Connecting structure of compressor cylinder seat and motor

Abstract

The utility model discloses a connecting structure of a compressor cylinder seat and a motor, which comprises the cylinder seat, the cylinder seat comprises a cylinder head part and a mounting platform part, the mounting platform part is connected with the middle part of the cylinder head part in the height direction, a piston hole is arranged on the cylinder head part, a piston is movably arranged in the piston hole, and the motor is arranged on the mounting platform part. A mounting groove for mounting an eccentric part of a crankshaft is formed in the middle of the mounting platform part, a sinking table is arranged on the bottom side of the mounting platform part, the crankshaft is rotationally connected to the middle of the sinking table, a connecting rod is movably arranged between the piston and the crankshaft, and a motor is arranged on the bottom surface of the mounting platform part; a stator winding of the motor is arranged along a ring with a notch, and the position of the notch corresponds to the position of the bottom of the cylinder head part; the utility model has the advantages of small volume and stable operation.

Description

TECHNICAL FIELD

[0001] The utility model belongs to compressor technical field, and specifically relates to a connecting structure of compressor cylinder seat and motor. BACKGROUND

[0002] The piston compressor is a kind of compressor that makes gas pressurization and delivery by the reciprocating motion of piston, belongs to volumetric compressor, also called reciprocating piston compressor or reciprocating compressor.

[0003] The existing mass production compressor pump body is mainly composed of cylinder seat, crankshaft assembly, piston, connecting rod, piston pin, motor and suction silencer cavity.Piston is driven by connecting rod to make reciprocating motion in cylinder, cylinder refers to the part used for the cooperation of piston and cylinder hole, transmission component is used to realize reciprocating motion, and crankshaft connecting rod mechanism is most commonly used.The pump body structure of the existing piston compressor, the four feet of cylinder seat are fixed with motor stator, the four feet of cylinder seat need to support a certain height to ensure the safety distance between enameled wire and cylinder seat.

[0004] The problems of the prior art are that due to the height of motor enameled wire, the cylinder head part of cylinder seat and the exhaust cavity on cylinder seat can only be arranged upward, resulting in that the height of pump body is high, the volume of compressor is increased, the installation space is increased, the supporting part of pump body is at the bottom, the height is increased, the center of gravity is increased, and the problems of insufficient stability of pump body and large vibration amplitude are caused, and the weight of cylinder head part of cylinder seat is large, resulting in that the head of pump body is heavy and the tail is light, and the running stability of compressor is affected. UTILITY MODEL CONTENTS

[0005] The utility model aims at the problems existing in the prior art, and provides a connecting structure of compressor cylinder seat and motor, which has the advantages of small volume and stable operation.

[0006] To achieve the above object, the utility model adopts the technical scheme of a connecting structure of compressor cylinder seat and motor, which comprises a cylinder seat, the cylinder seat comprises a cylinder head part and a mounting platform part, the mounting platform part is connected with the middle part of the cylinder head part in the height direction, a piston hole is formed in the cylinder head part, a piston is movably arranged in the piston hole, an installation groove for installing eccentric parts of crankshaft is formed in the middle part of the mounting platform part, a sunken platform is arranged on the bottom side of the mounting platform part, a crankshaft is rotatably connected to the middle part of the sunken platform, a connecting rod is movably arranged between the piston and the crankshaft, a motor is arranged on the bottom surface of the mounting platform part, the stator winding of the motor is arranged in the form of annular with a gap, and the position of the gap corresponds to the position of the bottom of the cylinder head part.

[0007] In the above scheme, the middle part of the cylinder head of the cylinder block is connected with the mounting platform to reduce the height of the top end of the cylinder head relative to the mounting platform, thereby reducing the overall height of the compressor, the cylinder head is provided with a piston hole to connect the piston for compressing gas, a mounting groove is provided to leave space for the rotation of the eccentric part of the crankshaft, the eccentric part of the crankshaft drives the connecting rod and the piston to move, thereby realizing the compression function of the gas, a sunken platform is provided on the middle bottom side of the mounting platform part to rotatably connect the crankshaft, the stator winding of the motor is arranged in an annular shape on the outer ring of the rotor, the sunken cylinder head is avoided through the gap, the weight balance of the head and tail ends of the pump body is achieved by reducing the weight of the motor on the cylinder head side, thereby reducing the vibration and noise of the pump body during operation.

[0008] Further, a C-shaped wire slot hole is formed in the stator core of the motor, a plurality of winding blocks are arranged in an annular shape in the C-shaped wire slot hole, and a stator winding is connected to the winding blocks.

[0009] The motor comprises a motor stator and a motor rotor, a C-shaped wire slot hole is formed in the stator core of the motor stator, and a winding block is arranged to connect the stator winding, and a rotor mounting hole is formed between the inner end of the winding block and the stator core to cooperate with the rotor.

[0010] Further, an insulating winding frame is arranged on the two end faces of the stator core, and the insulating winding frame comprises a C-shaped frame structure located outside the stator winding.

[0011] The insulating winding frame is arranged to ensure the wire type of the two ends of the stator winding and the insulation performance between the stator winding and the stator core.

[0012] Further, a hollow groove is arranged on one side of the stator core, and the position of the hollow groove corresponds to the position of the gap.

[0013] Since the stator winding is not arranged on the gap side of the stator core, the hollow groove is arranged to further reduce the weight of the cylinder head side of the pump body, so that the weight of the head and tail ends of the pump body is close to each other, thereby improving the balance performance.

[0014] Further, the eccentric part comprises an eccentric block and an eccentric shaft, one end of the connecting rod is rotatably connected with the eccentric shaft, and the other end of the connecting rod is rotatably connected with the piston.

[0015] The eccentric block is arranged to balance the centrifugal force of the rotation of the eccentric shaft, the eccentric shaft is rotatably connected with the connecting rod, and the motion power of the piston is provided.

[0016] Further, a plurality of cylinder block mounting feet are arranged on the bottom surface of the mounting platform part, and fastening bolts for fixing the motor stator are threadedly connected at the cylinder block mounting feet.

[0017] The cylinder base mounting foot is arranged to be in close contact with the motor stator, and the motor stator is fixed on the cylinder base mounting foot through fastening bolts.

[0018] Further, the cylinder head part comprises a horizontally arranged cylinder surface part and a circular table part, and a plurality of threaded holes are formed in the cylinder surface part.

[0019] The cylinder surface part is provided with threaded holes for connecting the cylinder cover, the valve group part, and the piston hole formed in the middle of the circular table part and the cylinder surface part.

[0020] Further, the cylinder head part comprises a cylinder base sound absorbing cavity with an opening facing upward, and a flow channel is arranged between the cylinder base sound absorbing cavity and the end surface of the cylinder surface part.

[0021] The cylinder base sound absorbing cavity is arranged to deliver the compressed gas, and the compressed gas in the cylinder is discharged to the cylinder base sound absorbing cavity through the valve group and the flow channel, and then is discharged to the compressor through a pipeline.

[0022] Compared with the prior art, the utility model has the beneficial effects that:

[0023] 1. The space at the bottom of the cylinder head part is left out by arranging a notch at the stator winding of the motor, the middle part of the cylinder head part is connected with the mounting platform part, the cylinder head part is sunken to reduce the relative height of the cylinder head part and the overall height of the compressor, the volume of the compressor is reduced, the installation space of the compressor is reduced, and the space utilization of the refrigeration appliance is improved.

[0024] 2. The notch is arranged at the stator winding of the motor stator below the cylinder head, and the hollow groove is formed in the stator core, so that the weight of the cylinder head in the direction of the machine core is reduced, the gravity center of the machine core is close to the rotating gravity center of the motor, the balance stability of the machine core is improved, the vibration amplitude of the machine core is reduced, and the vibration and noise of the compressor are reduced.

[0025] 3. The cylinder head of the cylinder base is moved downward, the center of the cylinder hole is close to the center line of the cylinder base, the bending arm is reduced, the strength is improved, the deformation amount is reduced, and the operation stability of the compressor is improved; the cylinder head of the cylinder base is moved downward, the gravity center of the cylinder base is moved downward, the gravity center of the machine core of the compressor is moved downward, the vibration gravity center of the compressor is reduced, and the vibration and noise of the compressor are reduced. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 FIG. 1 is a structure perspective view of a connecting structure of a compressor cylinder base and a motor according to an embodiment of the utility model;

[0027] Figure 2 FIG. 2 is a structure sectional view of a connecting structure of a compressor cylinder base and a motor according to an embodiment of the utility model;

[0028] Figure 3 FIG. 3 is an explosion view of a connecting structure of a compressor cylinder base and a motor according to an embodiment of the utility model.

[0029] Figure 4 The structure top view of the motor stator in the embodiment of the utility model;

[0030] Figure 5 The structure perspective view of the motor stator in the embodiment of the utility model;

[0031] In the figure: 1, cylinder head; 101, cylinder surface piece; 102, circular table piece; 103, cylinder seat sound-absorbing cavity; 2, installation platform part; 3, piston hole; 4, piston; 5, installation groove; 6, sunken table; 7, crankshaft; 8, connecting rod; 9, stator winding; 10, stator core; 11, rotor; 12, flow channel; 13, C-shaped wire slot hole; 14, wire winding block; 15, rotor installation hole; 16, outer ring plate; 17, horizontal plate; 18, vertical plate; 19, annular connecting flat plate; 20, hollow groove; 21, eccentric block; 22, eccentric shaft; 23, cylinder seat installation foot; 24, fastening bolt; 25, threaded hole. DETAILED DESCRIPTION

[0032] The technical scheme of the utility model will be described clearly and completely below in conjunction with the drawings in the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model. In the description of the utility model, it should be explained that the terms front, back, left, right and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the utility model product is usually placed, which is only for the convenience of describing the utility model or simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a specific orientation, be constructed or operated in a specific orientation, and therefore cannot be understood as limiting the utility model. EMBODIMENT

[0033] As shown in Figures 1-5 A connecting structure of compressor cylinder seat and motor, including cylinder seat, the cylinder seat contains cylinder head 1, installation platform part 2, the installation platform part 2 is connected with the middle part of cylinder head 1 in the height direction, the cylinder head 1 is provided with piston hole 3, the piston hole 3 is movably provided with piston 4, the middle part of installation platform part 2 is formed with installation groove 5 for the installation of eccentric part of crankshaft 7, the bottom side of installation platform part 2 is provided with sunken table 6, the middle part of sunken table 6 is rotatably connected with crankshaft 7, the piston 4 and crankshaft 7 are movably provided with connecting rod 8, the bottom surface of installation platform part 2 is provided with motor, the stator winding 9 of motor is arranged along the annular with notch, the position of notch corresponds with the position of the bottom of cylinder head 1.

[0034] In the above scheme, by connecting the middle part of the cylinder head 1 of the cylinder block to the mounting platform, the height of the top of the cylinder head 1 relative to the mounting platform is lowered, thereby reducing the overall height of the compressor. The middle part of the cylinder head 1 is preferably in the center position, and the cylinder head 1 is provided with a piston hole 3 to connect the piston 4 for compressing the gas. A mounting groove 5 is provided to leave space for the eccentric component of the crankshaft 7 to rotate. The eccentric component of the crankshaft 7 drives the connecting rod 8 and the piston 4 to move, thereby realizing the gas compression function. A sinking platform 6 is provided on the bottom side of the middle part of the mounting platform part 2 to rotate and connect the crankshaft 7. The stator winding 9 of the motor is arranged in a ring shape on the outer ring of the rotor 11, and avoids the sunken cylinder head 1 through the gap. By reducing the weight of the motor on the cylinder head side, the weight of the head and tail ends of the pump body is balanced, thereby reducing the vibration and noise of the pump body during operation.

[0035] The utility model is based on the existing piston 4-type compressor. By partially giving way to the motor stator winding 9, a space is reserved below the cylinder head, so that the cylinder head of the cylinder seat can be moved downward, thereby reducing the height of the cylinder seat and the cylinder head, thereby achieving the purpose of reducing the height of the movement.

[0036] Furthermore, a C-shaped wire slot hole 13 is opened on the stator core 10 of the motor, and a plurality of winding blocks 14 are arranged in a ring shape inside the C-shaped wire slot hole 13. The stator winding 9 is connected to the winding block 14, and a rotor mounting hole 15 is formed between the inner end of the winding block 14 and the stator core 10.

[0037] The motor includes a motor stator and a motor rotor 11. A C-shaped wire slot 13 is opened on the stator core 10 of the motor stator, and a winding block 14 is provided to connect the stator winding 9. A rotor mounting hole 15 is formed between the inner end of the winding block 14 and the stator core 10 to cooperate with the rotor 11.

[0038] The winding block 14 has a T-shaped structure, and the outer end of the winding block 14 is integrally connected to the stator core 10 .

[0039] Furthermore, insulating winding frames are provided on both end surfaces of the stator core 10 , and the insulating winding frames include a C-shaped frame structure located on the outer ring of the stator winding 9 .

[0040] The insulating winding frame is provided to ensure the line shape of both ends of the stator winding 9 and the insulation performance between the stator winding 9 and the stator core 10.

[0041] The insulating winding frame is positioned on both sides of the stator core 10 by binding the stator winding 9. The C-shaped frame structure includes an outer ring plate 16. Inside the outer ring plate 16, a number of T-shaped units are arranged in a circular array. The shape of the T-shaped units matches the winding block 14 and includes a horizontal plate 17 and a vertical plate 18. An annular connecting plate 19 is provided in the direction of the opening of the outer ring plate 16.

[0042] Furthermore, a hollow groove 20 is provided on one side of the stator core 10 , and the position of the hollow groove 20 corresponds to the position of the notch.

[0043] Since the stator core 10 is not provided with the stator winding 9 on the notch side, the hollow slot 20 is provided to further reduce the weight of the cylinder head side of the pump body, so that the weight of the head and tail ends of the pump body are close, thereby improving the balance performance.

[0044] The stator core 10 can be completely hollowed out or partially hollowed out.

[0045] Furthermore, the eccentric component includes an eccentric block 21 and an eccentric shaft 22 , one end of the connecting rod 8 is rotatably connected to the eccentric shaft 22 , and the other end of the connecting rod 8 is rotatably connected to the piston 4 .

[0046] The centrifugal force of the eccentric shaft 22 is balanced by the eccentric block 21 . The eccentric shaft 22 is rotatably connected to the connecting rod 8 to provide the piston 4 with movement power.

[0047] Furthermore, a plurality of cylinder seat mounting feet 23 are provided on the bottom surface of the mounting platform portion 2 , and fastening bolts 24 for fixing the motor stator are threadedly connected to the cylinder seat mounting feet 23 .

[0048] The cylinder seat mounting foot 23 is provided to fit and position the motor stator, and the motor stator is fixed to the cylinder seat mounting foot 23 by tightening the bolts 24 .

[0049] Furthermore, the cylinder head 1 includes a horizontally arranged cylinder surface member 101 and a frustum member 102 , and the cylinder surface member 101 is provided with a plurality of threaded holes 25 .

[0050] The cylinder surface member 101 is provided with a threaded hole 25 for connecting the cylinder cover and the valve group part, and the piston hole 3 is provided through the middle of the frustum member 102 and the cylinder surface member 101.

[0051] The truncated table member 102, the cylinder surface member 101 and the mounting platform portion 2 are integrally cast.

[0052] Furthermore, the cylinder head 1 includes a cylinder base silencer cavity 103 with an upward opening, and a flow channel 12 is provided between the cylinder base silencer cavity 103 and the end surface of the cylinder surface member 101 .

[0053] A cylinder base silencer chamber 103 is provided for transmitting compressed gas. The compressed gas in the cylinder is discharged to the cylinder base silencer chamber 103 through the valve group and the flow channel 12, and then discharged from the compressor through the pipeline.

[0054] The notch leaves the bottom of the cylinder seat silencer cavity 103 clear to avoid interference.

[0055] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A connection structure between a compressor cylinder base and a motor, comprising a cylinder base, characterized in that: The cylinder seat includes a cylinder head and a mounting platform portion, the mounting platform portion is connected to the middle portion of the cylinder head in the height direction, a piston hole is opened on the cylinder head, a piston is movably arranged in the piston hole, a mounting groove for installing the eccentric component of the crankshaft is formed in the middle portion of the mounting platform portion, a sinking platform is provided on the bottom side of the mounting platform portion, the middle portion of the sinking platform is rotatably connected to the crankshaft, a connecting rod is movably provided between the piston and the crankshaft, a motor is provided on the bottom surface of the mounting platform portion, and the stator winding of the motor is arranged along a ring with a notch, and the position of the notch corresponds to the position of the bottom of the cylinder head.

2. The connection structure between the compressor cylinder block and the motor according to claim 1, characterized in that: The stator core of the motor is provided with a C-shaped wire slot hole, a plurality of winding blocks are arranged in a ring shape in the C-shaped wire slot hole, the stator winding is connected to the winding block, and a rotor mounting hole is formed between the inner end of the winding block and the stator core.

3. The connection structure between the compressor cylinder block and the motor according to claim 2, characterized in that: Insulating winding frames are provided on both end surfaces of the stator core, and the insulating winding frames include a C-shaped frame structure located on the outer ring of the stator winding.

4. The connection structure between the compressor cylinder block and the motor according to claim 3, characterized in that: A hollow groove is provided on one side of the stator core, and the position of the hollow groove corresponds to the position of the notch.

5. The connection structure between the compressor cylinder base and the motor according to claim 1, characterized in that: The eccentric component includes an eccentric block and an eccentric shaft. One end of the connecting rod is rotatably connected to the eccentric shaft, and the other end of the connecting rod is rotatably connected to the piston.

6. The connection structure between the compressor cylinder base and the motor according to claim 1, characterized in that: A plurality of cylinder seat mounting feet are provided on the bottom surface of the mounting platform portion, and fastening bolts for fixing the motor stator are threadedly connected to the cylinder seat mounting feet.

7. The connection structure between the compressor cylinder base and the motor according to claim 1, characterized in that: The cylinder head comprises a horizontally arranged cylinder surface component and a frustum component, and the cylinder surface component is provided with a plurality of threaded holes.

8. The connection structure between the compressor cylinder base and the motor according to claim 7, characterized in that: The cylinder head comprises a cylinder seat silencer cavity with an upward opening, and a flow channel is provided between the cylinder seat silencer cavity and the end surface of the cylinder face member.

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