CN212838234U

CN212838234U - Small-size frequency conversion refrigerator compressor

Info

Publication number: CN212838234U
Application number: CN202020908293.4U
Authority: CN
Inventors: 杨晋
Original assignee: Sichuan Danfu Environmental Technology Co ltd
Current assignee: Sichuan Danfu Environmental Technology Co ltd
Priority date: 2020-05-26
Filing date: 2020-05-26
Publication date: 2021-03-30
Anticipated expiration: 2030-05-26

Abstract

The utility model discloses a small-size frequency conversion refrigerator compressor, including casing, compression subassembly, motor and air valve subassembly pass through the pedestal mounting in the casing, damping spring and casing fixed connection are passed through to the support bottom, the rotation axis power that the compression subassembly passes through bent axle and motor is connected, the air valve subassembly passes through the pipeline and is connected with the compression subassembly, the lower part at the casing is installed to the motor, the motor electricity is connected with draws forth the socket, it installs at the casing lateral wall to draw forth the socket, it is less than the position of motor to draw forth the position of socket on the lateral wall. The compressor has a simple structure, adopts a compact design, installs the motor at the lower part of the shell, lowers the gravity center of the whole compressor, effectively reduces the deflection of the rotating shaft of the motor during operation and the vibration and noise caused by the deflection, and reduces the vibration at low rotating speed and the noise at high rotating speed.

Description

Small-size frequency conversion refrigerator compressor

Technical Field

The utility model relates to a compressor technical field especially relates to a small-size frequency conversion refrigerator compressor.

Background

The compressor is an indispensable component in the refrigerator, and the existing refrigerator compressor mainly comprises a fixed-frequency piston compressor and a variable-frequency piston compressor. Wherein the fixed-frequency small-sized piston compressor adopts a centrifugal pump oil mechanism, and the oil feeding amount is stable and can not change due to certain rotating speed, and the noise and vibration change can not be large.

However, for the frequency-conversion reciprocating piston compressor, the oiling amount is constantly changed due to the change of the rotating speed, and the oiling is reduced at a low rotating speed, so that the piston and the cylinder are lubricated badly, and the abrasion is caused. Meanwhile, the compressor vibrates greatly at a low rotating speed, the problem of high noise exists when the rotating speed is high, and meanwhile, the frequency conversion compressor is high in cost relative to a fixed frequency at present and is blocked in popularization. Therefore, the technical problem to be solved urgently by the technical personnel in the field is to design a small fixed-frequency refrigerator compressor with small low-rotation-speed vibration and high-rotation-speed noise.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a small-size frequency conversion refrigerator compressor, the fine above-mentioned problem of having solved, its simple structure has adopted compact design, installs the motor in the lower part of casing, has reduced the focus of whole compressor, and effectual beat and the vibration and the noise that the beat caused when having reduced the motor axis of rotation operation, the noise when vibration and high rotational speed when having reduced the low rotational speed.

The technical scheme of the utility model a small-size frequency conversion refrigerator compressor, including casing, compression subassembly, motor and air valve subassembly pass through the pedestal mounting in the casing, damping spring and casing fixed connection are passed through to the support bottom, the rotation axis power that the compression subassembly passes through bent axle and motor is connected, air valve subassembly passes through the pipeline and is connected with the compression subassembly, the lower part at the casing is installed to the motor, the motor electricity is connected with draws forth the socket, it installs at the casing lateral wall to draw forth the socket, draw forth the position of socket on the lateral wall and be less than the position of motor.

Furthermore, the compression assembly comprises a connecting rod, a piston and a cylinder body which are connected in sequence, one end of the crankshaft is connected with the rotating shaft of the motor, and the other end of the crankshaft is connected with the connecting rod.

Furthermore, the air valve assembly comprises a valve plate and an air suction and exhaust valve which are connected with the cylinder body, and the air suction and exhaust valve is connected with a silencing bag through a pipeline.

Furthermore, the device also comprises a bottom plate, and the bottom plate is welded and fixed with the bottom of the shell.

Furthermore, a bolt fixing hole is formed in the bottom plate.

Further, still include the oil pump that provides the lubrication for the compression subassembly, the oil pump includes oil pump cover and sets up the oil pump axle in the oil pump cover.

Furthermore, the oil pump sleeve adopts steel stamping parts, the diameter of the oil pump sleeve is 11mm, and the oil pump sleeve is in pressure joint in the crankshaft hole.

Further, the motor is a 9-slot 6-level rotor motor, the thickness of the motor is 25mm, a base connected with the shell is arranged at one end of the cylinder body, and the axial height of the base is 15 mm.

Further, the axial length of the crankshaft is 54 mm.

Further, the shell comprises a lower shell and an upper cover arranged on the lower shell, and the height of the shell is 128 mm.

The utility model has the advantages that:

1. the utility model adopts the compact design, the motor is arranged at the lower part of the shell, the gravity center of the whole compressor is reduced, the deflection and the vibration and noise caused by the deflection when the rotating shaft of the motor runs are effectively reduced, and the vibration at low rotating speed and the noise at high rotating speed are reduced;

2. the support and the shell are connected by the damping spring, so that the vibration caused by the motor is further reduced, and the normal operation of the compressor is ensured;

3. the utility model discloses still through the focus that reduces the compressor, the oil that oils of oil pump when being favorable to the low-speed that can make the compressor height descend guarantees the abundant lubrication of each moving part, also is favorable to the compressor miniaturization.

Drawings

Fig. 1 is a schematic sectional structure of the present invention;

fig. 2 is a top view of the internal structure of the present invention;

FIG. 3 is an exploded view of the structure of the present invention;

fig. 4 is a schematic perspective view of the present invention;

FIG. 5 is a schematic structural view of the cylinder body of the present invention;

fig. 6 is a schematic structural view of the oil pump set of the present invention, wherein fig. 6-1 is a cross-sectional view of the oil pump set, fig. 6-2 is a top view of the oil pump set, and fig. 6-3 is a partially enlarged structural view at the point I of fig. 6-1;

in the figure: 1. a lower case; 2. an upper cover; 3. a motor; 4. a support; 5. a damping spring; 6. a crankshaft; 7. leading out the socket; 8. a connecting rod; 9. a piston; 10. a cylinder body; 11. a valve plate; 12. a suction/exhaust valve; 13. a sound-deadening bag; 14. a base plate; 15. a bolt fixing hole; 16. an oil pump sleeve; 17. an oil pump shaft; 18. a machine base.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the utility model is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 6, the utility model provides a small-size frequency conversion refrigerator compressor, including casing, compression subassembly, motor 3 and air valve subassembly pass through support 4 and install in the casing, damping spring 5 and casing fixed connection are passed through to support 4 bottom, the rotation axis power that compression subassembly passes through bent axle 6 and motor 3 is connected, air valve subassembly passes through the pipeline and is connected with compression subassembly, motor 3 installs the lower part at the casing, motor 3 electricity is connected with draws forth socket 7, draw forth socket 7 and install at the casing lateral wall, draw forth socket 7 and be less than motor 3's position on the lateral wall.

The utility model adopts the compact design, the motor 3 is arranged at the lower part of the shell, the gravity center of the whole compressor is reduced, the deflection and the vibration and noise caused by the deflection when the rotating shaft of the motor 3 runs are effectively reduced, and the vibration at low rotating speed and the noise at high rotating speed are reduced; the support 4 is connected with the shell through the damping spring 5, so that vibration caused by the motor 3 is further reduced, and normal operation of the compressor is guaranteed. The position of the outlet socket 7 on the side wall is lower than that of the motor 3, which is beneficial to fixing and mounting the motor 3.

The compression assembly comprises a connecting rod 8, a piston 9 and a cylinder body 10 which are connected in sequence, one end of the crankshaft 6 is connected with the rotating shaft of the motor 3, and the other end of the crankshaft is connected with the connecting rod 8. I.e. the power conversion between the motor 3 and the compression assembly is effected by means of the crankshaft 6.

Preferably, the motor 3 is a 9-slot 6-level rotor motor 3, the thickness of the motor 3 is 25mm, one end of the cylinder body 10 is provided with a base 18 connected with the shell, and the axial height of the base 18 is 15 mm. The axial length of the crankshaft 6 is 54 mm. The thickness of the motor 3, the axial height of the base and the axial length of the crankshaft 6 are optimized and reduced, so that the gravity center of the whole compressor is reduced, and the deflection and the vibration and noise caused by the deflection during the operation of the rotating shaft can be effectively reduced.

The air valve assembly comprises a valve plate 11 and an air suction and exhaust valve 12 which are connected with the cylinder body 10, and the air suction and exhaust valve 12 is connected with a silencing bag 13 through a pipeline. The use of the silencing bag 13 is beneficial to reducing the noise of the air inlet and the air outlet. The sound-deadening bag 13 may be a suction plastic muffler.

The bottom of the compressor shell further comprises a bottom plate 14, and the bottom plate 14 is fixed with the bottom of the shell in a welding mode. The bottom plate 14 is provided with bolt fixing holes 15. The bottom plate 14 is directly welded with the shell, so that the connection stability is ensured, unnecessary part connection is eliminated, and the height of the whole compressor is reduced.

The compressor interior also includes an oil pump for providing lubrication to the compression assembly, the oil pump including an oil pump housing 16 and an oil pump shaft 17 disposed within the oil pump housing 16. The utility model discloses still through the focus that reduces the compressor, the oil that oils of oil pump when being favorable to the low-speed that can make the compressor height descend guarantees the abundant lubrication of each moving part, also is favorable to the compressor miniaturization.

The oil pump sleeve 16 is made of steel stamping parts, the diameter of the oil pump sleeve 16 is 11mm, and the oil pump sleeve 16 is in press connection with a hole of the crankshaft 6. The oil pump sleeve 16 is of a tubular structure, is simple in structure, is pressed in the hole of the crankshaft 6, is convenient to install, improves reliability, solves the problem that the oil pump sleeve 16 made of the existing plastic part is easy to break and fall off, and is beneficial to reducing the cost of the compressor.

Preferably, the housing comprises a lower shell 1 and an upper cover 2 arranged on the lower shell 1, the height of the housing is 128mm, and the weight of the whole compressor can be reduced to 4.6 kg.

The motor 3 is also connected with a controller, and the controller is arranged on the side surface of the shell through a fixing clamp. The controller is an existing conventional controller.

The utility model discloses a frequency conversion refrigerator compressor has improved overall structure's compactedness, motor 3 is located the lower part of casing, make frame 18, motor 3's axial height is lower, the focus of whole compressor has also been reduced, thereby can effectively reduce beat and the vibration and the noise that the beat caused when motor 3 axis of rotation moves, the volume and the weight of compressor have been reduced, the bad wearing and tearing of oiling have been reduced, vibration when having reduced low rotational speed and noise when high rotational speed, for frequency conversion refrigerator compressor's miniaturization must realize.

Of course, the present invention may have other embodiments, and those skilled in the art may make various corresponding changes and modifications according to the present invention without departing from the spirit and the essence of the present invention, and these corresponding changes and modifications should fall within the protection scope of the appended claims.

Claims

1. A small-size inverter refrigerator compressor which characterized in that: including casing, compression assembly, motor (3) and air valve subassembly pass through support (4) and install in the casing, damping spring (5) and casing fixed connection are passed through to support (4) bottom, the rotation axis power that compression assembly passes through bent axle (6) and motor (3) is connected, air valve subassembly passes through the pipeline and is connected with compression assembly, the lower part at the casing is installed in motor (3), motor (3) electricity is connected with draws socket (7), draw socket (7) and install at the casing lateral wall, draw socket (7) the position on the lateral wall and be less than the position of motor (3).

2. The small-sized inverter refrigerator compressor of claim 1, wherein: the compression assembly comprises a connecting rod (8), a piston (9) and a cylinder body (10) which are connected in sequence, one end of the crankshaft (6) is connected with a rotating shaft of the motor (3), and the other end of the crankshaft is connected with the connecting rod (8).

3. The small-sized inverter refrigerator compressor of claim 1, wherein: the air valve assembly comprises a valve plate (11) and an air suction and exhaust valve (12) which are connected with a cylinder body (10), and the air suction and exhaust valve (12) is connected with a silencing bag (13) through a pipeline.

4. The small-sized inverter refrigerator compressor of claim 1, wherein: the shell is characterized by further comprising a bottom plate (14), wherein the bottom plate (14) is fixedly welded with the bottom of the shell.

5. The small-sized inverter refrigerator compressor of claim 4, wherein: and the bottom plate (14) is provided with a bolt fixing hole (15).

6. The small-sized inverter refrigerator compressor of claim 1, wherein: the compressor further comprises an oil pump for providing lubrication for the compression assembly, wherein the oil pump comprises an oil pump sleeve (16) and an oil pump shaft (17) arranged in the oil pump sleeve (16).

7. The small-sized inverter refrigerator compressor of claim 6, wherein: the oil pump sleeve (16) adopts steel stamping parts, the diameter of the oil pump sleeve (16) is 11mm, and the oil pump sleeve (16) is pressed in a hole of the crankshaft (6).

8. The small-sized inverter refrigerator compressor of claim 2, wherein: the motor (3) is a 9-slot 6-level rotor motor (3), the thickness of the motor (3) is 25mm, one end of the cylinder body (10) is provided with a machine base (18) connected with the shell, and the axial height of the machine base (18) is 15 mm.

9. The small-sized inverter refrigerator compressor of claim 1, wherein: the axial length of the crankshaft (6) is 54 mm.

10. The small-sized inverter refrigerator compressor of claim 1, wherein: the casing includes inferior valve (1) and upper cover (2) of setting on inferior valve (1), the height of casing is 128 mm.