CN103807177A

CN103807177A - Rotary compressor

Info

Publication number: CN103807177A
Application number: CN201210448717.3A
Authority: CN
Inventors: 孟亮
Original assignee: Guangdong Meizhi Compressor Co Ltd
Current assignee: Guangdong Midea Toshiba Compressor Corp; Guangdong Meizhi Compressor Co Ltd
Priority date: 2012-11-09
Filing date: 2012-11-09
Publication date: 2014-05-21
Anticipated expiration: 2032-11-09
Also published as: CN103807177B

Abstract

The invention is applicable to the technical field of compressors, and provides a rotary compressor which comprises a shell as well as a compression mechanism and a motor arranged in the shell, wherein the motor comprises a stator fixed on the shell and a rotor arranged in the center of the stator; a ventilation notch penetrating between the above and below of the motor is formed in the shell; and a guide baffle is arranged above the ventilation notch. So, an oil-gas mixture is blocked by the guide baffle when going through the ventilation notch and moving toward an exhaust pipe, and the flow direction is changed; since the inertia of the oil drop particles is greater than that of the gas, multiple oil drop particles hit against and are adsorbed on the guide baffle or the wall surface close to the shell and are separated from the oil-gas mixture, thereby effectively improving the oil-gas separation efficiency, improving the oil output of the compressor and achieving the aims of reducing the oil discharge and exhaust resistance of the compressor; and moreover, the rotary compressor provided by the invention also has the advantages of simple structure, reliable work and wide applicability.

Description

Rotary compressor

Technical field

The invention belongs to compressor production technical field, more particularly, relate to a kind of rotary compressor.

Background technique

Due to the needs of performance and reliability, in compressor, there is a certain amount of lubricant oil, for lubricating of each friction pair.But because refrigerant directly contacts with lubricant oil, therefore have a certain amount of oil droplet and mix with refrigerant, follow refrigerant to flow together, and finally taken out of compressor, form and tell oily phenomenon.Larger tell oil mass and not only can reduce the efficiency of air-conditioning system, and the reliability of compressor is also had to adverse effect.

Existing rotary compressor structural representation as shown in Figure 1, rotary compressor comprises the compressor 2' and the motor that are arranged in housing 1', motor comprises that being fixed on housing 1' goes up stator 3' and the rotor 4' at stator 3 ' center rotating, and stator itself has or form with inner walls face the ventilation breach 5' that upper and lower end face is communicated with, compressing mechanism 2 ' with rotor 4 ' be fixed together, and under the drive of rotor 4', refrigerant is carried out to the working procedure such as air-breathing, compression, exhaust.Lubricant oil is stored in the bottom of housing 1', and directly contacts with compressing mechanism 2'.Due to reasons such as leakage, gas shocks, in the time that pressurized gas are discharged from compressing mechanism 2', can carry more oil particles.This gas mixture by motor ventilate breach 5' from bottom upwards flow, by be arranged on housing 1' top outlet pipe 6' flow out compressor.

In order to reduce the discharge capacity of lubricant oil, the method of the pure filtration of some employings, as China Patent Publication No. CN1205055 discloses a kind of compressor oil separator on January 13rd, 1999, this oil separator has and weaves the net body portion forming with metal fine, form on the surface of described metal fine that forms this net body portion can improve catch oiliness can jog.The method has special requirement to material and structure, and manufacturing and cost requirement are higher, and the ill-effect that can bring exhaust resistance to increase; The method separating is forced in some employing rotations, but has the shortcoming that can consume more rotational energy so again.

Summary of the invention

Technical problem to be solved by this invention is to overcome the deficiency of prior art, and a kind of simple in structure, oil-gas separation efficiency is high, gas-flow resistance is little rotary compressor is provided.

For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of rotary compressor is provided, comprise housing and be arranged on compressing mechanism and the motor in described housing, described motor comprises the stator being fixed on described housing and is located at the rotor of described stator center, in described housing, be provided with the ventilation breach between the above and below that connects described motor, above described ventilation breach, be provided with flow apron.

Particularly, described ventilation breach comprises is located at the ventilation of first between described stator and the inwall of described housing breach, and described flow apron is that an annular slab and described annular slab are fixed on the inwall of described housing.

Optimally, the attachment face of described flow apron is lower than the upper-end surface of the coiling of described motor.

Particularly, described ventilation breach comprises the second ventilation breach of being located at the upper and lower end face that is provided with the first ventilation breach between described stator and the inwall of described housing and runs through described stator, and described flow apron is positioned at the coiling top of described motor.

Particularly, described flow apron is fixed on described stator or is shaped on described stator.

Or particularly, described flow apron is fixed on the inwall of described housing.

Optimally, the mean gap dimension delta between described flow apron outer periphery and the inwall of described housing and described the first ventilation breach mean breadth L diametrically meet relation: 0≤δ≤0.5L.

Optimally, the size of described flow apron meets following relation:

wherein, S is described flow apron screening area in the axial direction, and A is the cross sectional area of described ventilation breach, the internal diameter that d is described housing.

Optimally, the top of described housing is provided with an outlet pipe, and the distance between the lower surface of described flow apron and the top inner surface of described housing is greater than the entrance of described outlet pipe to the distance between the top inner surface of described housing.

Optimally, the lower surface that is also provided with multiple filter openings or described flow apron on described flow apron is provided with multiple concaveconvex structures.

The beneficial effect of rotary compressor provided by the invention is: by flow apron being set above the ventilation breach between the above and below connecting motor, in the time that gas mixture moves to outlet pipe through ventilation breach, can be subject to stopping of flow apron, turn back thereby occur to flow to, because the inertia of olesome is greater than gas, clash into and be adsorbed on the wall of flow apron or near housing having more olesome, from gas mixture, separate, effectively improve Oil-gas Separation effect high, improve the oil mass of telling of compressor, reach reduction compressor oil drainage amount, reduce the object of compressor air-discharging resistance, in addition, rotary compressor of the present invention also has advantages of that simple in structure, reliable operation, applicability are wide.

Accompanying drawing explanation

Fig. 1 is the structural representation of existing rotary compressor;

The structural representation of the rotary compressor that Fig. 2 provides for the embodiment of the present invention one;

The structural representation of the rotary compressor that Fig. 3 provides for the embodiment of the present invention two;

The structural representation of the rotary compressor that Fig. 4 provides for the embodiment of the present invention three;

Fig. 5 is the structural drawing of the flow apron of employing in the embodiment of the present invention one;

Fig. 6 is the structural drawing of the flow apron of employing in the embodiment of the present invention two, three.

Embodiment

In order to make technical problem to be solved by this invention, technological scheme and beneficial effect clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.

Please with reference to Fig. 2 to Fig. 4, now rotary compressor provided by the invention is described.Rotary compressor, comprise housing 1 and be arranged on compressing mechanism 2 and the motor 3 in housing 1, motor comprises the stator 31 being fixed on housing 1 and the rotor 32 of being located at stator 31 centers, in housing 1, be provided with the ventilation breach 5 between the above and below that connects motor 3, above ventilation breach 5, be provided with flow apron 6.

Rotary compressor provided by the invention, by flow apron 6 being set above the ventilation breach 5 between the above and below connecting motor 3, in the time that gas mixture moves to outlet pipe 4 through ventilation breach 5, can be subject to stopping of flow apron 6, turn back thereby occur to flow to, because the inertia of olesome is greater than gas, clash into and be adsorbed on the wall of flow apron 6 or near housing 1 having more olesome, from gas mixture, separate, effectively improve Oil-gas Separation effect high, improve the oil mass of telling of compressor, reach reduction compressor oil drainage amount, reduce the object of compressor air-discharging resistance, in addition, rotary compressor of the present invention also has advantages of that simple in structure, reliable operation, applicability are wide.

Embodiment one

Refer to Fig. 2 and Fig. 6, ventilation breach 5 comprises being located between stator 31 and the inwall of housing 1 and is provided with the first ventilation breach 51, flow apron 6 is for annular slab and be fixed on the inwall of housing 1, has avoided it to be arranged on rotatable parts and consumes more rotational energy, and its means of fixation can be welding.Play and more effectively stop gas mixture for the ease of flow apron 6, the preferably upper-end surface lower than the coiling 33 of motor 3 by the attachment face of flow apron 6, like this, flow apron 6 from the upper end-hole of the first ventilation breach 51 more close to, greatly improve the probability that gas mixture strikes flow apron 6, oil droplet separated effectively from gas mixture.

Embodiment two

Refer to Fig. 3 and Fig. 5, ventilation breach 5 comprises the second ventilation breach 52 of the upper and lower end face of being located at the ventilation of first between stator 31 and the inwall of housing 1 breach 51 and running through stator 31, and flow apron 6 is positioned at coiling 33 tops of motor 3; Flow apron 6 is fixed on stator 31 or is shaped on stator 31, has equally also avoided it to be arranged on rotatable parts and has consumed more rotational energy.

Embodiment three

Refer to Fig. 4 and Fig. 5, the present embodiment and embodiment's two difference is, flow apron 6 is fixed on the inwall of housing 1, generally can realize by the mode of welding, guarantees to be connected firmly, shock resistance is good.Some protruding weld parts specifically can be set in the periphery of flow apron 6, after making to be fixed on housing 1 inwall, there is gap between the two; Remaining structure is identical with embodiment two, repeats no more.

Optimally, refer to Fig. 2 to Fig. 6, mean gap dimension delta between the internal surface of the outer periphery of flow apron 6 and housing 1 and the first ventilation breach 51 mean breadth L diametrically meet relation: 0≤δ≤0.5L, so can make air-flow more flow to the central position of housing 1, to reduce gas-flow resistance, guarantee separating effect.

Optimally, referring to Fig. 2 to Fig. 6, the size design of flow apron 6 meets following relation:

wherein, S is flow apron 6 screening area in the axial direction, and for ventilation breach 55 cross sectional areas, (in the time only having the first ventilation breach 51, A is the cross-section area of the first ventilation breach 51 to A; In the time that ventilation breach 5 comprises the first ventilation breach 51 and the second ventilation breach 52, A is the cross-section area sum of the first ventilation breach 51 and the second ventilation breach 52), d is the internal diameter of housing 1; Be the half that the screening area of flow apron 6 is less than or equal to housing 1 internal cross section, can guarantee that like this gas-flow resistance can not be multiplied.

Further optimally, referring to Fig. 2 to Fig. 4, as a kind of embodiment of rotary compressor provided by the invention, the top of housing 1 is provided with outlet pipe 4, distance H between the top inner surface of the lower surface of flow apron 6 and housing 1 is greater than the entrance of outlet pipe 4 to the distance h between the top inner surface of housing 1, i.e. H>h; In other words flow apron 6 is arranged on outlet pipe 6 with upper/lower positions, so can guarantee that air-flow can effectively blocking through flow apron 6 before discharge.

Optimally, the mode of execution of the flow apron adopting as rotary compressor provided by the invention, on flow apron 6, be also provided with multiple filter openings, these filter openings are horn-like, large mouth down, osculum upward, like this, when especially mixture strikes flow apron 6, liquid oil droplet is blocked, and a part of gas can pass through from these filter openings, thereby reach the effect of Oil-gas Separation; Or, also can on the lower surface of flow apron 6, be provided with multiple concaveconvex structures, to increase the surface area of flow apron lower surface, reach the object of the ability that promotes its absorption oil droplet.Certainly, the material of flow apron 6 can be selected solid sheet material, the ability that but separates oil droplet in order to promote it, preferably select certain air permeability and there is the sheet material of better adsorptive power, can play so effective raising oil-gas separation efficiency, improve telling oil mass, reducing the effect of compressor air-discharging resistance of compressor.

The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.

Claims

1. a rotary compressor, comprise housing and be arranged on compressing mechanism and the motor in described housing, described motor comprises the stator being fixed on described housing and is located at the rotor of described stator center, it is characterized in that: in described housing, be provided with the ventilation breach between the above and below that connects described motor, above described ventilation breach, be provided with flow apron.

2. rotary compressor as claimed in claim 1, it is characterized in that: described ventilation breach comprises being located between described stator and the inwall of described housing and be provided with the first ventilation breach, described flow apron is that an annular slab and described annular slab are fixed on the inwall of described housing.

3. rotary compressor as claimed in claim 2, is characterized in that: the attachment face of described flow apron is lower than the upper-end surface of the coiling of described motor.

4. rotary compressor as claimed in claim 1, it is characterized in that: described ventilation breach comprises the second ventilation breach of the upper and lower end face of being located at the ventilation breach of first between described stator and the inwall of described housing and running through described stator, and described flow apron is positioned at the coiling top of described motor.

5. rotary compressor as claimed in claim 4, is characterized in that: described flow apron is fixed on described stator or is shaped on described stator.

6. rotary compressor as claimed in claim 4, is characterized in that: described flow apron is fixed on the inwall of described housing.

7. the rotary compressor as described in claim 2 to 6 any one, is characterized in that: the mean gap dimension delta between described flow apron outer periphery and the inwall of described housing and described the first ventilation breach mean breadth L diametrically meet relation: 0≤δ≤0.5L.

8. rotary compressor as claimed in claim 7, is characterized in that: the size of described flow apron meets following relation:

9. rotary compressor as claimed in claim 8, it is characterized in that: the top of described housing is provided with an outlet pipe, the distance between the lower surface of described flow apron and the top inner surface of described housing is greater than the entrance of described outlet pipe to the distance between the top inner surface of described housing.

10. rotary compressor as claimed in claim 8, is characterized in that: the lower surface that is also provided with multiple filter openings or described flow apron on described flow apron is provided with multiple concaveconvex structures.