CN115126678A - Compressor and refrigeration equipment - Google Patents

Abstract

The invention provides a compressor and refrigeration equipment, wherein a crankshaft limiting structure comprises a compressor shell and a crankshaft arranged in the compressor shell, a limiting piece is arranged on the inner wall of the compressor shell, and two ends of the crankshaft are respectively in plug-in connection with the limiting piece opposite to the crankshaft. According to the compressor and the refrigeration equipment provided by the invention, the two ends of the crankshaft are inserted and limited by the limiting pieces, so that the crankshaft is prevented from shaking relative to the compressor shell, and the whole crankcase can be prevented from shaking relative to the compressor shell. The surface of the crankcase body of the crankcase does not need to be provided with limiting points, the limitation to the crankshaft can be realized only by arranging the limiting pieces on the inner wall of the compressor shell, and the limitation to the crankcase can be indirectly realized. In this embodiment, the volume of the case body of the crankcase does not increase, and accordingly, the internal space of the compressor housing fitted thereto does not increase, and the compressor can be prevented from being excessively large.

Description

Compressor and refrigeration equipment

Technical Field

The invention belongs to the technical field of household appliances, and particularly relates to a compressor and refrigeration equipment.

Background

The compressor is an important part of refrigeration equipment such as an air conditioner, a refrigerator and the like. A conventional compressor, such as a piston compressor, is a compressor for pressurizing and delivering gas by reciprocating a piston, and belongs to a displacement type compressor. The piston compressor mainly comprises a compressor shell, a crankshaft, a connecting rod, a piston, a valve, an oil circulation system and other parts, the crankshaft is driven to rotate through a driving motor, so that the piston can reciprocate in a cylinder, the volumes of working cavities on two sides of the piston alternately change in an opposite mode, gas on one side with reduced volume is exhausted through a gas valve due to pressure increase, gas on one side with increased volume is sucked through the gas valve due to pressure reduction, and a transmission part is used for realizing reciprocating motion and compressing a refrigerant.

The compressor is in transportation or use, sometimes because rock, fore-and-aft direction, left and right direction or upper and lower direction etc. rock and can lead to the core to take off the spring when too big, lead to compressor vibration noise big, can lead to the compressor to become invalid even. In order to prevent the movement of the compressor from vibrating too much, the conventional compressor is provided with a plurality of limit points (as shown in fig. 1 and fig. 2) on the surface of the crankcase, the limit points are protruded from the surface of the case body of the crankcase, and the shell of the compressor correspondingly needs to be matched with the limit points on the surface of the case body, so that the weight of the crankcase is increased, the avoiding space of the shell is increased, and the size of the compressor is too large.

Disclosure of Invention

The embodiment of the invention aims to provide a compressor and refrigeration equipment, and aims to solve the technical problems that in the prior art, the weight of a crankcase is increased and a compressor shell is enlarged due to the fact that a limit point is arranged on the crankcase.

In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a compressor, include compressor housing, locate the inside bent axle of compressor housing, the inner wall of compressor housing is provided with the locating part, the both ends of bent axle are rather than just rather the locating part is pegged graft and is set up.

In one embodiment, the crankshaft comprises a main shaft, an eccentric part and an auxiliary shaft which are connected in sequence, the main shaft and the auxiliary shaft are coaxially arranged, and the eccentric part is eccentrically arranged relative to the main shaft.

In one embodiment, the eccentric portion includes a connecting shaft, and a connecting rod sleeved and fixed on the connecting shaft, and opposite ends of the connecting shaft are respectively and fixedly connected with the main shaft and the auxiliary shaft.

In one embodiment, the limiting member has an inner concave limiting surface or the limiting member and the compressor shell are enclosed to form an inner concave limiting surface, the end of the crankshaft has an outer convex limiting surface, and the outer convex limiting surface is inserted into the inner concave limiting surface; or the limiting part is provided with an outward convex limiting surface, the end part of the crankshaft is provided with an inward concave limiting surface, and the outward convex limiting surface is inserted into the inward concave limiting surface.

In one embodiment, an elastic surface layer or an elastic salient point is fixed on the surface of the convex limiting surface and/or the concave limiting surface; or a spring is connected between the convex limiting surface and the concave limiting surface in an abutting mode.

In one embodiment, the convex limiting surface and the concave limiting surface are square, arc-shaped or U-shaped on the longitudinal section of the crankshaft.

In one embodiment, when the limiting member and the compressor housing enclose a concave limiting surface, the limiting member comprises a limiting baffle, and an inner side wall of the limiting baffle and an inner wall of the compressor housing enclose the concave limiting surface.

In one embodiment, when the end part of the crankshaft is provided with a concave limiting surface, the end part of the crankshaft is fixedly provided with a shaft end plate, and the inner side wall of the shaft end plate and the end wall of the crankshaft enclose the concave limiting surface.

In one embodiment, the compressor housing includes an upper shell and a lower shell fixedly connected to the upper shell, at least one of the limiting members is fixed to an inner wall of the upper shell, and at least one of the limiting members is fixed to an inner wall of the lower shell.

In one embodiment, the compressor housing is integrally formed with the retainer; or, the compressor housing and the limiting part are formed in a split mode, and the compressor housing is fixedly connected with the limiting part.

In one embodiment, the compressor further comprises a box body arranged in the compressor shell and a piston driven by the crankshaft to reciprocate, the piston is arranged in the box body, and two ends of the crankshaft extend out of the box body.

The invention also provides refrigeration equipment comprising the compressor.

The compressor and the refrigeration equipment provided by the invention have the beneficial effects that: compared with the prior art, the compressor comprises the compressor shell and the crankshaft, the limiting pieces are fixedly arranged on the inner wall of the compressor shell, the two ends of the crankshaft extend to the inner wall close to the compressor shell, and the two ends of the crankshaft are inserted into the limiting pieces for limiting so as to prevent the crankshaft from shaking relative to the compressor shell, so that the whole crankcase can be prevented from shaking relative to the compressor shell. So for the box surface of crankcase need not to set up the spacing point, only need set up the locating part at compressor housing's inner wall and can realize spacing to the bent axle, thereby indirectly realize spacing to the crankcase. Because the case surface of crankcase need not to set up the restriction point to avoided the case surface of crankcase to set up the restriction point and leaded to the problem of box volume increase, correspondingly, rather than the inner space of complex compressor housing can not increase yet, can prevent that the compressor volume is too big.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

FIG. 1 is a perspective view of a prior art crankcase;

FIG. 2 is a top view of a prior art crankcase;

fig. 3 is a sectional view of a compressor provided in an embodiment of the present invention;

fig. 4 is a schematic structural diagram of an upper housing and a limiting member according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a lower housing and a limiting member according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a compressor housing and a position limiter according to an embodiment of the present invention;

fig. 7 is a schematic structural view of a first lower case according to an embodiment of the present invention;

fig. 8 is a schematic structural view of a second lower case according to an embodiment of the present invention.

Wherein, in the figures, the respective reference numerals:

1 a-a crankcase; 11 a-axial locator post; 12 a-a radial positioning boss;

1-a compressor housing; 11-upper shell; 12-a lower shell; 13-a stop; 131-a first limiting unit; 132-a second limiting unit; 2-a crankshaft; 21-a main shaft; 22-an eccentric portion; 221-a connecting shaft; 222-a connecting rod; 23-a secondary shaft; 3-a piston; 4-a box body; 51-an inward concave limiting surface; 52-convex limiting surface.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings, which is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

A description will now be given of a compressor provided in an embodiment of the present invention. The compressor is an important part of refrigeration electric equipment such as an air conditioner, a refrigerator and the like. The compressor structure in the prior art mainly comprises a compressor shell and a compressor pump body, wherein the compressor shell consists of an upper shell and a lower shell, and the compressor pump body is positioned in the compressor shell. The compressor pump body comprises a driving motor, a crankcase 1a and other components, a crankshaft and a piston are arranged in the crankcase 1a, the driving motor drives the crankshaft to rotate, and the piston reciprocates under the driving of the crankshaft. Because the compressor is at the in-process of work, the motion of the compressor pump body can produce vibration and noise, so need carry on spacingly to the compressor pump body, prevent structures such as crankcase 1a from making a round trip to move in the compressor housing, not only can produce great noise, still can lead to the compressor to become invalid.

Referring to fig. 1 and 2, fig. 1 and 2 are schematic structural diagrams of a crankcase 1a in the prior art, a crankshaft is disposed through the crankcase 1a, the crankcase 1a is provided with an axial positioning column 11a and a radial positioning protrusion 12a, both the axial positioning column 11a and the radial positioning protrusion 12a are used for being matched and positioned with a compressor housing, the axial positioning column 11a is used for limiting the crankcase 1a to shake in the axial direction of the crankshaft 2, and the radial positioning protrusion 12a is used for limiting the crankcase 1a to shake in the radial direction of the crankshaft 2. Specifically, the axial positioning column 11a is formed by protruding the outer wall of the crankcase 1a along the axial direction of the crankshaft, the compressor housing is correspondingly provided with a positioning hole, the axial positioning column 11a is inserted into the positioning hole to axially position the crankcase 1a, and the radial positioning protrusion 12a can be arranged on the periphery of the crankcase 1a, such as a corner, so that the crankcase 1a is in a special shape, which results in the excessive weight of the crankcase 1a, and needs a larger installation and accommodation space, the volume of the compressor housing is correspondingly increased, and the miniaturization of the device is not utilized.

In one embodiment of the present invention, referring to fig. 3, the compressor includes a compressor housing 1 and a crankshaft 2, and the crankshaft 2 is disposed inside the compressor housing 1. Both ends of the crankshaft 2 are disposed close to the inner wall of the compressor housing 1. The inner wall of the compressor housing 1 has the position-limiting members 13, and the number of the position-limiting members 13 is not limited herein, and may be two, such as two, three, four, etc. At least one of the limiting members 13 is used for limiting one end of the crankshaft 2, and at least one of the limiting members 13 is used for limiting the other end of the crankshaft 2. Specifically, when the stopper 13 and the crankshaft 2 are engaged with each other for the stopper, the end of the crankshaft 2 and the stopper 13 are inserted into each other. When the tip of bent axle 2 and locating part 13 peg graft each other, the side of locating part 13 shelters from the outer peripheral face of bent axle 2, can realize sheltering from bent axle 2 and box 4 in the radial direction of bent axle 2, and the bottom surface of locating part 13 or the lateral wall of compressor housing 1 shelters from the terminal surface of bent axle 2, can realize sheltering from bent axle 2 and box 4 in the axial direction of bent axle 2. In this way, the crankshaft 2 and the casing 4 can be prevented from wobbling in the compressor housing 1. In this embodiment, only the inner wall of the compressor housing 1 needs to be provided with the limiting member 13 to position the crankshaft 2 and the case 4, the required internal space of the compressor housing 1 will not be increased, the weight of the crankcase case 4 will not be increased, and the compressor housing 1 can realize the limitation of the crankcase under the condition of keeping the volume unchanged.

The compressor in the above-mentioned embodiment, including compressor housing 1 and bent axle 2, compressor housing 1's inner wall is fixed and is provided with locating part 13, and bent axle 2's both ends all extend to the inner wall that is close to compressor housing 1, and it is spacing to utilize bent axle 2's both ends and locating part 13 to peg graft to prevent that bent axle 2 from rocking to compressor housing 1 relatively, thereby can prevent that whole crankcase from rocking to compressor housing 1 relatively. Therefore, the surface of the box body 4 of the crankcase is not required to be provided with a limiting point, and the limitation of the crankshaft 2 can be realized only by arranging the limiting piece 13 on the inner wall of the compressor shell 1, so that the limitation of the crankcase is indirectly realized. Because the case surface of crankcase need not to set up the restriction point to avoid the case 4 surface of crankcase to set up the restriction point and lead to the problem of the increase of box volume, correspondingly, with its complex compressor housing 1's inner space also can not increase, can effectively prevent that the compressor volume is too big.

In one embodiment of the present invention, referring to fig. 3, the crankshaft 2 includes a main shaft 21, an eccentric portion 22 and a secondary shaft 23, the eccentric portion 22 connects the main shaft 21 and the secondary shaft 23, that is, the main shaft 21 and the secondary shaft 23 are respectively connected to two ends of the eccentric portion 22. One end of the main shaft 21, which is far away from the eccentric portion 22, is inserted into one of the limiting members 13, and one end of the auxiliary shaft 23, which is far away from the eccentric portion 22, is inserted into the other limiting member 13. Since the axis of the main shaft 21 and the axis of the auxiliary shaft 23 are overlapped, the line of the two limit pieces 13 corresponding to the main shaft 21 and the auxiliary shaft 23 is parallel to the axis of the main shaft 21. In this embodiment, the axis of the main shaft 21 and the axis of the auxiliary shaft 23 are collectively referred to as the axis of the crankshaft 2. When the crankshaft 2 rotates, the rotation axes of the main shaft 21 and the auxiliary shaft 23 are both the axes of the crankshaft 2, that is, the main shaft 21 and the auxiliary shaft 23 both rotate, and during the rotation, neither the main shaft 21 nor the auxiliary shaft 23 can move radially, and the limiting member 13 may be configured to be matched with the shape of the end of the main shaft 21 or the shape of the end of the auxiliary shaft 23, so as to better limit the position of the main shaft 21 and the auxiliary shaft 23. On the contrary, when the axes of the main shaft 21 and the auxiliary shaft 23 are not coincident, the main shaft 21 and/or the auxiliary shaft 23 do not rotate when the crankshaft 2 rotates, and the limiting member 13 needs to be set to be circular at least at one end of the crankshaft 2, so that the end of the crankshaft 2 cannot be limited well.

As one embodiment of the eccentric portion 22, the eccentric portion 22 is formed by radially protruding a joint of the main shaft 21 and the auxiliary shaft 23. As another embodiment of the eccentric portion 22, referring to fig. 3, the eccentric portion 22 includes a connecting shaft 221 and a connecting rod 222. One end of the connecting shaft 221 is fixedly connected with the main shaft 21, the other end of the connecting shaft 221 is fixedly connected with the auxiliary shaft 23, and the axial direction of the connecting shaft 221 can be parallel to the axial direction of the main shaft 21. One end of the connecting rod 222 is fixed to the connecting shaft 221, and the other end of the connecting rod 222 is connected to the piston 3. The connecting rod 222 can be sleeved on the connecting shaft 221, and the connecting shaft 221 and the connecting rod 222 can be fixed through interference fit of the connecting shaft 221 and the connecting rod 222. When the crankshaft 2 rotates, the connecting shaft 221 drives the connecting rod 222 to rotate, and the connecting rod 222 drives the piston 3 to rotate, so that the piston 3 reciprocates.

In one embodiment of the present invention, referring to fig. 4 and 5, the compressor housing 1 includes an upper shell 11 and a lower shell 12, and the upper shell 11 and the lower shell 12 can be fixedly connected by means of screws, rivets, or the like. The inner wall of the upper shell 11 is at least provided with one limiting piece 13, and the inner wall of the lower shell 12 is at least provided with one limiting piece 13, so that two ends of the crankshaft 2 are respectively limited in the limiting piece 13 of the upper shell 11 and the limiting piece 13 of the lower shell 12. Like this, when assembling the compressor, can install piston 3 on the connecting rod 222 of bent axle 2 earlier, then it is fixed with bent axle 2 and box 4, and place bent axle 2, box 4 and other structure in the inside of inferior valve 12 (epitheca 11), need peg graft the locating part 13 of the tip of bent axle 2 and inferior valve 12 (epitheca 11) this moment, the other end of bent axle 2 exposes, then establish epitheca 11 (inferior valve 12) lid on inferior valve 12 (epitheca 11), when the lid was established, need align the installation with the locating part 13 of the exposed end of bent axle 2 and epitheca 11 (inferior valve 12). In this way, when the stopper 13 is provided in the compressor housing 1, the installation of the internal structure thereof is not hindered, and a certain positioning function can be provided for the installation.

In other embodiments, a plurality of limiting members 13 may be disposed on the inner wall of the upper shell 11, and the limiting members 13 may surround a limiting cavity, so as to limit the end of the crankshaft 2. The inner wall of the lower shell 12 may also be provided with a plurality of limiting members 13, and the plurality of limiting members 13 may be enclosed into a limiting cavity, so as to limit the end of the crankshaft 2.

In one embodiment of the present invention, referring to fig. 6, the compressor housing 1 includes an upper shell 11 and a lower shell 12, and the upper shell 11 and the lower shell 12 can be fixedly connected by means of screws, rivets, or the like. The inner wall of the upper shell 11 close to the lower shell 12 is provided with a first limiting unit 131, the inner wall of the lower shell 12 close to the upper shell 11 is provided with a second limiting unit 132, and the first limiting unit 131 and the second limiting unit 132 jointly form a limiting member 13. For example, the first limiting unit 131 and the second limiting unit 132 are both arc-shaped, and after the upper shell 11 and the lower shell 12 are installed, the first limiting unit 131 and the second limiting unit 132 enclose an arc shape; alternatively, the first and second limiting units 131 and 132 are both L-shaped, and after the upper and lower shells 11 and 12 are mounted, the first and second limiting units 131 and 132 enclose a U-shape. When assembling the compressor, can install piston 3 on connecting rod 222 of bent axle 2 earlier, then it is fixed with bent axle 2 and box 4, and place bent axle 2, box 4 and other structure in the inside of inferior valve 12 (epitheca 11), the both ends of bent axle 2 are inserted respectively and are established in inferior valve 12 (epitheca 11) two relative inboard second spacing unit 132 this moment, then cover epitheca 11 (inferior valve 12) on inferior valve 12 (epitheca 11), after the installation, first spacing unit 131 and second spacing unit 132 enclose and close locating part 13, carry out spacingly respectively to the both ends of bent axle 2. The crankshaft 2 in this embodiment is also easy to mount and does not interfere with the compressor housing 1.

In one embodiment of the present invention, the compressor housing 1 and the stopper 13 are integrally provided. Referring to fig. 4 and 5, when the limiting member 13 is integrally disposed in the upper shell 11 or the lower shell 12 (hereinafter, the limiting member 13 is integrally disposed in the lower shell 12 for illustration), the limiting member 13 and the lower shell 12 may be integrally formed by injection molding or die casting, and the limiting member 13 and the lower shell 12 do not need to be mounted and fixed, thereby reducing the mounting and fixing steps. Referring to fig. 6, the second limiting unit 132 is integrally formed with the lower case 12, and the first limiting unit 131 is integrally formed with the upper case 11, specifically, integrally formed by injection molding or integrally formed by die casting, so that the first limiting unit 131 and the upper case 11 do not need to be mounted and fixed, and the second limiting unit 132 and the lower case 12 do not need to be mounted and fixed, thereby reducing the mounting and fixing steps.

In one embodiment of the present invention, the compressor housing 1 and the limiting member 13 are formed separately and then assembled or fixedly disposed. Referring to fig. 4 and 5, when the limiting member 13 is integrally disposed in the upper shell 11 or the lower shell 12 (the limiting member 13 is integrally disposed in the lower shell 12 for the following description). The limiting piece 13 and the lower shell 12 are fixed with each other by welding; or, the limiting piece 13 is provided with a first clamping structure, the inner wall of the lower shell 12 is provided with a second clamping structure, and the limiting piece 13 and the lower shell 12 are clamped with each other through the first clamping structure and the second clamping structure; or, the limiting member 13 and the lower shell 12 are fixed to each other by inserting. Referring to fig. 6, the second limiting unit 132 is formed separately from the lower shell 12, and the first limiting unit 131 is formed separately from the upper shell 11 (only the second limiting unit 132 is formed separately from the lower shell 12 as an example). The second limiting unit 132 and the lower shell 12 are fixed to each other by welding; or, be provided with first joint structure on the spacing unit 132 of second, the inner wall of inferior valve 12 is provided with second joint structure, and spacing unit 132 of second and inferior valve 12 are through first joint structure and the mutual joint of second joint structure. Or, first spacing unit 131 and epitheca 11 are pegged graft each other fixedly, and second spacing unit 132 and inferior valve 12 are pegged graft each other fixedly, and the grafting direction can be the same with inferior valve 12 and the installation direction of epitheca 11, like this, after epitheca 11 and inferior valve 12 installation, first spacing unit 131 and second spacing unit 132 butt each other, can prevent that first spacing unit 131 and second spacing unit 132 from droing.

In one embodiment of the present invention, referring to fig. 4 to 6, the limiting member 13 is provided with a concave limiting surface 51, the end of the crankshaft 2 is provided with a convex limiting surface 52, and the end of the crankshaft 2 is inserted into the limiting member 13, i.e. the convex limiting surface 52 and the concave limiting surface 51 are matched with each other to limit the end of the crankshaft 2. Referring to fig. 7 and 8, the limiting member 13 is engaged with the inner wall of the compressor housing 1 to form an inward concave limiting surface 51, the end of the shaft has an outward convex limiting surface 52, and the end of the crankshaft 2 is inserted into the limiting member 13, i.e., the outward convex limiting surface 52 and the inward concave limiting surface 51 are engaged with each other to limit the end of the crankshaft 2.

In other embodiments of the present invention, the limiting member 13 is provided with a convex limiting surface 52, the end of the crankshaft 2 is provided with a concave limiting surface 51, and the limiting member 13 is inserted into the end of the crankshaft 2, that is, the convex limiting surface 52 and the concave limiting surface 51 cooperate with each other to limit the end of the crankshaft 2.

In one embodiment of the present invention, the surface of the convex limiting surface 52 or the concave limiting surface 51 is provided with an elastic surface layer, so that when the limiting member 13 is inserted into the end of the crankshaft 2, an elastic surface layer exists between the limiting member 13 and the crankshaft 2, and even if the limiting member 13 collides with the crankshaft 2, a hard collision does not occur, and the elastic surface layer can buffer the collision. When the surface of the convex limiting surface 52 is provided with an elastic surface layer, the surface of the concave limiting surface 51 can also be provided with an elastic surface layer or an elastic bump to further enhance the buffering effect. When the surface of the concave limiting surface 51 is provided with an elastic surface layer, the surface of the convex limiting surface 52 can also be provided with an elastic surface layer or an elastic convex point to further enhance the buffering effect. The elastic surface layer can be made of soft materials such as rubber, silica gel and the like.

In another embodiment of the present invention, the surface of the convex limiting surface 52 or the concave limiting surface 51 is provided with elastic bumps, so as to buffer the collision between the limiting member 13 and the crankshaft 2, and the number and layout of the elastic bumps are not limited herein as long as the crankshaft 2 can be buffered. When the surface of the convex limiting surface 52 is provided with elastic bumps, the surface of the concave limiting surface 51 may be provided with elastic bumps or an elastic surface layer to further enhance the buffering effect. When the surface of the concave limiting surface 51 is provided with elastic bumps, the surface of the convex limiting surface 52 can be provided with elastic bumps or an elastic surface layer to further enhance the buffering effect. The elastic salient points can be extruded and deformed, and can be made of soft materials such as rubber, silica gel and the like.

In another embodiment of the present invention, the compressor further comprises an elastic member, one end of the spring abuts against the convex limiting surface 52, and the other end of the spring abuts against the concave limiting surface 51, so that when the crankshaft 2 rotates, the crankshaft 2 and the casing 4 may shake, and the shake of the crankshaft 2 can be buffered by the deformation of the spring, thereby preventing the crankshaft 2 and the limiting member 13 from being in hard contact. The quantity of spring is two at least, sets up respectively in the relative both sides of bent axle 2, and bent axle 2 no matter rocks to any side and all can be cushioned by the spring. Optionally, one end of the spring is fixed on the crankshaft 2, and the other end of the spring abuts against the limiting member 13; alternatively, one end of the spring is fixed to the stopper 13, and the other end of the spring abuts against the crankshaft 2. Thus, when the crankshaft 2 rotates, the spring is not twisted and bent, and the spring is ensured to be in a normal compression state.

In one embodiment of the present invention, referring to fig. 4 and 5, the convex limiting surface 52 is an arc surface, such as a hemisphere, a semi-ellipsoid, etc. Correspondingly, the concave limiting surface 51 is also arc-shaped. The concave limiting surface 51 is matched with the convex limiting surface 52 in shape, so that the limiting piece 13 can better position the crankshaft 2 and prevent the crankshaft 2 from being too large in oscillation amplitude.

In another embodiment of the present invention, referring to FIG. 7, the convex limiting surface 52 is cubic, i.e. the cross section of the convex limiting surface 52 is rectangular, trapezoidal, etc. Correspondingly, the concave limiting surface 51 is also cuboidal, i.e. the cross section of the concave limiting surface is rectangular, trapezoidal, etc.

In another embodiment of the present invention, referring to FIG. 8, the convex limiting surface 52 is U-shaped, and the concave limiting surface 51 is U-shaped.

It should be noted that the concave limiting surface 51 and the convex limiting surface 52 are in clearance fit, so that the crankshaft 2 can rotate relative to the compressor housing 1, and the limiting member 13 can limit two ends of the crankshaft 2, thereby preventing the crankshaft 2 from shaking excessively.

In one embodiment of the present invention, referring to fig. 4 and 5, when the concave limiting surface 51 is completely disposed on a side of the end portion of the limiting member 13 facing the crankshaft 2, the limiting member 13 can limit the end portion of the crankshaft 2 by itself. In another embodiment of the present invention, referring to fig. 7 and 8, the position-limiting element 13 and the compressor housing 1 enclose an inner concave position-limiting surface 51. In this embodiment, the position limiter 13 comprises a position limiter, and the position limiter and the compressor housing 1 may enclose a receiving cavity for receiving the end of the crankshaft 2. The diapire that should hold the chamber is compressor housing 1's inner wall, and the lateral wall that should hold the chamber is limit baffle's lateral wall promptly. The inner wall of the accommodating cavity is the concave limiting surface 51, that is, the inner wall of the compressor housing 1 and the side wall of the limiting baffle are combined to form the concave limiting surface 51. Specifically, limit baffle is dull and stereotyped or arc form, and limit baffle's quantity is two at least, if two, three, four etc. can form effectual sheltering from to the radial movement of bent axle 2. Or, the limit baffle is annular, and can also form effective shielding for radial movement of the crankshaft 2.

In one embodiment of the present invention, the end of the crankshaft 2 has a concave limiting surface 51, and the concave limiting surface 51 can be directly formed by the end of the crankshaft 2 being concave. Or, a shaft end plate is fixedly arranged at the end part of the crankshaft 2, and the shaft end plate and the crankshaft 2 can be arranged in a split mode. The shaft end plate and the crankshaft 2 may enclose a receiving cavity for receiving the limiting member 13. The bottom wall of the accommodating cavity is an end wall of the crankshaft 2, and the side wall of the accommodating cavity is a side wall of the shaft end plate. The inner wall of the receiving cavity is the concave limiting surface 51, namely the end wall of the crankshaft 2 and the side wall of the shaft end plate are combined to form the concave limiting surface 51. Specifically, the axial end plate is a flat plate or an arc, the number of the axial end plates is at least two, such as two, three, four, etc., and the axial end plates can cooperate with the limiting member 13 to limit the radial movement of the crankshaft 2. Alternatively, the shaft end wall may be annular, and may restrict the radial movement of the crankshaft 2.

In one embodiment of the present invention, referring to fig. 3, the compressor further includes bearings for supporting the crankshaft 2, a housing 4, a piston 3, etc., and the number of the bearings and the position mounted on the crankshaft 2 are not limited herein. For example, the number of bearings is two, and the bearings are provided on the crankshaft 2 at intervals in the axial direction of the crankshaft 2. The eccentric part 22 and the piston 3 of the crankshaft 2 are both arranged in the box body 4, so that the eccentric part 22 and the piston 3 of the crankshaft 2 are protected, the inside of the box body 4 is in a sealed state, and the parts in the box body are convenient to lubricate. The crankshaft 2 penetrates through the box body 4, the box body 4 is fixedly connected with the crankshaft 2, the piston 3 is arranged on the eccentric portion 22 of the crankshaft 2, and when the crankshaft 2 rotates, the eccentric portion 22 of the crankshaft 2 rotates relative to the axis of the crankshaft 2 to drive the piston 3 to rotate relative to the axis of the crankshaft 2, so that reciprocating motion of the piston is achieved. The crankshaft 2 and the box body 4 are in interference fit, and the crankshaft 2 and the box body 4 are fixedly connected.

The invention also provides refrigeration equipment comprising the compressor in any one of the embodiments. The refrigeration equipment can be an air conditioner, a refrigerator, an air cooler and the like.

According to the refrigeration equipment provided by the invention, the limiting pieces 13 are fixedly arranged on the inner wall of the compressor shell 1, the two ends of the crankshaft 2 extend to the positions close to the inner wall of the compressor shell 1, and the two ends of the crankshaft 2 are inserted into the limiting pieces 13 for limiting, so that the crankshaft 2 is prevented from shaking relative to the compressor shell 1, and the whole crankcase can be prevented from shaking relative to the compressor shell 1. Therefore, the surface of the box body 4 of the crankcase is not required to be provided with a limiting point, and the limitation of the crankshaft 2 can be realized only by arranging the limiting piece 13 on the inner wall of the compressor shell 1, so that the limitation of the crankcase is indirectly realized. Because the case surface of crankcase need not to set up the restriction point to avoid the case 4 surface of crankcase to set up the restriction point and lead to the problem of the increase of box volume, correspondingly, with its complex compressor housing 1's inner space also can not increase, can effectively prevent that the compressor volume is too big.

The above description is intended to be illustrative of the preferred embodiment of the present invention and should not be taken as limiting the invention, but rather, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Claims (12)

1. A compressor, characterized by: including compressor housing, locating the inside bent axle of compressor housing, the inner wall of compressor housing is provided with the locating part, the both ends of bent axle are rather than just the locating part is pegged graft and is set up respectively.

2. The compressor as set forth in claim 1, wherein: the crankshaft comprises a main shaft, an eccentric part and an auxiliary shaft which are connected in sequence, the main shaft and the auxiliary shaft are coaxially arranged, and the eccentric part is eccentrically arranged relative to the main shaft.

3. A compressor as set forth in claim 2, wherein: the eccentric part comprises a connecting shaft and a connecting rod sleeved and fixed on the connecting shaft, and two opposite ends of the connecting shaft are fixedly connected with the main shaft and the auxiliary shaft respectively.

4. The compressor as set forth in claim 1, wherein: the limiting piece is provided with an inner concave limiting surface or the limiting piece and the compressor shell are enclosed to form an inner concave limiting surface, the end part of the crankshaft is provided with an outer convex limiting surface, and the outer convex limiting surface is inserted into the inner concave limiting surface; or the limiting part is provided with an outward convex limiting surface, the end part of the crankshaft is provided with an inward concave limiting surface, and the outward convex limiting surface is inserted into the inward concave limiting surface.

5. The compressor as set forth in claim 4, wherein: an elastic surface layer or an elastic salient point is fixed on the surface of the convex limiting surface and/or the concave limiting surface; or a spring is connected between the convex limiting surface and the concave limiting surface in an abutting mode.

6. The compressor of claim 4, wherein: the outer convex limiting surface and the inner concave limiting surface are square, arc-shaped or U-shaped on the longitudinal section of the crankshaft.

7. The compressor as set forth in claim 4, wherein: when the limiting part and the compressor shell are enclosed to form an inwards concave limiting surface, the limiting part comprises a limiting baffle, and the inwards concave limiting surface is enclosed by the inner side wall of the limiting baffle and the inner wall of the compressor shell.

8. The compressor of claim 4, wherein: when the end part of the crankshaft is provided with an inwards concave limiting surface, the end part of the crankshaft is fixedly provided with a shaft end plate, and the inner side wall of the shaft end plate and the end wall of the crankshaft enclose the inwards concave limiting surface.

9. A compressor as set forth in any one of claims 1-8, wherein: the compressor shell comprises an upper shell and a lower shell fixedly connected with the upper shell, at least one limiting piece is fixed on the inner wall of the upper shell, and at least one limiting piece is fixed on the inner wall of the lower shell.

10. A compressor according to any one of claims 1 to 8, wherein: the compressor shell and the limiting piece are integrally formed; or, the compressor housing and the limiting part are formed in a split mode, and the compressor housing is fixedly connected with the limiting part.

11. A compressor according to any one of claims 1 to 8, wherein: the compressor is still including locating box in the compressor housing and by crankshaft drive reciprocating motion's piston, the piston is located in the box, the both ends of bent axle all stretch out the box setting.

12. A refrigeration appliance, characterized by: comprising a compressor according to any one of claims 1-11.

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