CN204239250U - Compressor - Google Patents

Abstract

The utility model discloses a kind of compressor, comprising: shell, in shell, be limited with chamber; Main shaft, main shaft is located in chamber with extending along the vertical direction; Main bearing, main bearing is set on main shaft; Drive motor, drive motor is located at the interior also drive main spindle of chamber around the center axis thereof of this main shaft; Driving component, driving component is connected with main shaft and is driven by main shaft; At least two pump housings, at least two pump housings to be located at respectively in chamber and to be positioned at below main bearing, and each pump housing comprises respectively: cylinder, and cylinder is located at the side of main shaft; Primary spindle holds, and primary spindle holds and to be located on cylinder and between cylinder and main shaft; Little supplementary bearing, little supplementary bearing to be located on cylinder and between cylinder and shell; Countershaft, countershaft extends along the radial direction of main shaft that ground holds through primary spindle successively, cylinder and little supplementary bearing, and one end of countershaft is connected with driving component, and countershaft is driven by driving component and central axis around countershaft can pivotable.According to the compressor of the utility model embodiment, effectively reduce vibration.

Description

Compressor

Technical field

The utility model relates to technical field of refrigeration equipment, more specifically, relates to a kind of compressor.

Background technique

Compressor is the important composition parts that air conditioner, refrigerator etc. utilize the household electric appliance of cooling cycle system work.Rolling piston compressor is with a long history, so far still in extensive use.

Rotary compression engine efficiency is higher, but vibrating noise is poor, the high request of present user can not be met very well, each large compressor and air-conditioning factory are all devoted to the effort improving noise vibration, but because of in rotary compressor gas compression processes, all there is unbalance moment in the tangential of the pump housing and radial direction, be difficult to overcome, the actual effect improved is poor.

Vibration of compressor root mainly comprises six broad aspect: 1) there is difference between the load torque of pressurized gas and motor output torque, is the main cause causing circumference tangential vibrations; 2) the pressure cycle change of pressurized gas is the principal element causing compressor radial vibration; 3) rotation system (rotor-bent axle) unbalance inertia force causes bent axle amount of deflection to increase, and complete machine oscillation is increased; 4) air pulsing, mainly causes parts thereof structural vibration; 5) unbalanced magnetic pull of motor causes motor oscillating to increase, aggravation complete machine oscillation; 6) friction between the reciprocal telemechanical of valve block and slide plate and moving element and impact, cause component structural to vibrate, add the vibration of complete machine.Wherein, tangential acceleration is maximum, and secondly, axial acceleration is minimum for radial acceleration, generally characterizes the size of vibration of compressor by tangential acceleration.

Compressor is in the practical application of air conditioner, and for the ease of installing, the vibration isolator (damping washer) of compressor be axially uniform, and best effectiveness in vibration suppression is axis, can not the tangential and radial vibration of good absorption.Therefore compressor wishes all vibrations that can not remove to be converted into axial vibration.

Model utility content

The utility model is intended to one of solve the problems of the technologies described above at least to a certain extent.

For this reason, the utility model proposes a kind of compressor, this compressor arrangement is simply compact, effectively can reduce the vibration of compressor.

According to compressor of the present utility model, comprising: shell, in described shell, be limited with chamber; Main shaft, described main shaft is located in described chamber with extending along the vertical direction; Main bearing, described main bearing is set on described main shaft; Drive motor, described drive motor to be located in described chamber and to drive described main shaft around the center axis thereof of this main shaft; Driving component, described driving component is connected with described main shaft and is driven by described main shaft; At least two pump housings, described at least two pump housings to be located at respectively in described chamber and to be positioned at below described main bearing, and each described pump housing comprises respectively: cylinder, and described cylinder is located at the side of described main shaft; Primary spindle holds, and described primary spindle holds and to be located on described cylinder and between described cylinder and described main shaft; Little supplementary bearing, described little supplementary bearing to be located on described cylinder and between described cylinder and described shell; Countershaft, described countershaft extends along the radial direction of described main shaft that ground holds through described primary spindle successively, described cylinder and described little supplementary bearing, one end of described countershaft is connected with described driving component, and described countershaft is driven by described driving component and central axis around described countershaft can pivotable.

According to compressor of the present utility model, by arranging at least two pump housings, the unbalance moment that pump body compression gas produces can be cancelled out each other or weaken at least two pump housings, and make the action direction that is tangential and radial moment of the pump housing of conventional construction change into axis, the vibration of major part axis is consistent to damping washer with compressor shaft, can absorb vibration better and compressor body vibration is reduced.

In addition, according to compressor of the present utility model, following additional technical characteristics can also be had:

According to an embodiment of the present utility model, the described pump housing comprises two, and two described pump housing symmetries are located at the both sides of described main shaft.

According to an embodiment of the present utility model, described driving component comprises master bevel gear and secondary bevel gear, described master bevel gear to be located on described main shaft and around the center axis thereof of described main shaft, described secondary bevel gear is located on described countershaft, and described secondary bevel gear engages with described master bevel gear and around the center axis thereof of described countershaft.

According to an embodiment of the present utility model, the velocity ratio of described master bevel gear and described secondary bevel gear is more than or equal to 1.

According to an embodiment of the present utility model, described cylinder, described primary spindle hold and the upper surface of described little supplementary bearing is formed as plane respectively, and described plane only supports the lower surface of described main bearing.

According to an embodiment of the present utility model, described compressor also comprises the fuel feeding assembly corresponding with described pump housing number, and each described fuel feeding assembly is respectively corresponding described pump housing fuel feeding.

According to an embodiment of the present utility model, described drive motor is constant-seed motor or variable speed electric motors, particularly.

According to an embodiment of the present utility model, the described pump housing comprises three, and three described pump housings are evenly arranged along the circumference of described main shaft is spaced apart.

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

Accompanying drawing explanation

Above-mentioned and/or additional aspect of the present utility model and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:

Fig. 1 is the structural representation of the compressor according to the utility model embodiment;

Fig. 2 is close-up schematic view in Fig. 1;

Fig. 3 is the sectional drawing of Fig. 1 center line A-A;

Fig. 4 is the structural representation of the cylinder of the pump housing of compressor according to the utility model embodiment;

Fig. 5 is the structural representation that the primary spindle of the pump housing of compressor according to the utility model embodiment holds;

Fig. 6 is the structural representation of the little supplementary bearing of the pump housing of compressor according to the utility model embodiment;

Fig. 7 is the structural representation of the compressor according to another embodiment of the utility model.

Reference character:

Compressor 100;

Shell 10; Chamber 11;

Main shaft 20; Oil guide slot 21;

Main bearing 30; Drive motor 40;

Driving component 50; Master bevel gear 51; Secondary bevel gear 52;

The pump housing 60; Cylinder 61; Primary spindle holds 62; Little supplementary bearing 63; Countershaft 64;

Fuel feeding assembly 70.

Embodiment

Be described below in detail embodiment of the present utility model, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to 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, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " radial direction ", " axis ", " on ", D score, " vertically ", " level ", " top ", " end ", " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristics.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In description of the present utility model, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.

In the utility model, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, the concrete meaning of above-mentioned term in the utility model can be understood as the case may be.

The compressor 100 according to the utility model embodiment is specifically described below in conjunction with accompanying drawing.

As shown in Figures 1 to 7, shell 10, main shaft 20, main bearing 30, drive motor 40, driving component 50 and at least two pump housings 60 are comprised according to the compressor 100 of the utility model embodiment.

Specifically, be limited with chamber 11 in shell 10, main shaft 20 is located in chamber 11 with extending along the vertical direction.Main bearing 30 is set on main shaft 20, drive motor 40 to be located in chamber 11 and drive main spindle 20 around the center axis thereof of this main shaft 20, driving component 50 is connected with main shaft 20 and is driven by main shaft 20.

At least two pump housings 60 to be located at respectively in chamber 11 and to be positioned at below main bearing 30, and each pump housing 60 comprises cylinder 61 respectively, primary spindle holds 62, little supplementary bearing 63 and countershaft 64.Wherein, cylinder 61 is located at the side of main shaft 20, and primary spindle holds 62 and to be located on cylinder 61 and between cylinder 61 and main shaft 20, and little supplementary bearing 63 to be located on cylinder 61 and between cylinder 61 and shell 10.Along the radial direction of main shaft 20, countershaft 64 extends that ground holds 62 through primary spindle successively, cylinder 61 and little supplementary bearing 63, and one end of countershaft 64 is connected with driving component 50, and countershaft 64 is driven by driving component 50 and central axis around countershaft 64 can pivotable.

As shown in Figure 1, comprise a shell extended along the vertical direction 10 according to the compressor 100 of the utility model embodiment, the main shaft 20 in shell 10 is located in chamber 11 along the vertical direction, and drive motor 40 can drive main spindle 20 rotate around vertical direction.At least two pump housings 60 are provided with between the outer wall of the lower end of main shaft 20 and shell 10, each pump housing 60 is equivalent to a compressing mechanism, the axis of the pump housing 60 extends in the horizontal direction, the countershaft 64 of the pump housing 60 is connected with main shaft 20 by driving component 50, and the axial rotation of main shaft 20 can be converted to the axial rotation of countershaft 64 by driving component 50, the part stretching into cylinder 61 of countershaft 64 is provided with eccentric part, thus can carry out gas compression in cylinder 61.

In other words, the pump housing 60 of at least two cross settings is set in the chamber 11 longitudinally arranged according to the compressor 100 of the utility model embodiment, drive motor 40 drive main spindle 20 is around longitudinal rotation, around the gearing of the main shaft 20 longitudinally rotated by driving component 50, the countershaft 64 of each pump housing 60 can be driven around lateral rotation, thus each pump housing 60 can be made to carry out gas compression respectively, the moment of each pump housing 60 changes into longitudinal direction by the transverse direction of transmission compressor, and this moment direction is consistent with the axial damping packing ring direction of compressor 100.

Wherein it should be noted that, the cylinder 61 of each pump housing 60, primary spindle hold 62, the assembly structure of little supplementary bearing 63 and countershaft 64 can be similar with the assembly structure of the pump housing of conventional construction, its working principle is also substantially identical, difference is, the countershaft 64 of each pump housing 60 is only positioned at the minor axis at the pump housing 60 two ends, there is no major axis, and primary spindle holds 62 close with the size of little supplementary bearing 63, the countershaft 64 of this structure is shorter, the each pump housing 60 structure can be made more compact, assembling in chamber 11 is more reasonable, and drive path is short, and transmission efficiency is high.

In addition, the assembly structure of the axial damping packing ring in compressor 100 in compressor 100 and effect are also all appreciated that to those skilled in the art and easily realize, and are therefore not described in detail.

Thus, according to the compressor 100 of the utility model embodiment, by arranging at least two pump housings 60, the unbalance moment that the pump housing 60 pressurized gas produces can be cancelled out each other or weaken at least two pump housings 60, and make the action direction that is tangential and radial moment of the pump housing of conventional construction change into axis, the vibration of major part axis is consistent to damping washer with compressor shaft, can absorb vibration better and compressor 100 body vibration is reduced.

According to an embodiment of the present utility model, the pump housing 60 comprises two, and two pump housing 60 symmetries are located at the both sides of main shaft 20.As shown in Figure 2, that is, be provided with two pump housings, 60, two pump housings 60 in chamber 11 be located at the both sides of main shaft 20 respectively and be symmetrical arranged.Thus, the pump housing 60 of this structure is evenly distinguished around main shaft 20, and phase shifting, effectively can offset the unbalance moment that the pump housing 60 pressurized gas produces, thus reduction compressor 100 vibrates further.

As shown in Figure 7, in other embodiments of the present utility model, the pump housing 60 comprises three, and three pump housings 60 are evenly arranged along the circumference of main shaft 20 is spaced apart.Particularly, by the inclined graduation design of compressor 100, shell 10 external diameter can be strengthened, the lower space of shell 10 is increased, the design of the pump housing 60 volume of bottom can be increased, thus three uniform pump housings 60 can be assembled, more good utilisation space, improve the ability of compression, three pump housings 60 one-tenth 120 ° stagger, uniform balance, chamber 11 phase difference 120 °, interlock and carry out, possess the function reducing compressor 100 and vibrate equally, and effectiveness in vibration suppression is better.

The drive mechanism that the structure axial rotation of main shaft 20 being changed the axial rotation of countershaft 64 can adopt those skilled in the art to commonly use, preferably, according to an embodiment of the present utility model, driving component 50 comprises master bevel gear 51 and secondary bevel gear 52, master bevel gear 51 to be located on main shaft 20 and around the center axis thereof of main shaft 20, secondary bevel gear 52 is located on countershaft 64, and secondary bevel gear 52 engages with master bevel gear 51 and around the center axis thereof of countershaft 64.Further, master bevel gear 51 is more than or equal to 1 with the velocity ratio of secondary bevel gear 52.

Particularly, as depicted in figs. 1 and 2, the countershaft 64 of each pump housing 60 is respectively equipped with secondary bevel gear 52, the number of teeth of the secondary bevel gear 52 on each pump housing 60 is identical, can ensure that the rotation amplitude of the countershaft 64 of two pump housings 60 is consistent.Master bevel gear 51 is more than or equal to 1 with the velocity ratio of secondary bevel gear 52, and the rotating speed of the countershaft 64 of the pump housing 60 can be changed by the change controlling gear ratio, thus change the discharge capacity of the pump housing 60 within the unit time, namely by exporting actual different rotating speeds, the refrigerating capacity of compressor 100 can be regulated.The connection of master bevel gear 51 and main shaft 20 and secondary bevel gear 52 and the connection of countershaft 64 can be adopted and to be screwed or bolt block connects.

Be understandable that, driving component 50 is arranged to master bevel gear 51 and secondary bevel gear 52 structure, namely pass through gear transmission between main shaft 20 and countershaft 64, current high-precision gear-driven efficiency reaches 99%, adopts gear transmission structure substantially not affect the performance of compressor 100.In addition, along with working ability improves constantly, gear price, also along with decline, makes the cost of whole compressor 100 be controlled.

Gear lubricant is suitable with the lubricant oil of existing compressor 100 under the condition of low-load, and viscosity is tens degree, and master bevel gear 51 and secondary bevel gear 52 are located at the lower end of compressor 100, can sufficient lubrication.By gear transmission between main shaft 20 and countershaft 64, main bearing 30 is welded on separately on shell 10, and compressor 100 does not have the problem of coaxality, and the unbalanced magnetic pull of motor can be eliminated substantially, can ensure the normal operation of compressor 100.

As shown in Figures 4 to 6, according to an embodiment of the present utility model, cylinder 61, primary spindle hold 62 and the upper surface of little supplementary bearing 63 be formed as plane respectively, plane only supports the lower surface of main bearing 30.

That is, cylinder 61, primary spindle hold 62 and the upper surface of little supplementary bearing 63 be only against respectively on the lower surface of main bearing 30, and the lower surface of main bearing 30 is plane, cylinder 61, primary spindle are held the upper surface trimming process respectively of 62 and little supplementary bearing 63, cylinder 61 can be made, primary spindle hold 62 and little supplementary bearing 63 with main bearing 30, there is larger area of contact, thus improve cylinder 61, connective stability that primary spindle holds 62 and little supplementary bearing 63 and main bearing 30.The upper surface of cylinder 61 can be provided with tapped hole, position corresponding with the tapped hole of cylinder 61 on main bearing 30 also can arrange tapped hole, the pump housing 60 can be arranged on main bearing 30 by screw.

Model utility is according to an embodiment of the present utility model, and compressor also comprises the fuel feeding assembly 70 corresponding with the pump housing 60 number, and each fuel feeding assembly 70 is respectively the corresponding pump housing 60 fuel feeding.The structure of fuel feeding assembly 70 is appreciated that to those skilled in the art and easily realizes, and therefore repeats no more.Thus, by arranging fuel feeding assembly 70 respectively on each pump housing 60, fuel feeding can be carried out to each pump housing 60 respectively.

According to the utility model embodiment, drive motor 40 is constant-seed motor or variable speed electric motors, particularly, then corresponding compressor 100 can be invariable frequency compressor or frequency-changeable compressor.Thus, according to the compressor 100 of the utility model embodiment, by changing different drive motor 40, the difference in functionality of compressor 100 can be realized.

According to the compressor 100 of the utility model embodiment other form and operation be all known for those of ordinary skills, be not described in detail here.

In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present utility model or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.

Although illustrate and described embodiment of the present utility model above, be understandable that, above-described embodiment is exemplary, can not be interpreted as restriction of the present utility model, those of ordinary skill in the art can change above-described embodiment when not departing from principle of the present utility model and aim, revising, replacing and modification in scope of the present utility model.

Claims (8)

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

Shell, is limited with chamber in described shell;

Main shaft, described main shaft is located in described chamber with extending along the vertical direction;

Main bearing, described main bearing is set on described main shaft;

Drive motor, described drive motor to be located in described chamber and to drive described main shaft around the center axis thereof of this main shaft;

Driving component, described driving component is connected with described main shaft and is driven by described main shaft;

At least two pump housings, described at least two pump housings to be located at respectively in described chamber and to be positioned at below described main bearing, and each described pump housing comprises respectively:

Cylinder, described cylinder is located at the side of described main shaft;

Primary spindle holds, and described primary spindle holds and to be located on described cylinder and between described cylinder and described main shaft;

Little supplementary bearing, described little supplementary bearing to be located on described cylinder and between described cylinder and described shell;

Countershaft, described countershaft extends along the radial direction of described main shaft that ground holds through described primary spindle successively, described cylinder and described little supplementary bearing, one end of described countershaft is connected with described driving component, and described countershaft is driven by described driving component and central axis around described countershaft can pivotable.

2. compressor according to claim 1, is characterized in that, the described pump housing comprises two, and two described pump housing symmetries are located at the both sides of described main shaft.

3. compressor according to claim 2, it is characterized in that, described driving component comprises master bevel gear and secondary bevel gear, described master bevel gear to be located on described main shaft and around the center axis thereof of described main shaft, described secondary bevel gear is located on described countershaft, and described secondary bevel gear engages with described master bevel gear and around the center axis thereof of described countershaft.

4. compressor according to claim 3, is characterized in that, the velocity ratio of described master bevel gear and described secondary bevel gear is more than or equal to 1.

5. compressor according to claim 1, is characterized in that, described cylinder, described primary spindle hold and the upper surface of described little supplementary bearing is formed as plane respectively, and described plane only supports the lower surface of described main bearing.

6. compressor according to claim 1, is characterized in that, also comprises the fuel feeding assembly corresponding with described pump housing number, and each described fuel feeding assembly is respectively corresponding described pump housing fuel feeding.

7. compressor according to claim 1, is characterized in that, described drive motor is constant-seed motor or variable speed electric motors, particularly.

8. compressor according to claim 1, is characterized in that, the described pump housing comprises three, and three described pump housings are evenly arranged around the circumference of described main shaft is spaced apart.