set and make the speed increasing gear set operate.
[0043] In some embodiments, the aforementioned rotating shaft 61 is integrally formed on the input gear 6, so as to improve the connection stability between the rotating shaft 61 and the input gear 6.
[0044] In some embodiments, when the speed increasing gear set has an output gear 8, the input gear 6 is directly meshed with the output gear 8. In this example, the speed increasing gear set is composed of the input gear 6 and the output gear 8, and its structure is simple and convenient for assembly.
[0045] In some embodiments, as Figures 1-2 shown, the foregoing connecting rod 5 has a big end 51 and a small end 52. The connecting rod 5 is sleeved on the eccentric part 82 through the big end 51, so that the eccentric part 82 can drive the connecting rod 5 to move through the big end 51. Among them, the eccentric part 82 can be in a shaft shape, the big end 51 has a shaft hole, and the big end 51 is sleeved on the eccentric part 82 through the shaft hole. A piston pin 3 is provided on the piston 2, and the connecting rod 5 is sleeved on the piston pin 3 through the small end 52, so that the small end 52 can drive the piston 2 to move through the piston pin 3.
[0046] In the above example, when the eccentric part 82 is driven to rotate, it can drive the connecting rod 5 to move through the big end 51, and the connecting rod 5 drives the piston 2 to reciprocate in the compression cylinder 1 through the piston pin 3.
[0047] In some embodiments, as Figure 1 shown, the piston pin 3 can be fixed on the piston 2 through an elastic positioning pin 4, so that the piston pin 3 can remain relatively stable with the piston 2 and prevent the piston pin 3 from loosening from the piston 2.
[0048] As Figure 1 shown, the foregoing compression cylinder 1 has a cylinder block and a cylinder hole 11 provided on the cylinder block, and the foregoing piston 2 is used to reciprocate in the cylinder hole 11. The foregoing pump body assembly may further include a plain bearing assembly 9, and the plain bearing assembly 9 is used to provide support for the rotating shaft 61. Among them, a first shaft hole 12 and a second shaft hole 13 are provided on the cylinder block, and the rotating shaft 61 is rotationally matched with the first shaft hole 12. The wheel shaft 83 of the foregoing output gear is rotationally matched with the second shaft hole 13.
[0049] The number of teeth of the foregoing input gear 6 is Z1, the number of teeth of the output gear 8 is Z2, and the input gear 6 and the output gear 8 are meshed with each other to transmit power and motion.
[0050] The pump body assembly of the present utility model drives the rotating shaft 61 to rotate through a motor. The rotating shaft 61 drives the input gear 6 to rotate. The input gear 6 drives the output gear 8 to rotate. The eccentric part 82 on the output gear 8 makes the piston 2 reciprocate in the cylinder hole 11 through the connecting rod 5, so as to compress the refrigerant gas. When the input gear 6 of the pump body assembly rotates one week, the output gear 8 can rotate Z1 / Z2 weeks. Compared with a conventional pump body assembly, at the same motor frequency, when the rotating shaft 61 rotates one circle, the eccentric part 82 of the pump body assembly of the present utility model can rotate (Z1 / Z2 - 1) more weeks, and the piston 2 can move (Z1 / Z2 - 1) more back and forth, so that more gas compression amount can be obtained.
[0051] Among them, by adding a speed increasing transmission mechanism to the pump body assembly of the present utility model, the compressor can obtain more piston compression at low rotational speeds, while improving the refrigeration energy efficiency. With the increasing demand for high-speed compressors currently, the pump body assembly of the present utility model can achieve good adaptability and development prospects.
[0052] The present utility model also provides a piston compressor, which may include a motor and the pump body assembly of any one of the above. The motor is used to drive the rotation of the above-mentioned rotating shaft 61. Among them, due to the adoption of the above-mentioned pump body assembly in the piston compressor, compared with the prior art, the pump body assembly of the present utility model adds a speed increasing transmission mechanism, which can increase the rotational speed of the eccentric part 82 when the rotational speed of the motor remains unchanged, so that the eccentric part 82 drives the piston 2 to reciprocate more back and forth, thereby increasing the piston compression and improving the energy efficiency of the compressor.
[0053] Among them, the piston compressor has a motor, and the motor is used to drive the rotation of the rotating shaft 61.
[0054] The present utility model also provides a refrigerator, which includes the above-mentioned piston compressor. Among them, due to the adoption of the above-mentioned piston compressor in the refrigerator, compared with the prior art, the pump body assembly of the present utility model adds a speed increasing transmission mechanism, which can increase the rotational speed of the eccentric part 82 when the rotational speed of the motor remains unchanged, so that the eccentric part 82 drives the piston 2 to reciprocate more back and forth, thereby increasing the piston compression and improving the energy efficiency of the compressor.
[0055] It is easy for those skilled in the art to understand that, on the premise of no conflict, the advantageous technical features of the above-mentioned various methods can be freely combined and superimposed.
[0056] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model. The above is only the preferred implementation manner of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the technical principle of the present utility model, several improvements and variations can still be made, and these improvements and variations should also be regarded as the protection scope of the present utility model.
Claims
1. A pump body assembly, comprising a rotating shaft (61), a connecting rod (5), a piston (2) and a compression cylinder (1), characterized in that: The pump body assembly further comprises a speed-increasing transmission mechanism, wherein an eccentric portion (82) is provided at an output end of the speed-increasing transmission mechanism, and the eccentric portion (82) is connected to the piston (2) via the connecting rod (5); The rotating shaft (61) is connected to the input end of the speed-increasing transmission mechanism, and the rotating shaft (61) drives the eccentric part (82) to rotate through the speed-increasing transmission mechanism, so that the eccentric part (82) drives the piston (2) to reciprocate in the compression cylinder (1) through the connecting rod (5).
2. The pump assembly according to claim 1, characterized in that: The speed increasing transmission mechanism is a speed increasing gear set.
3. The pump assembly according to claim 2, characterized in that: The speed increasing gear set comprises an output gear (8), and the output gear (8) serves as the output end of the speed increasing transmission mechanism. One axial end of the output gear (8) is fixedly connected to the eccentric part (82), wherein the eccentric part (82) is in the shape of an axis, and the axis of the eccentric part (82) is parallel to the axis of the output gear (8) and is arranged at an interval.
4. The pump assembly according to claim 3, characterized in that: A connecting plate (81) is fixed to one axial end of the output gear (8), and the eccentric portion (82) is fixed to a side of the connecting plate (81) that is away from the output gear (8).
5. The pump assembly according to claim 4, characterized in that: The connecting plate (81) is detachably connected to a balancing weight (7).
6. The pump assembly according to any one of claims 2 to 5, characterized in that: The speed-increasing gear set comprises an input gear (6), the input gear (6) serving as the input end of the speed-increasing transmission mechanism, the rotating shaft (61) being circumferentially fixedly connected to the input gear (6), and the axis of the rotating shaft (61) coincides with the axis of the input gear (6).
7. The pump assembly according to claim 6, characterized in that: When the speed increasing gear set has an output gear (8), the input gear (6) directly meshes with the output gear (8).
8. The pump assembly according to any one of claims 1 to 5 and 7, characterized in that: The connecting rod (5) has a large head end (51) and a small head end (52), and the connecting rod (5) is sleeved on the eccentric portion (82) through the large head end (51), so that the eccentric portion (82) can drive the connecting rod (5) to move through the large head end (51); The piston (2) is provided with a piston pin (3), and the piston pin (3) is fixed to the piston (2) via an elastic positioning pin (4); the connecting rod (5) is sleeved on the piston pin (3) via the small head end (52), so that the small head end (52) can drive the piston (2) to move via the piston pin (3).
9. A piston compressor, characterized in that: It comprises a motor and a pump body assembly according to any one of claims 1 to 8; wherein the motor is used to drive the rotating shaft (61) to rotate.
10. A refrigerator, characterized in that: Includes the piston compressor as described in claim 9.