阅读说明：本技术 压缩机构、压缩机、制冷循环装置和空调器 (Compression mechanism, compressor, refrigeration cycle device, and air conditioner ) 是由 郑礼成 吴延平 于 2018-08-30 设计创作，主要内容包括：本发明提供了一种压缩机构、压缩机、制冷循环装置和空调器,压缩机构包括：气缸,气缸上由气缸的中心轴线至气缸的外侧壁之间依次设置有滑片槽、安装槽及螺纹孔,滑片槽与安装槽相通,螺纹孔与安装槽相通；阀板,设置在安装槽内；螺纹紧固件,螺纹紧固件与螺纹孔配合连接,并对阀板施加挤压力；其中,螺纹紧固件的中心轴线至滑片槽任一轴向截面的距离,由滑片槽靠近气缸中心轴线的一端至滑片槽远离气缸中心轴线一端逐渐增大。根据本发明的压缩机构,使得螺钉紧固件对阀板的作用力分解为垂直及平行阀板方向的两个作用力,两个作用力产生的变形相互抵消,最终的综合效果使得滑片槽变形大大减小,有效改善了压缩机的可靠性。(The invention provides a compression mechanism, a compressor, a refrigeration cycle device and an air conditioner, wherein the compression mechanism comprises: the air cylinder is provided with a slide sheet groove, a mounting groove and a threaded hole in sequence from the central axis of the air cylinder to the outer side wall of the air cylinder, the slide sheet groove is communicated with the mounting groove, and the threaded hole is communicated with the mounting groove; the valve plate is arranged in the mounting groove; the threaded fastener is matched and connected with the threaded hole and applies extrusion force to the valve plate; the distance from the central axis of the threaded fastener to any axial section of the sliding sheet groove is gradually increased from one end, close to the central axis of the cylinder, of the sliding sheet groove to one end, far away from the central axis of the cylinder, of the sliding sheet groove. According to the compression mechanism provided by the invention, the acting force of the screw fastener on the valve plate is decomposed into two acting forces in the directions vertical to and parallel to the valve plate, the deformations generated by the two acting forces are mutually offset, the final comprehensive effect greatly reduces the deformation of the slide sheet groove, and the reliability of the compressor is effectively improved.)

1. A compression mechanism, comprising:

the air cylinder is provided with a slide sheet groove, a mounting groove and a threaded hole in sequence from the central axis of the air cylinder to the outer side wall of the air cylinder, the slide sheet groove is communicated with the mounting groove, and the threaded hole is communicated with the mounting groove;

the valve plate is arranged in the mounting groove;

the threaded fastener is matched and connected with the threaded hole and applies extrusion force to the valve plate;

the distance from the central axis of the threaded fastener to any axial section of the sliding sheet groove is gradually increased from one end, close to the central axis of the cylinder, of the sliding sheet groove to one end, far away from the central axis of the cylinder, of the sliding sheet groove.

2. The compression mechanism of claim 1,

the range of an included angle between the central axis of the threaded fastener and any axial section of the sliding sheet groove is more than or equal to 15 degrees and less than or equal to 60 degrees.

3. The compression mechanism of claim 1,

the number of the threaded holes is even, and the threaded holes are uniformly distributed on two sides of the sliding sheet groove.

4. The compression mechanism of claim 3,

and along the radial direction of the cylinder, the ratio of the distance between two threaded holes which are positioned at two sides of the sliding sheet groove and are close to the sliding sheet groove to the width of the mounting groove is more than or equal to 0.5.

5. The compression mechanism as claimed in any one of claims 1 to 4, further comprising: the groove is arranged on the cylinder and is positioned at the matching part of the valve plate and the threaded fastener;

the groove is tapered in shape along a radial cross section of the cylinder.

6. The compression mechanism of any one of claims 1-4,

the orientation of valve plate the lateral surface of installing the groove side is formed with the chamfer plane, threaded fastener with the cooperation of chamfer plane is in order to right the extrusion force is exerted to the valve plate.

7. The compression mechanism of claim 6,

the chamfer plane is perpendicular to an axis of the threaded fastener.

8. The compression mechanism as claimed in any one of claims 1 to 4, further comprising: the sliding sheet is slidably arranged in the sliding sheet groove, and a second working cavity is formed between the sliding sheet and the valve plate in the sliding sheet groove.

9. The compression mechanism as claimed in any one of claims 1 to 4, further comprising:

the roller is arranged in a cylinder cavity of the cylinder in a rolling manner, one end of the slide sheet is connected with the roller, and a first working cavity is formed among the inner circumferential surface of the cylinder cavity, the outer circumferential surface of the roller and the slide sheet.

10. A compressor characterized by comprising the compression mechanism as recited in any one of claims 1 to 9.

11. A refrigeration cycle apparatus, comprising:

the compression mechanism of any one of claims 1-9; or

The compressor of claim 10.

12. An air conditioner, comprising: the refrigeration cycle apparatus according to claim 11.

Technical Field

The invention relates to the technical field of refrigeration equipment, in particular to a compression mechanism, a compressor, a refrigeration cycle device and an air conditioner.

Background

In winter, due to large indoor and outdoor temperature difference, the heating capacity of the air conditioning system in a low-temperature environment is greatly reduced, and the requirement of a user for heat cannot be met. The reason is as follows: firstly, in a low-temperature environment, the density of a refrigerant at a suction port of a compressor is low, so that the suction quantity of the refrigerant is reduced, and the heating quantity of an air conditioning system is further influenced; secondly, because the difference between the indoor temperature and the outdoor temperature is large, the difference between the evaporation temperature and the condensation temperature of the air conditioning system is very different, a large amount of gas can be flashed after throttling, so that the refrigerant distribution among different flow paths of the evaporator is uneven, and the heat exchange efficiency of the evaporator is influenced.

In order to solve the problem, in the related art, one way is to apply a gas refrigerant injection manner to a compressor and a refrigeration cycle, and use a double-cylinder rotary compressor. However, the cost of the compressor adopting the double-cylinder type compressor for injection technology is obviously increased, and if the energy efficiency or the heating capacity is not obviously improved, the cost performance is low; the other mode is that independent compression structure has been proposed, increase an independent gleitbretter compression chamber, the second working chamber promptly, inhale the gas of intermediate pressure from the second working chamber, partly expansion work can be retrieved on the one hand, on the other hand has reduced and has got into evaporimeter low pressure refrigerant quality, improve the heat exchange efficiency of evaporimeter, however, independent compression structure valve plate adopts the jackscrew fixed usually at present, the gleitbretter groove deformation often can appear after the jackscrew is tightened, and then lead to the dead problem of gleitbretter card, the reliability of compressor has seriously been influenced.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art or the related art.

To this end, a first aspect of the invention proposes a compression mechanism.

A second aspect of the present invention provides a compressor.

A third aspect of the invention provides a refrigeration cycle apparatus.

A second aspect of the present invention provides an air conditioner.

In view of this, a first aspect of the present invention provides a compression mechanism including: the air cylinder is provided with a slide sheet groove, a mounting groove and a threaded hole in sequence from the central axis of the air cylinder to the outer side wall of the air cylinder, the slide sheet groove is communicated with the mounting groove, and the threaded hole is communicated with the mounting groove; the valve plate is arranged in the mounting groove; the threaded fastener is matched and connected with the threaded hole and applies extrusion force to the valve plate; the distance from the central axis of the threaded fastener to any axial section of the sliding sheet groove is gradually increased from one end, close to the central axis of the cylinder, of the sliding sheet groove to one end, far away from the central axis of the cylinder, of the sliding sheet groove.

According to the compression mechanism, the distance from the central axis of the threaded fastener to any axial section of the slide sheet groove is gradually increased from one end, close to the central axis of the cylinder, of the slide sheet groove to one end, far away from the central axis of the cylinder, of the slide sheet groove, namely the distance is gradually increased from the inner end of the slide sheet groove on one side of the center of the cylinder to the outer end, so that the acting force of the threaded fastener on the valve plate is decomposed into two acting forces in the directions vertical to and parallel to the valve plate, the valve plate is fastened on the installation end face of the installation groove by the acting force in the direction vertical to the valve plate, the slide sheet groove is deformed in the widening direction by the acting force in the direction parallel to the valve plate, the deformations generated by the two acting forces are mutually counteracted, the deformation of the slide sheet groove is greatly reduced by the final comprehensive effect.

In addition, the compression mechanism in the above technical solution provided by the present invention may further have the following additional technical features:

in the above technical solution, preferably, an included angle between a central axis of the threaded fastener and any axial cross section of the slide groove is greater than or equal to 15 ° and less than or equal to 60 °.

In the technical scheme, the value range of the included angle between the central axis of the threaded fastener and any axial section of the sliding sheet groove is set between 15 degrees and 60 degrees, so that the deformation fluctuation of the sliding sheet groove can be reduced, and the running reliability of the compressor is ensured.

In any of the above technical solutions, preferably, the number of the threaded holes is even, and the threaded holes are uniformly distributed on both sides of the slide plate groove.

In this technical scheme, set up the screw hole in slider groove both sides to guarantee the sealed of the installation terminal surface of mounting groove, set up 2 or 4 screw holes usually. When 4 threaded holes are arranged, the positions of the threaded holes respectively correspond to four corner areas of the valve plate, and the threaded fasteners are large in quantity, so that the sealing reliability is good; when setting up 2 screw holes, its position along cylinder chamber axis direction is located the valve plate middle part, because threaded fastener quantity is less relatively, can adopt great diameter and great tightening torque.

In any of the above technical solutions, preferably, in the radial direction of the cylinder, a ratio between a distance between two opposite threaded holes located on both sides of the slide plate groove and near the slide plate groove and a width of the mounting groove is greater than or equal to 0.5.

In the technical scheme, the position of the threaded hole has a large influence on the deformation of the sliding sheet groove, the closer the cylinder threaded hole is to the center of the sliding sheet groove, the farther the equivalent acting force of the threaded fastener to the installation end surface of the installation groove is from the side surface of the installation groove, namely the larger the acting force arm of the acting force is, the larger the deformation of the generated sliding sheet groove is, the sliding sheet groove becomes narrow, it can be seen that along with the increase of the ratio between the distance S between the two threaded holes positioned at the two sides of the sliding sheet groove and the width L of the installation groove, the deformation of the sliding sheet groove is reduced, and when the S/L is larger than or equal to 0.5, the deformation.

In any one of the above technical solutions, preferably, the compression mechanism further includes: the groove is arranged on the cylinder and is positioned at the matching part of the valve plate and the threaded fastener; the groove is conical in shape along the radial section of the cylinder.

In the technical scheme, the contact part of the threaded fastener is provided with a groove with a conical section, and the groove of the conical groove can be only positioned at the part contacted with the threaded fastener and can also penetrate through the valve plate along the central axis direction of the cylinder cavity. Due to the existence of the conical groove, the problem that the acting force perpendicular to the direction of the slide sheet groove is limited by the friction coefficient is solved. Therefore, the deformation of the sliding sheet groove caused by the assembly of the threaded fastener is greatly improved by optimally setting the included angle theta between the central axis of the threaded fastener and the axial interface of the sliding sheet groove.

It should be noted that the cross-sectional shape of the groove along the radial direction of the cylinder may also be set to be square, circular, other cross-sectional shapes formed by straight lines or arc lines, etc., which can achieve the same purpose, and should not be taken as a limitation to the present invention.

In any one of the above technical solutions, preferably, an outer side surface of the valve plate facing the mounting groove side is formed with a chamfered plane, and the threaded fastener is engaged with the chamfered plane to apply the pressing force to the valve plate.

In any of the above solutions, preferably, the chamfer plane is perpendicular to the axis of the threaded fastener.

In the technical scheme, the contact position of the threaded fastener is arranged on a chamfer plane formed by the edges of the two sides of the slide sheet groove on the outer side surface of the valve plate, and the chamfer plane is vertical to the axis of the threaded fastener, so that the pretightening force of the threaded fastener is ensured to be always along the axis direction of the threaded fastener.

In any one of the above technical solutions, preferably, the compression mechanism further includes: the sliding sheet is slidably arranged in a sliding sheet groove, and a second working cavity is formed between the sliding sheet and the valve plate in the sliding sheet groove.

In any one of the above technical solutions, preferably, the compression mechanism further includes:

the roller can be arranged in a cylinder cavity of the cylinder in a rolling manner, one end of the slide sheet is connected with the roller, and a first working cavity is formed among the inner circumferential surface of the cylinder cavity, the outer circumferential surface of the roller and the slide sheet.

In the technical scheme, the sliding sheet can slide inside and outside in the sliding sheet groove, the roller is sleeved on the eccentric part of the crankshaft and can eccentrically rotate along with the rotation of the crankshaft, in addition, the roller can also rotate around the axis of the roller, and the inner end of the sliding sheet is propped against the roller. A first working cavity is formed among the inner circumferential surface of the cylinder cavity, the outer circumferential surface of the roller and the sliding sheet, and the upper end surface and the lower end surface of the first working cavity are sealed by an upper bearing and a lower bearing. The first working cavity and the first suction hole are connected to form a first suction cavity, and the first working cavity and the first exhaust hole are connected to form a first compression cavity. Along with the rotation of bent axle, first suction cavity volume constantly increases to constantly inhale the refrigerant, first compression chamber volume constantly reduces, and intracavity refrigerant pressure constantly risees, backs down first exhaust valve block when reaching the exhaust pressure, discharges the high-pressure refrigerant from first exhaust port, and first stopper restricts the lift of first exhaust valve block, prevents reliability problems such as fracture.

A second working cavity is formed between the sliding sheet and the valve plate in the sliding sheet groove, and the upper end face and the lower end face of the second working cavity are sealed by an upper bearing and a lower bearing. The inner end of the sliding sheet is connected with the roller in a hinged mode, so that the sliding sheet and the roller are prevented from being separated under any condition, and the sliding sheet does linear reciprocating motion in the sliding sheet groove along with the rotation of the crankshaft. When the sliding sheet moves inwards (towards the axis of the cylinder cavity), the volume of the second working cavity is increased, the air suction valve plate is opened to a certain degree, and an intermediate pressure refrigerant (the pressure is higher than the air suction pressure of the first working cavity) is sucked; when the sliding sheet moves outwards (away from the axis of the cylinder cavity), the volume of the second working cavity is reduced, the refrigerant is compressed, the pressure is continuously increased, the second exhaust valve plate is pushed open when the exhaust pressure is reached, the high-pressure refrigerant is exhausted from the second exhaust port, and similarly, the second limiter limits the lift range of the second exhaust valve plate. Through adopting two working chamber structures, promote the work efficiency of compressor to promote the user and experience the use of air conditioner.

A second aspect of the present invention provides a compressor including the compression mechanism according to any one of the above aspects.

The compressor provided by the invention comprises the compression mechanism in any technical scheme, so that the compressor has all the beneficial effects of the compression mechanism, and is not repeated herein.

A third aspect of the present invention provides a refrigeration cycle apparatus comprising: the compression mechanism of any one of the above technical solutions; or a compressor as in the above solutions.

The refrigeration cycle device provided by the invention comprises the compression mechanism in any technical scheme or the compressor in the technical scheme, so that the refrigeration cycle device has all the beneficial effects of the compression mechanism and the compressor, and is not repeated herein.

A third aspect of the present invention provides an air conditioner comprising: the refrigeration cycle device according to the above-described aspect.

The air conditioner provided by the invention comprises the refrigeration cycle device in the technical scheme, so that the air conditioner has all the beneficial effects of the refrigeration cycle device, and the details are not repeated.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic view of a conventional independent compression structure of a working chamber and a valve plate;

FIG. 2 is a sectional view in a height direction of a conventional independent compression structure;

FIG. 3 is a schematic illustration of the deformation of a slide groove of a conventional valve plate fixing structure;

FIG. 4 is a schematic structural view of a compression mechanism according to one embodiment of the present invention;

FIG. 5 is an explanatory view of an improvement principle of the compression mechanism of the embodiment shown in FIG. 4;

FIG. 6 is a schematic view of the slide groove deformation versus the included angle θ;

FIG. 7 is a schematic view of a slider groove deformation-cylinder threaded hole distance S/cylinder mounting groove width L curve;

FIG. 8 is a schematic structural view of a compression mechanism according to yet another embodiment of the present invention;

FIG. 9 is a schematic structural view of a compression mechanism according to yet another embodiment of the present invention;

fig. 10 is a schematic structural view of a refrigeration cycle apparatus according to an embodiment of the present invention.

Wherein, the correspondence between the reference numbers and the component names in fig. 1 to 3 is:

the pneumatic control valve comprises a 1 'cylinder, a 2' crankshaft, a 3 'roller, a 4' sliding sheet, a 42 'sliding sheet groove, a 5' upper bearing, a 6 'lower bearing, a 7' threaded hole, an 8 'mounting groove, a 82' valve plate, a 9 'suction valve plate, a 10' second working chamber, a 11 'first suction hole, a 12' first exhaust hole, a 14 'second limiter, a 15' second exhaust valve plate, a 16 'second exhaust hole and a 17' jackscrew.

The correspondence between reference numerals and part names in fig. 4 to 10 is:

1 cylinder, 12 sliding sheet grooves, 122 sliding sheets, 14 mounting grooves, 142 valve plates, 144 suction valve sheets, 146 grooves, 148 chamfer planes, 16 threaded holes, 162 threaded fasteners, 18 first suction holes, 10 first working chambers, 20 second working chambers, 30 compressors, 40 four-way valves, 50 outdoor heat exchangers, 60 first throttling elements, 70 flash evaporators, 80 second throttling elements and 90 indoor heat exchangers.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

The compression mechanism, the compressor, the refrigeration cycle device, and the air conditioner according to some embodiments of the present invention are described below with reference to fig. 4 to 10.

As shown in fig. 4 to 9, an embodiment of the present invention provides a compression mechanism including: the air cylinder comprises an air cylinder 1, wherein a slide sheet groove 12, a mounting groove 14 and a threaded hole 16 are sequentially arranged between the central axis of the air cylinder 1 and the outer side wall of the air cylinder 1 on the air cylinder 1, the slide sheet groove 12 is communicated with the mounting groove 14, and the threaded hole 16 is communicated with the mounting groove 14; a valve plate 142 disposed in the mounting groove 14; the threaded fastener 162, the threaded fastener 162 is matched and connected with the threaded hole 16, and applies extrusion force to the valve plate 142; the distance from the central axis of the threaded hole 16 of the threaded fastener 162 to any axial section of the slide plate groove 12 gradually increases from the end of the slide plate groove 12 close to the central axis of the cylinder 1 to the end of the slide plate groove 12 far away from the central axis of the cylinder 1.

According to the compression mechanism of the invention, the distance from the central axis of the threaded hole 16 of the threaded fastener 162 to any axial section of the slide plate groove 12 is set to gradually increase from one end of the slide plate groove 12 close to the central axis of the cylinder 1 to one end of the slide plate groove 12 far away from the central axis of the cylinder 1, namely, the distance gradually increases from the inner end of the slide plate groove 12 at the side of the center of the cylinder 1 to the outer end, so that the acting force of the threaded fastener on the valve plate 142 is decomposed into two acting forces in the directions vertical to and parallel to the valve plate 142, the acting force in the direction vertical to the valve plate 142 fastens the valve plate 142 on the mounting end surface of the mounting groove 14 and deforms the slide plate groove 12 in the direction of narrowing, the acting force in the direction parallel to the valve plate 142 generates a reaction force on the cylinder 1, the slide plate groove 12 deforms in the direction of widening, the, the reliability of the compressor is effectively improved.

In some embodiments of the present invention, the threaded fastener 162 employs a jackscrew.