CN203500009U

CN203500009U - Rotary compressor

Info

Publication number: CN203500009U
Application number: CN201320507499.6U
Authority: CN
Inventors: 江波; 梅佩佩
Original assignee: Guangdong Meizhi Compressor Co Ltd
Current assignee: Guangdong Midea Toshiba Compressor Corp; Guangdong Meizhi Compressor Co Ltd
Priority date: 2013-08-19
Filing date: 2013-08-19
Publication date: 2014-03-26
Anticipated expiration: 2023-08-19

Abstract

The utility model discloses a rotary compressor. The rotary compressor comprises a shell, a compression device, a motor, an upper cover, a lower cover and an exhaust channel, wherein the compression device is arranged in the shell and provided with a compression chamber, the motor is arranged in the shell and positioned above the compression device, a gap is reserved between the motor and the inner wall of the shell, the upper cover is arranged at the top of the motor, the lower cover is arranged at the bottom of the motor and communicated with the gap, a through hole is formed in the bottom of the lower cover, and two ends of the exhaust channel are respectively communicated with the compression chamber and the upper cover. According to the rotary compressor disclosed by the utility model, by arranging the upper cover and the lower cover at the top and the bottom of the motor respectively, a refrigerant passes through the motor twice, so that heat exchange is sufficient, a cooling effect of the motor is enhanced so as to improve the reliability and efficiency of the motor, moreover, a lubricating oil separation channel is correspondingly lengthened, and most of lubricating oil can return to an oil storage chamber, so that oil spitting amount at an exhaust port is very small, and proper amount of oil can be maintained in the oil storage chamber usually.

Description

Rotary compressor

Technical field

The utility model relates to art of refrigeration units, especially relates to a kind of rotary compressor.

Background technique

In traditional rotary compressor, if the heat exchange between the refrigerant of discharging in compression set and motor winding is not enough, because motor winding is overheated, not only can cause motor winding scaling loss, also can cause electric efficiency to reduce.

The cold media air of discharging in traditional rotary compressor compression set can with compression set in lubricant oil and the lubricant oil in housing oil sump mix discharge compressor, tell when oil mass is obvious to be increased, pasta also there will be the phenomenon of reduction, not only make compressor produce fault, also can reduce the performance of heat exchanger.In addition, the cold media air of discharging in traditional rotary compressor compression set directly contacts with shoe cream room, produces the oily degree of superheat not enough, and due to the dilution of condensed refrigerant in oil, oil viscosity can obviously reduce, and this phenomenon can cause the wear-out failure of compressor.

Model utility content

The utility model is intended at least solve one of technical problem existing in prior art.For this reason, to be to propose a kind of electric efficiency high and tell the rotary compressor that oil mass reduces, reliability is high for an object of the present utility model.

According to rotary compressor of the present utility model, comprising: housing; Compression set, described compression set is located in described housing and has compression chamber; Motor, described motor is located in described housing and is positioned at the top of described compression set, between described motor and the inwall of described housing, has gap; Upper cover, described upper cover is located at the top of described motor; Lower cover, described lower cover is located at the bottom of described motor and communicates with described gap, and the bottom of described lower cover is formed with through hole; Exhaust passage, the two ends of described exhaust passage communicate with described compression chamber and described upper cover respectively.

According to rotary compressor of the present utility model, by the top at motor and bottom, upper cover and lower cover are set respectively, the refrigerant of discharging from compression chamber enters the staor winding of all flowing through upper cover downwards, then the exhaust ports that flow to case top from trimming portion and the gap between the inwall of housing of stator iron core, twice process motor of refrigerant, heat exchange is abundant, the cooling effect of motor is strengthened, thereby reliability and the efficiency of motor have been improved, and the passage of lubricating oil separation is also correspondingly elongated, most lubricant oil can be got back to shoe cream room, thereby relief opening tell oil mass seldom, shoe cream room can maintain suitable oil mass conventionally.

And, because the low temperature refrigerant of discharging from compression chamber flows into upper cover, then discharges inflow lower cover downwards, refrigerant does not directly contact with the lubricant oil of shoe cream room, the lubricated impact that has the refrigerant that can directly do not discharged of shoe cream room, is improved so oil body reduces the integrity problem bringing.

Alternatively, on described, cover be formed with the perforation that runs through so that the lead-in wire of described motor through.Thus, by perforation is set, the lead-in wire of motor can be connected with the tenminal block of case top through this perforation.

Further, the described through hole of described upper cover is provided with insulating bushing.

Alternatively, described upper cover screw connects or is bonded to described motor.Thus, upper cover can be connected on motor securely.

Or alternatively, described top cap is connected to described housing.

Preferably, the part edge of described lower cover extends to the inwall of housing, and another part edge screw connects or is bonded to described motor.

Further, the roof of described upper cover and the top of described motor, the diapire of described lower cover and the bottom of described motor are spaced apart from each other.

Alternatively, described upper cover and described lower cover are synthetic resin part.

Alternatively, described exhaust passage is limited by the exhaust manifolds that are located at outside described housing.

Or alternatively, described compression set comprises bent axle, the upper end of described bent axle is connected with described motor and lower end is stretched in described compression chamber, and described exhaust passage is formed in described bent axle.

Additional aspect of the present utility model and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present utility model.

Accompanying drawing explanation

Above-mentioned and/or additional aspect of the present utility model and advantage accompanying drawing below combination obviously and is easily understood becoming embodiment's description, wherein:

Fig. 1 is according to the schematic diagram of an embodiment's of the utility model rotary compressor;

Fig. 2 is the sectional drawing along A-A line in Fig. 1;

Fig. 3 is the sectional drawing along B-B line in Fig. 1;

Fig. 4 is according to the schematic diagram of the upper cover of an embodiment's of the utility model rotary compressor;

Fig. 5 is according to the schematic diagram of the lower cover of an embodiment's of the utility model rotary compressor.

Description of reference numerals:

100: rotary compressor;

1: housing; 11: shoe cream room; 12: relief opening; 13: tenminal block;

21: main bearing; 211: exhaust port; 22: cylinder; 221: compression chamber;

23: supplementary bearing; 24: piston; 25: slide plate;

26: baffler; 27: bent axle;

31: stator; 311: stator iron core; 3111: trimming portion;

312: staor winding;

32: rotor; 33: gap; 331: the first gaps; 332: the second gaps;

4: upper cover; 41: the first installation feet; 42: insulating bushing;

5: lower cover; 51: the second installation feet; 52: through hole; 6: exhaust manifolds.

Embodiment

Describe embodiment of the present utility model below in detail, described embodiment's example is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Below by the embodiment who is described with reference to the drawings, be exemplary, only for explaining the utility model, and can not be interpreted as restriction of the present utility model.

In description of the present utility model, it will be appreciated that, orientation or the position relationship of the indications such as term " " center ", " laterally ", " on ", D score, " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", " outward " be based on orientation shown in the drawings or position relationship; be only the utility model and simplified characterization for convenience of description; rather than the device of indication or hint indication or element must have specific orientation, with specific orientation structure and operation, so can not be interpreted as restriction of the present utility model.In addition, term " first ", " second " be only for describing object, and can not be interpreted as indication or hint relative importance or the implicit quantity that indicates indicated technical characteristics.Thus, one or more these features can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ".In description of the present utility model, except as otherwise noted, the implication of " a plurality of " is two or more.

In description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be mechanical connection, can be to be also electrically connected to; Can be to be directly connected, also can indirectly be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, can concrete condition understand the concrete meaning of above-mentioned term in the utility model.

Below with reference to Fig. 1-Fig. 5, describe according to the utility model embodiment's rotary compressor 100, rotary compressor 100 can be even multi-cylinder rotary compressor of single cylinder, twin-tub.In description below the application, the rotary compressor 100 of take describes as single cylinder rotary compressor as example.

As shown in Figure 1, according to the utility model embodiment's rotary compressor 100, comprise housing 1, compression set, motor, upper cover 4, lower cover 5 and exhaust passage.

Compression set is located in housing 1.With reference to Fig. 1, in housing 1, limit holding space, compression set is located at the bottom of holding space, compression set can be fixedly connected on the inwall of housing 1, the top of housing 1 is formed with relief opening 12, and the refrigerant after compression set compression can be discharged by the relief opening 12 at housing 1 top, and the bottom of housing 1 has shoe cream room 11, shoe cream room 11 is positioned at the bottom of compression set, in shoe cream room 11, encloses lubricant oil.

Compression set has compression chamber 221.For example, in the example of Fig. 1, compression set comprises cylinder 22, main bearing 21, supplementary bearing 23, piston 24 and slide plate 25, particularly, cylinder 22 can form all unlimited cylindrical shapes of top and bottom, on cylinder 22, be formed with slide plate 25 grooves that radially extend along it, main bearing 21 and supplementary bearing 23 are located at respectively top and the bottom of cylinder 22, main bearing 21, supplementary bearing 23 and cylinder 22 limit compression chamber 221 jointly, piston 24 is located in compression chamber 221 prejudicially, and the inwall along compression chamber 221 can roll, slide plate 25 is located in slide plate 25 grooves movably, for example slide plate 25 is located in slide plate 25 grooves movably by spring, one end of slide plate 25 is stretched in compression chamber 221 and is only supported piston 24.Further, on main bearing 21, be arranged with baffler 26.

Motor is located in housing 1, and motor is positioned at the top of compression set, between motor and the inwall of housing 1, has gap 33.As shown in Figure 1-Figure 3, motor is located in holding space and is positioned at the top of compression set, motor comprises stator 31 and rotor 32, the periphery of stator 31 can be fixedly connected on the inwall of housing 1, rotor 32 is located in stator 31 rotationally, stator 31 comprises staor winding 312 and stator iron core 311, the periphery wall of stator iron core 311 is provided with a plurality of trimming portion 3111, the week that a plurality of trimming portion 3111 can be evenly distributed in stator iron core 311 upwards, each trimming portion 3111 is formed by a part for the parallel plane excision stator iron core 311 of the central axis with stator iron core 311, between each trimming portion 3111 and the inwall of housing 1, limit gap 33.Alternatively, motor is electrodynamic machine.It will be appreciated that, the quantity of trimming portion 3111 and size can be according to actual requirement settings, to meet better actual requirement.

Upper cover 4 is located at the top of motor.Lower cover 5 is located at the bottom of motor and communicates with gap 33.The two ends of exhaust passage communicate with compression chamber 221 and upper cover 4 respectively.With reference to Fig. 1, upper cover 4 is connected to the top of motor, and lower cover 5 is connected to the bottom of motor, the space forming between the roof of the top of upper cover 4 and housing 1 is MH chamber, the space forming between the bottom of lower cover 5 and compression set is ML chamber, ML chamber is connected with shoe cream room 11, and the lower end of exhaust passage is connected with compression chamber 221, and upper end is connected with the inside of upper cover 4.

In compression chamber 221, the high pressure refrigerant after compression can enter in upper cover 4 by exhaust passage like this, then, high pressure refrigerant through the gap of the staor winding 312 of the stator 31 of motor and the gap between rotor 32 and stator 31 to downstream in lower cover 5, then, high pressure refrigerant upwards flow to MH chamber by the gap 33 between the trimming portion 3111 of stator iron core 311 and the inwall of housing 1, finally from the relief opening 12 at housing 1 top, discharges.Owing to inevitably containing lubricant oil the refrigerant of discharging from compression set, the mixed gas of refrigerant and the lubricant oil gap 33 between the inwall of upper cover 4, motor, lower cover 5, trimming portion 3111 and housing 1 of flowing through, discharge housing 1, longer refrigerant passage is conducive to the separation of lubricant oil again.

The bottom of lower cover 5 is formed with through hole 52.With reference to Fig. 5, through hole 52 runs through the bottom of lower cover 5 along the vertical direction, through hole 52 is communicated with inside and the ML chamber of lower cover 5, it is enough little that the area of through hole 52 can arrange, for example can be much smaller than the cross-section area in the gap 33 between the trimming portion 3111 of stator iron core 311 and the inwall of housing 1, pass through like this lubricant oil of staor winding 312 separation, under the effect of gravity, drop onto on lower cover 5, through the through hole 52 on lower cover 5, get back to shoe cream room 11, because it is enough little that through hole 52 is opened, thereby refrigerant can be expelled to MH chamber from the larger gap 33 of cross-section area, and can not leak to ML chamber from through hole 52.

According to the utility model embodiment's rotary compressor 100, by the top at motor and bottom, upper cover 4 and lower cover 5 are set respectively, the refrigerant of discharging from compression chamber 221 enters the staor winding 312 of all flowing through upper cover 4 downwards, then from the gap 33 between the trimming portion 3111 of stator iron core 311 and the inwall of housing 1, flow to the relief opening 12 at housing 1 top, twice process motor of refrigerant, heat exchange is abundant, the cooling effect of motor is strengthened, thereby improved reliability and the efficiency of motor.

And, because the low temperature refrigerant of discharging from compression chamber 221 is to flow into upper cover 4, then flow into discharge lower cover 5 downwards, refrigerant does not directly contact with the lubricant oil of shoe cream room 11, the lubricated impact that has the refrigerant that can directly do not discharged of shoe cream room 11, is improved so oil body reduces the integrity problem bringing.

In an embodiment of the present utility model, on upper cover 4, be formed with the perforation that runs through so that the lead-in wire of motor through.As shown in Figure 4, perforation runs through upper cover 4 along the vertical direction, and the lead-in wire of the staor winding 312 of the stator 31 of motor can be connected with the tenminal block 13 at housing 1 top through this perforation like this.Alternatively, perforation is shaped as circle, ellipse, long-round-shape or polygonal etc.

Further, through hole 52 places of upper cover 4 are provided with insulating bushing 42.With reference to Fig. 4, insulating bushing 42 is through the through hole 52 of upper cover 4, on insulating bushing 42, be formed with the via hole running through along the vertical direction, the lead-in wire of staor winding 312 can be connected with the tenminal block 13 at housing 1 top through this via hole, alternatively, the height of insulating bushing 42 on above-below direction is greater than the thickness of upper cover 4 diapires.

Alternatively, upper cover 4 screws connect or are bonded to motor.That is to say, the mode that upper cover 4 can be connected by screw is connected to motor, or is connected to motor by bonding mode.

For example, in the example of Fig. 2, the cross-section area of upper cover 4 is greater than the maximum cross-section area of staor winding 312, and be less than the cross-section area of the incircle tangent with stator iron core 311, like this upper cover 4 be difficult for and the trimming portion 3111 of stator iron core 311 and the inwall of housing 1 between gap 33 interfere.

Further, as shown in Figure 2, the edge of upper cover 4 is provided with the first installation foot 41, the first installation foot 41 radially horizontally outward extends, on the first installation foot 41, be formed with the first mounting hole running through, screw can pass the first mounting hole, the stator 31 of the first installation foot 41, thereby upper cover 4 is connected on motor.Further, the first installation foot 41 is that two and two the first installation feet 41 are located on the radially relative edge of upper cover 4.Alternatively, the first installation foot 41 can be one-body molded with upper cover 4.When being installed, upper cover 4 should be noted that the lower end surface of upper cover 4 does not interfere with the gap 33 of stator iron core 311 peripheries.It will be appreciated that, the quantity of the first installation foot 41 can be according to actual requirement setting, so that upper cover 4 is connected on motor securely.

Certainly, the utility model is not limited to this, and in another example of the present utility model, upper cover 4 can directly utilize high temperature resistant viscose glue to be fixedly connected on the stator 31 of motor.

Or alternatively, upper cover 4 is connected to housing 1.Now upper cover 4 can be pressed on the inwall that is fixedly connected on housing 1.Here, it should be noted that, the orthographic projection of joint upper cover 4 and housing 1 inwall on stator iron core 311 can be between two adjacent trimming portions 3111, to avoid interfering with the gap 33 between the trimming portion 3111 of stator iron core 311 and the inwall of housing 1.

Preferably, the part edge of lower cover 5 extends to the inwall of housing 1, and another part edge screw connects or is bonded to motor.With reference to Fig. 3, the left-half edge of lower cover 5 extends out to the inwall of housing 1 and links together along the radial level of housing 1, the right half part edge of lower cover 5 is provided with the second installation foot 51 horizontally outward extending, the second installation foot 51 is between two adjacent trimming portions 3111, on the second installation foot 51, be formed with the mounting hole running through, screw can pass mounting hole, stator iron core 311, thereby lower cover 5 is arranged on motor securely, or the right half part of lower cover 5 directly utilize high temperature resistant viscose glue be fixed on stator 31 below.Here, it should be noted that, direction " outward " can be understood as the direction away from housing 1 center, and its opposite direction is defined as " interior ", towards the direction at housing 1 center.

In this way, lower cover 5 is divided into the gap 33 that is provided in stator 31 peripheries in the first gap 331(example gap, left side being as shown in Figure 1 and Figure 3 connected with lower cover 5) and the second gap 332(example gap, right side as shown in Figure 1 and Figure 3 of being connected with ML chamber), refrigerant in lower cover 5 all enters MH chamber from the first gap 331 like this, and discharge housing 1 by relief opening 12, in the second gap 332 owing to there is no upward flow, without the lubricant oil of motor separation along with refrigerant enters behind MH chamber, the overwhelming majority can flow back to shoe cream room 11 from the second gap 332.

Because the oil mass of telling of rotary compressor 100 tails off, be conducive to the stability of guarantor's oil mass of shoe cream room 11, therefore, can improve the integrity problem that low on fuel causes.

Further, the roof of upper cover 4 and the top of motor, the diapire of lower cover 5 and the bottom of motor are spaced apart from each other.That is to say the top of the staor winding 312 of the roof of upper cover 4 and the stator of motor 31 spaced apart certain distance on above-below direction, the bottom of the staor winding 312 of the diapire of lower cover 5 and the stator of motor 31 spaced apart certain distance on above-below direction.

Alternatively, upper cover 4 and lower cover 5 are synthetic resin part.In other words, upper cover 4 and lower cover 5 use have considered that electric insulation, cold-resistant matchmaker, oil resistant, heat-resisting etc. the materials such as synthetic resin carry out moulding, for example can use PBT(polybutylene-terephthalate), it is a kind of thermoplasticity saturated polyester, this material can contact staor winding 312.In addition, even the metallic material such as steel plate, so long as staor winding 312 has been implemented to the material of insulation processing, or can guarantee and staor winding 312 between guarantee that the material in the gap that regulation is above just can be used.

Alternatively, exhaust passage is limited by the exhaust manifolds 6 that are located at outside housing 1.For example, in the example of Fig. 1, the lower end of exhaust manifolds 6 is connected with main bearing 21, upper end is connected with upper cover 4, the exhaust port 211 of high pressure refrigerant after compressing in compression chamber 221 like this from main bearing 21 is through the baffler 26 of upper end, by being arranged on the exhaust manifolds 6 on main bearing 21, be expelled in upper cover 4 again.Then, high pressure refrigerant, through the gap of the gap of staor winding 312 and the periphery of rotor 32 and stator 31, flow in lower cover 5, afterwards, high pressure refrigerant, through the trimming portion 3111 of stator iron core 311 and the gap 33 between housing 1 inwall, flow to MH chamber, finally from relief opening 12, discharges housing 1.Certainly, the utility model is not limited to this, and in other examples of the present utility model, exhaust manifolds 6 can also be arranged on baffler 26 (schemes not shown).

Compression set comprises bent axle 27, and the upper end of bent axle 27 is connected with motor, and the lower end of bent axle 27 is stretched in compression chamber 221.With reference to Fig. 1, bent axle 27 is driven and is rotated by motor, and bent axle 27 bottoms are provided with eccentric part, and eccentric part drives piston 24 in the interior rolling of compression chamber 221.

Or alternatively, exhaust passage is formed in bent axle 27 (scheming not shown).The two ends of the exhaust passage in bent axle 27 can be connected with the inside of compression chamber 221 and upper cover 4 respectively, and the refrigerant of discharging from compression chamber 221 like this can enter upper cover 4 exhaust passage in bent axle 27.

According to the utility model embodiment's rotary compressor 100, housing 1, compression set and motor etc. can be used former styles design, thereby are convenient to batch production.In addition, this rotary compressor 100 can be widely used in and carry the air conditioner of rotary compressor 100, freezing machine, water heater etc.

In the description of this specification, the description of reference term " embodiment ", " some embodiments ", " illustrative examples ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present utility model or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And the specific features of description, structure, material or feature can be with suitable mode combinations in any one or more embodiments or example.

Although illustrated and described embodiment of the present utility model, those having ordinary skill in the art will appreciate that: in the situation that not departing from principle of the present utility model and aim, can carry out multiple variation, modification, replacement and modification to these embodiments, scope of the present utility model is limited by claim and equivalent thereof.

Claims

1. a rotary compressor, is characterized in that, comprising:

Housing;

Compression set, described compression set is located in described housing and has compression chamber;

Motor, described motor is located in described housing and is positioned at the top of described compression set, between described motor and the inwall of described housing, has gap;

Upper cover, described upper cover is located at the top of described motor;

Lower cover, described lower cover is located at the bottom of described motor and communicates with described gap, and the bottom of described lower cover is formed with through hole;

Exhaust passage, the two ends of described exhaust passage communicate with described compression chamber and described upper cover respectively.

2. rotary compressor according to claim 1, is characterized in that, cover on described be formed with the perforation that runs through so that the lead-in wire of described motor through.

3. rotary compressor according to claim 2, is characterized in that, the described through hole of described upper cover is provided with insulating bushing.

4. according to the rotary compressor described in any one in claim 1-3, it is characterized in that, described upper cover screw connects or is bonded to described motor.

5. according to the rotary compressor described in any one in claim 1-3, it is characterized in that, described top cap is connected to described housing.

6. rotary compressor according to claim 1, is characterized in that, the part edge of described lower cover extends to the inwall of housing, and another part edge screw connects or is bonded to described motor.

7. rotary compressor according to claim 1, is characterized in that, the roof of described upper cover and the top of described motor, the diapire of described lower cover and the bottom of described motor are spaced apart from each other.

8. rotary compressor according to claim 1, is characterized in that, described upper cover and described lower cover are synthetic resin part.

9. rotary compressor according to claim 1, is characterized in that, described exhaust passage is limited by the exhaust manifolds that are located at outside described housing.

10. rotary compressor according to claim 1, is characterized in that, described compression set comprises bent axle, and the upper end of described bent axle is connected with described motor and lower end is stretched in described compression chamber, and described exhaust passage is formed in described bent axle.