WO2017000241A1

WO2017000241A1 - Compressor

Info

Publication number: WO2017000241A1
Application number: PCT/CN2015/082874
Authority: WO
Inventors: 严志奇; 宋东东
Original assignee: 安徽美芝制冷设备有限公司; 美的集团股份有限公司
Priority date: 2015-06-30
Filing date: 2015-06-30
Publication date: 2017-01-05

Abstract

A compressor (100) comprises a housing (1), and comprises a compressor pump body (2), a machine frame (3) and a motor (5) that are disposed in the housing (1). A stator positioning portion (8) is formed on a stator (52) of the motor (5). A machine frame positioning portion matching the stator positioning portion (8) is disposed on the machine frame (3). A height limiting portion (7) is disposed on the machine frame (3) and abuts against the upper surface of the stator (52).

Description

compressor

Technical field

The present invention relates to the field of compressor technology, and more particularly to a compressor.

Background technique

The movement of the existing refrigeration compressor generally adopts a reciprocating crankshaft linkage mechanism, and the pump body includes components such as a crankcase, a crankshaft, a connecting rod, a piston and a valve block, and the electric motor includes a stator and a rotor. When the movement is assembled, the stator screw holes are positioned, and the stator is fixed to the stator feet of the crankcase by screws. Because the refrigeration compressor has high requirements on the matching clearance between the stator and the rotor, the existing assembly process is complicated, the gap between the stator and the rotor is poor, and the assembly method of the stator screw hole positioning causes the crankcase to be processed by a special machine, and the parts have poor versatility.

Summary of the invention

The present invention aims to solve at least one of the above technical problems in the prior art to some extent.

To this end, the present invention proposes a compressor having a stator and frame having an improved positioning structure that simplifies the assembly process of the stator and the frame, at least to some extent.

A compressor according to an embodiment of the present invention includes: a housing; a compressor pump body and a motor for driving the compressor pump body, the compressor pump body and the motor are disposed in the housing, The motor has a stator, the stator is formed with a stator positioning portion; the frame is disposed in the housing, and the frame is provided with a frame positioning portion that cooperates with the stator positioning portion; a height restricting portion that is disposed on the frame and that is stopped on an upper surface of the stator.

According to the compressor of the embodiment of the invention, the positioning of the stator positioning portion and the frame positioning portion is matched, so that the rotation of the stator relative to the frame can be effectively prevented, the primary limit of the stator can be realized in the circumferential direction, and the stator is supported by the height restriction portion. Limiting the position, the limit of the stator is realized in height, and the stator is prevented from being swayed up and down. Compared with the conventional way of positioning by screws, the improved positioning structure of the invention can simplify the assembly process, and the positioning is reliable and convenient.

In addition, the compressor according to an embodiment of the present invention may further have the following additional technical features:

According to some embodiments of the invention, the stator positioning portion and the frame positioning portion are each configured in an arc shape.

According to some embodiments of the present invention, the stator positioning portion includes: a first stator positioning portion and a second stator positioning portion, the first stator positioning portion and the second stator positioning portion are respectively oriented away from each other Bending, the first stator positioning portion and the second stator positioning portion are symmetrically arranged with respect to a rotation axis of the motor; the frame positioning portion includes: a first machine that cooperates with the first stator positioning portion a frame positioning portion and a second frame positioning portion that cooperates with the second stator positioning portion.

According to some embodiments of the present invention, the outer peripheral surface of the stator has a two-stage circular arc structure to constitute the first stator positioning portion and the second stator positioning portion.

According to some embodiments of the present invention, the height restriction portion includes: a first height restriction portion and a second height restriction portion, the first height restriction portion and the second height restriction portion being respectively disposed at the first machine The rack positioning portion and the opposite inner side surface of the second rack positioning portion are disposed at the same height as the first height restricting portion and the second height restricting portion.

According to some embodiments of the present invention, the height restricting portion is a limiting protrusion integrally formed on the frame.

According to some embodiments of the invention, the bottom of the motor is mounted on a seat spring that is secured to the upper surface of the bottom wall of the housing.

According to some embodiments of the invention, the compressor further includes a rotation limiter that prevents rotation of the stator relative to the frame.

According to some embodiments of the invention, the rotation limiter is disposed on the frame and cooperates with an outer circumferential surface of the stator to limit rotation of the stator.

According to some embodiments of the present invention, the frame includes: a top plate portion, a first side plate portion, and a second side plate portion, the first side plate portion and the second side plate portion being oriented from the top plate portion The first side plate portion and the second side plate portion constitute the first frame positioning portion and the second frame positioning portion.

According to some embodiments of the present invention, both side edges of the first side plate portion are welded and fixed to the stator and both side edges of the second side plate portion are welded and fixed to the stator.

DRAWINGS

The above and/or additional aspects and advantages of the present invention will become apparent and readily understood from

1 is a schematic view of a compressor in accordance with an embodiment of the present invention;

Figure 2 is a schematic view of the frame and the motor after assembly;

Figure 3 is a cross-sectional view of Figure 2;

Figure 4 is a schematic view of an electric motor of an embodiment;

Figure 5 is a schematic view of a motor of another embodiment;

Figure 6 is a schematic view of the rack;

Figure 7 is a cross-sectional view of the frame.

detailed description

Embodiments of the invention are described in detail below, examples of which are illustrated in the accompanying drawings in which The same or similar reference numerals indicate the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are intended to be illustrative of the invention and are not to be construed as limiting.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", The orientation or positional relationship of the "top", "bottom", "inside", "outside" and the like is based on the orientation or positional relationship shown in the drawings, and is merely for the convenience of describing the present invention and simplifying the description, rather than indicating or implying The device or component referred to must have a particular orientation, is constructed and operated in a particular orientation, and thus is not to be construed as limiting the invention.

It should be noted that the terms "first" and "second" are used for descriptive purposes only, and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" and "second" may include one or more of the features either explicitly or implicitly. Further, in the description of the present invention, the meaning of "a plurality" is two or more unless otherwise specified.

A compressor 100 according to an embodiment of the present invention will be described in detail below with reference to Figs. The compressor 100 according to an embodiment of the present invention may include a main structure such as a casing 1, a compressor pump body 2, a motor 5, a frame 3, and the like.

Referring to FIG. 1 and in conjunction with FIG. 3, the casing 1 may be formed as a sealed casing 1 in which a compressor pump body 2 is disposed, and the compressor pump body 2 may include a crankshaft 23, a connecting rod 22, and a cylinder 21 Components such as pistons, it will be understood that the construction of the compressor pump body 2 is well known and will not be described in detail herein. The motor 5 is connected to the crankshaft 23 of the compressor pump body 2 and is used to drive the compressor pump body 2 to compress the refrigerant.

As shown in FIG. 3, the motor 5 has a stator 52 and a rotor 51. The rotor 51 is rotatably disposed inside the stator 52. The stator 52 is formed with a stator positioning portion. For example, referring to the first stator positioning portion of FIGS. 4 and 5. 521 and second stator positioning portion 522.

As shown in FIG. 1 , the frame 3 is disposed in the casing 1 , and the frame 3 is provided with a frame positioning portion 8 (in conjunction with FIG. 7 ) that cooperates with the stator positioning portion, and passes through the stator positioning portion and the frame positioning portion 8 . The positioning fit enables the stator 52 to be prevented from rotating relative to the frame 3 at least to some extent.

As shown in FIGS. 3 and 6, the height restricting portion 7 is provided on the frame 3 and abuts against the upper surface of the stator 52, and the height restricting portion 7 serves to restrict the stator 52 in the vertical direction (parallel to the axial direction of the crankshaft 23). The degree of freedom of the direction prevents the stator 52 from moving up and down.

Thus, the compressor 100 according to the embodiment of the present invention can be prevented from rotating relative to the frame 3 by the positioning of the stator positioning portion and the frame positioning portion 8, thereby achieving the primary limit of the stator 52 in the circumferential direction. At the same time, the stator 52 is limited by the height limiting portion 7, which realizes the limitation of the stator 52 in height, and prevents the stator 52 from moving up and down. Compared with the conventional screw positioning manner, the improved positioning structure of the present invention can Simplify the assembly process, and the positioning is reliable and convenient.

The positioning structure will be described in detail below with reference to specific embodiments.

Referring to FIGS. 2 and 4 to 7, the stator positioning portion and the frame positioning portion 8 are each configured in an arc shape such as a circular arc shape. Further, as shown in FIGS. 4 and 5, the stator positioning portion includes a first stator positioning portion 521 and a second stator positioning portion 522, and the first stator positioning portion 521 and the second stator positioning portion 522 are respectively oriented away from each other. The first stator positioning portion 521 and the second stator positioning portion 522 are symmetrically distributed with respect to the rotation axis of the motor 5. Correspondingly, as shown in FIG. 6 and FIG. 7 , the rack positioning portion 8 includes a first rack positioning portion 81 and a second rack positioning portion 82 , and the first rack positioning portion 81 and the first stator positioning portion 521 are positioned. The second frame positioning portion 82 is in a positional engagement with the second stator positioning portion 522, whereby the positioning of the frame 3 and the stator 52 is better and more reliable, thereby effectively preventing the stator 52 from rotating relative to the frame 3.

As a preferred embodiment, as shown in FIGS. 4 and 5, the outer peripheral surface of the stator 52 has a two-stage circular arc structure that constitutes a first stator positioning portion 521 and a second stator positioning portion 522. Specifically, in one embodiment, the outer circumferential surface of the stator 52 is divided into two

opposite arc structures

521, 522, and two opposite

planar structures

523, 524. In the example of FIG. 4, two arcs The

structures

521, 522 are connected to the two-segment

planar structures

523, 524, and in the example of Figure 5, the two

arcuate structures

521, 522 are connected to the two-segment

planar structures

523, 524 by

facet structures

525, 526.

The height restriction portion 7 will be described in detail below with reference to the embodiments.

As shown in FIG. 3 and FIG. 6 to FIG. 7, in some embodiments, the height restriction portion 7 may include a first height restriction portion 71 and a second height restriction portion 72, a first height restriction portion 71 and a second height restriction portion. 72 are respectively disposed on the opposite inner side surfaces of the first frame positioning portion 81 and the second frame positioning portion 82, in other words, the first height restriction portion 71 is disposed on the inner side surface of the first frame positioning portion 81, the first The inner side surface of the rack positioning portion 81 is a surface facing the second rack positioning portion 82, and the second height restricting portion 72 is disposed on the inner side surface of the second rack positioning portion 82, and the inside of the second rack positioning portion 82 The side surface is a surface facing the first frame positioning portion 81, and the installation heights of the first height restriction portion 71 and the second height restriction portion 72 are the same, and each of the height restriction portions 7 abuts against the upper surface of the stator 52. on. By providing the height restricting portion 7 on the frame positioning portion 8, the height of the stator 52 can be effectively restricted, and the stator 52 can be prevented from moving up and down.

For example, in some embodiments, the height restriction 7 may be a limit projection integrally formed on the frame 3.

According to some embodiments of the present invention, as shown in FIG. 1, the bottom of the motor 5 is mounted on a seat spring 4 which is fixed to the upper surface of the bottom wall of the casing 1. It will be understood that the construction of the seat spring 4 is well known to those skilled in the art and therefore will not be described again here.

As shown in FIG. 6, in order to better prevent the rotation of the stator 52 relative to the frame 3, the compressor 100 further includes

rotation limiting portions

91, 92 for preventing rotation of the stator 52 relative to the frame 3, through the rotation limiting portion 91, The limit of 92 pairs of stators 52 further increases the limit on the degree of freedom of rotation of the stator 52, preventing relative rotation of the stator 52 relative to the frame 3. Specifically, the

rotation limiting portions

91, 92 may be disposed on the frame 3 and cooperate with the outer circumferential surface of the stator 52 to restrict the rotation of the stator 52. For example, as shown in FIG. 6, the

rotation limiting portions

91, 92 may be disposed in the second. Both sides of the side plate portion 32 are not limited thereto.

The construction of the frame 3 will be described in detail below in conjunction with specific embodiments.

As shown in FIGS. 2, 6, and 7, in some embodiments, the frame 3 may include a top plate portion 33, a first side plate portion 31, and a second side plate portion 32, a first side plate portion 31 and a second The side plate portions 32 extend downward from the top plate portion 33 and are disposed opposite to each other, and the first side plate portion 31, the second side plate portion 32, and the top plate portion 33 may be formed by stretch drawing of a steel plate, but are not limited thereto. The first side plate portion 31 has an arcuate cross section to constitute a first frame positioning portion 81, and the second side plate portion 32 has an arcuate cross section to constitute a second frame positioning portion 82.

As shown in FIG. 2, the side edges 63, 64 of the first side plate portion 31 are welded and fixed to the stator 52, and the side edges 61, 62 of the second side plate portion 32 are also welded and fixed to the stator 52, thus fundamentally The technical problem of the rotation of the stator 52 relative to the frame 3 is solved, so that the stator 52 is fixedly fixed relative to the frame 3. Preferably, the welding method uses laser welding.

A compressor 100 in accordance with some preferred embodiments of the present invention will now be described in detail with reference to Figures 1-7.

Referring to Fig. 1, the casing 1 is internally provided with a compressor pump body 2, a motor 5, a frame 3 and a seat spring 4 fixed to the upper surface of the bottom wall of the casing 1, the motor 5 and the frame 3 is disposed on the seat spring 4, the compressor pump body 2 is disposed on the upper surface of the frame 3, and the compressor pump body 2 may include a cylinder 21, a piston, a connecting rod 22 and a crankshaft 23, and the piston is slidably disposed in the cylinder 21 The connecting rod 22 is for connecting the piston to the crankshaft 23. The upper end of the crankshaft 23 passes through the top plate portion 33 of the frame 3, and the lower end projects into the inside of the frame 3. The rotor 51 of the motor 5 is fixed to the crankshaft 23 to drive the crankshaft 23. Turn.

The first side plate portion 31 and the second side plate portion 32 of the frame 3 are respectively formed in an arc shape, the first side plate portion 31 constitutes a first frame positioning portion 81, and the second side plate portion 32 constitutes a second frame positioning. Part 82. Correspondingly, the outer peripheral surface of the stator 52 is formed with two

arc segments

521, 522 to form a first stator positioning portion 521 and a second stator positioning portion 522, and the first stator positioning portion 521 and the first frame positioning portion 81 The outer surface of the first stator positioning portion 521 abuts against the inner surface of the first frame positioning portion 81, the second stator positioning portion 522 cooperates with the second frame positioning portion 82, and the second stator positioning portion 522 The outer surface abuts against the inner surface of the second frame positioning portion 82.

The first stator positioning portion 521 and the second stator positioning portion 522 are symmetrical about the rotation axis of the motor 5, and the arc lengths corresponding to the motor 5 of the first stator positioning portion 521 and the second stator positioning portion 522 may be equal, and corresponding to the center of the circle The angle can be between 45° and 180°. The first frame positioning portion 81 and the second frame positioning portion 82 may also be symmetrical about the rotation axis of the motor 5, and the arc lengths corresponding to the first frame positioning portion 81 and the second frame positioning portion 82 may be unequal. For example, a relatively long, relatively short, shorter one of the frame positioning portions 8 has an arc length preferably not less than the arc length of the corresponding stator positioning portion, and may be equal, for example.

A first height restricting portion 71 is disposed on an inner surface of the first side plate portion 31, and a second height restricting portion 72, a first height restricting portion 71 and a second height restricting portion are disposed on an inner surface of the second side plate portion 32. 72 is oppositely disposed and the height is the same. The first height limiting portion 71 and the second height limiting portion 72 respectively abut against the upper surface of the stator 52, so that the height of the stator 52 can be effectively restrained by the seat spring 4, and the motor is prevented. 5 up and down.

The both side edges 63, 64 of the first side plate portion 31 and the side edges 65, 66 of the second side plate portion 32 are welded and fixed to the outer peripheral surface of the stator 52, respectively.

In summary, the compressor 100 according to some embodiments of the present invention is positioned with the frame 3 by the contour of the stator 52, thereby simplifying the assembly process, and the frame 3 can be formed by drawing and bending a steel plate without special machining. The parts have excellent manufacturing manufacturability and strong versatility, which greatly improves the assembly fatigue of the existing refrigeration compressor 100 and the disadvantages of poor versatility of the components. The accessory ground is assembled and fixed by welding the stator 52 and the frame 3, thereby improving the structure of the movement. Reliability ensures that the performance of the refrigeration compressor 100 is stable.

In the description of the present specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples", etc. Particular features, structures, materials or features described in the examples or examples are included in at least one embodiment or example of the invention. In the present specification, the schematic representation of the above terms does not necessarily mean the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

While the embodiments of the present invention have been shown and described, the embodiments of the invention may The scope of the invention is defined by the claims and their equivalents.

Claims

A compressor, comprising:

case;

a compressor pump body and a motor for driving the compressor pump body, the compressor pump body and the motor are both disposed in the housing, the motor has a stator, and the stator is formed with a stator positioning portion ;

a rack, the rack being disposed in the housing, the rack being provided with a rack positioning portion that cooperates with the stator positioning portion;

a height restricting portion that is disposed on the frame and that is stopped on an upper surface of the stator.
The compressor according to claim 1, wherein the stator positioning portion and the frame positioning portion are each configured in an arc shape.
The compressor according to claim 2, wherein said stator positioning portion comprises: a first stator positioning portion and a second stator positioning portion, said first stator positioning portion and said second stator positioning portion Curved away from each other, the first stator positioning portion and the second stator positioning portion being symmetrically arranged with respect to the rotation axis of the motor;

The rack positioning portion includes a first rack positioning portion that cooperates with the first stator positioning portion and a second rack positioning portion that cooperates with the second stator positioning portion.
The compressor according to claim 3, wherein the outer peripheral surface of the stator has a two-stage circular arc structure to constitute the first stator positioning portion and the second stator positioning portion.
The compressor according to claim 3, wherein the height restricting portion includes: a first height restricting portion and a second height restricting portion, wherein the first height restricting portion and the second height restricting portion are respectively provided On the opposite inner side surfaces of the first frame positioning portion and the second frame positioning portion, and the first height restriction portion and the second height restriction portion are disposed at the same height.
The compressor according to claim 1, wherein said height restricting portion is a limiting projection integrally formed on said frame.
The compressor according to claim 1, wherein a bottom of said motor is mounted on a seat spring, and said seat spring is fixed to an upper surface of a bottom wall of said casing.
The compressor according to claim 1, further comprising: a rotation stopper that prevents the stator from rotating relative to the frame.
The compressor according to claim 8, wherein said rotation restricting portion is provided on said frame and cooperates with an outer peripheral surface of said stator to restrict rotation of said stator.
The compressor according to claim 3, wherein the frame comprises: a top plate portion, a first side plate portion, and a second side plate portion, the first side plate portion and the second side plate portion Extending downward from the top plate portion and oppositely disposed, The first side plate portion and the second side plate portion respectively constitute the first frame positioning portion and the second frame positioning portion.
The compressor according to claim 10, wherein both side edges of the first side plate portion are welded and fixed to the stator and both side edges of the second side plate portion are welded and fixed to the stator.