CN204140432U - Electrodynamic type compressor and there is its refrigerating circulatory device - Google Patents

Abstract

The utility model discloses a kind of electrodynamic type compressor and there is its refrigerating circulatory device.Electrodynamic type compressor comprises: cylinder assembly, piston, main bearing, supplementary bearing and venting gas appliance.Main bearing and/or supplementary bearing are provided with center cavity and at least one chamber, periphery, and chamber, periphery is located at the outside of center cavity and is communicated with center cavity, center cavity be provided with exhaust port towards compression chamber one end.Venting gas appliance comprises outlet valve and snubber, outlet valve is located in center cavity movably to open or close exhaust port, limit multiple gas channel between the periphery wall of outlet valve and the inner circle wall of center cavity, snubber to be located in center cavity and the side away from compression chamber being positioned at outlet valve to limit the displacement of outlet valve.According to electrodynamic type compressor of the present utility model, add the aisle spare of exhaust, decrease air resistance loss, thus improve compressor efficiency.

Description

Electrodynamic type compressor and there is its refrigerating circulatory device

Technical field

The utility model relates to refrigerating field, especially relates to a kind of electrodynamic type compressor and has its refrigerating circulatory device.

Background technique

As shown in Figure 11, the area of the valve accommodating groove of the tongue type outlet valve in correlation technique is large, and its bottom surface is thin, so the rigidity of the bearing flange or valve block plate that form compression chamber reduces, compression chamber distortion increases.Therefore, because Leakage Gas increase causes compression efficiency to reduce.Although in order to solve the problem in correlation technique, disclose the free valve due to exhaust, outlet valve knee-action.But the aisle spare of exhaust is less, so air resistance loss increases, and compressor efficiency declines.

Model utility content

The utility model is intended to solve one of technical problem in correlation technique at least to a certain extent.

For this reason, an object of the present utility model is to propose a kind of electrodynamic type compressor, adds the aisle spare of exhaust, decreases air resistance loss.

Another object of the present utility model is to propose a kind of refrigerating circulatory device with above-mentioned electrodynamic type compressor.

According to electrodynamic type compressor of the present utility model, comprising: cylinder assembly, described cylinder assembly comprises the cylinder with compression chamber; Piston, described piston is located in described compression chamber rotationally; Main bearing and supplementary bearing, described main bearing and described supplementary bearing are located at upper-end surface and the lower end surface of described cylinder assembly respectively, described main bearing and/or described supplementary bearing are provided with center cavity and at least one chamber, periphery, chamber, described periphery is located at the outside of described center cavity and is communicated with described center cavity, described center cavity be provided with exhaust port towards described compression chamber one end; Venting gas appliance, described venting gas appliance comprises outlet valve and snubber, described outlet valve is located in described center cavity movably to open or close described exhaust port, limit multiple gas channel between the periphery wall of described outlet valve and the inner circle wall of described center cavity, described snubber to be located in described center cavity and the side away from described compression chamber being positioned at described outlet valve to limit the displacement of described outlet valve.

According to electrodynamic type compressor of the present utility model, by being provided with multiple gas channel, adding the aisle spare of exhaust, decreasing air resistance loss, thus improve compressor efficiency.

In addition, above-mentioned according to the utility model electrodynamic type compressor can also have following additional technical characteristics:

In embodiments more of the present utility model, the cross-section area of described center cavity is formed as circular, described outlet valve comprises the jut that multiple uniform intervals is arranged, the periphery wall of each described jut and the inner circle wall of described center cavity are slidably matched, and limit a described gas channel between two adjacent described juts and the inner circle wall of described center cavity.

In other embodiments of the present utility model, the cross section of described center cavity is formed as regular polygon, and described outlet valve is formed as disc, limits a described gas channel between two limits be often connected of described center cavity and the periphery wall of described outlet valve.

In specific embodiment of the utility model, chamber, described periphery is that multiple and around described center cavity circumference is spaced apart.

In further embodiment of the present utility model, have at least the cross-section area in chamber, a periphery different from the cross-section area in chamber, periphery described in other in chamber, described multiple periphery, wherein, in the process of described piston rotation, when described piston rotation is blocked described exhaust port and is made the opening area of described exhaust port minimum, the aperture position of the chamber, described periphery that the cross-section area in chamber, described multiple periphery is maximum and described exhaust port nearest.

In preferred embodiment of the present utility model, the cross-section area summation in chamber, described periphery is greater than the area of described exhaust port.

According to embodiments more of the present utility model, from described center cavity away from described compression chamber end to described main bearing and/or described supplementary bearing the end face away from described compression chamber be provided with the plane of inclination of annular, the plane of inclination of described annular is tilting to extend towards the direction at the center of center cavity to the direction of described compression chamber from described end face, and the outlet in chamber, described periphery is positioned on the plane of inclination of annular.

According to embodiments more of the present utility model, described venting gas appliance also comprises coil spring, and the two ends of described coil spring are only against between described snubber and described outlet valve often to drive exhaust port described in described exhaust valve closure.

Alternatively, described coil spring is Hookean spring or nonlinear spring.

According to refrigerating circulatory device of the present utility model, comprise the electrodynamic type compressor above-mentioned according to the utility model.

According to refrigerating circulatory device of the present utility model, by being provided with above-mentioned electrodynamic type compressor, thus decreasing air resistance loss, improve compressor efficiency.

Accompanying drawing explanation

Fig. 1 is the sectional view in portion of rotary compression mechanism in embodiment 1 of the present utility model, represents the summary of venting gas appliance;

Fig. 2, with in embodiment 1, represents the planimetric map of the valve pocket summary of the venting gas appliance that main bearing flange part configures;

Fig. 3, with in embodiment 1, represents planimetric map and the sectional view of the details of valve pocket;

Fig. 4, with in embodiment 1, represents the component figure completing sectional view and wherein assemble of venting gas appliance;

Fig. 5, with in embodiment 1, represents the sectional view of the gas flow being discharged to venting gas appliance from compression chamber;

Fig. 6, with in embodiment 2 of the present utility model, represents the outlet valve possessing gas channel;

Fig. 7, with in embodiment 2, represents the planimetric map of the outlet valve assembled in valve pocket;

Fig. 8, with in embodiment 3 of the present utility model, represents planimetric map and the sectional view of valve pocket design;

Fig. 9, with in embodiment 3 of the present utility model, represents the sectional view of the gas flow of exhaust from compression chamber to venting gas appliance;

Figure 10, with in embodiment 4 of the present utility model, represents the planimetric map of valve pocket design;

Figure 11 is cases of design in the past, represents the planimetric map possessing the main bearing of tongue type valve.

Reference character:

Electrodynamic type compressor 1, housing 2, motor section 3,

Compression mechanical part 4, cylinder 40, compression chamber 41, piston 45, eccentric shaft 60, main bearing 50, long bearing 50a, main bearing flange 50b, supplementary bearing 55, minor axis hold 55a, supplementary bearing flange 55b, exhaust silencer 51,

Venting gas appliance 10, exhaust port 13, center cavity 12, chamber, periphery 16, valve pocket 11, valve seat 14, locking groove 15, slide plate 46, gas channel 16a, non-cutting portion 16b, valve seat outer circumferential face 12a, plane of inclination 18,

Outlet valve 20 (22), coil spring 35, snubber 30, jut 22a, curved part 22b.

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 ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", " counterclockwise ", " axis ", " radial direction ", orientation or the position relationship of the instruction such as " circumference " 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 integral; 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 or the interaction relationship of two elements.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.

Describe the electrodynamic type compressor 1 according to the utility model embodiment in detail below with reference to Fig. 1-Figure 10, wherein this electrodynamic type compressor 1 comprises rotary compressor, scroll compressor and reciprocal compressor.Rotary compressor comprises compressor with rolling rotor, slide vane compressor or oscillating compressor.Electrodynamic type compressor 1 according to the utility model embodiment can be applied in refrigerating circulatory device, such as, be applied in aircondition, refrigeration plant or water heater.

According to the electrodynamic type compressor 1 of the utility model embodiment, comprising: cylinder assembly, piston 45, main bearing 50, supplementary bearing 55 and venting gas appliance 10.Wherein, cylinder assembly comprises the cylinder 40 with compression chamber 41.When electrodynamic type compressor 1 is single cylinder compressor, cylinder assembly comprises a cylinder 40.When electrodynamic type compressor 1 is duplex cylinder compressor, the central diaphragm that cylinder assembly comprises two cylinders 40 and is located between two cylinders 40.

Piston 45 is located in compression chamber 41 rotationally.Main bearing 50 and supplementary bearing 55 are located at upper-end surface and the lower end surface of cylinder assembly respectively, main bearing 50 and/or supplementary bearing 55 are provided with center cavity 12 and at least one chamber, periphery 16, chamber, periphery 16 is located at the outside of center cavity 12 and is communicated with center cavity 12, center cavity 12 be provided with exhaust port 13 towards compression chamber 41 one end, also be provided with the valve seat 14 of annular in center cavity 12, valve seat 14 is arranged around exhaust port 13.Preferably, the cross-section area summation in chamber, periphery 16 is greater than the area of exhaust port 13, thus can reduce air resistance loss further.More preferably, the ratio of the cross-section area summation in chamber, periphery 16 and the area of exhaust port 13 is in the scope of 1 ~ 4.

Venting gas appliance 10 comprises outlet valve 20 (22) and snubber 30, outlet valve 20 is located in center cavity 12 movably to open or close exhaust port 13, limit multiple gas channel 16a between the periphery wall of outlet valve 20 and the inner circle wall of center cavity 12, snubber 30 to be located in center cavity 12 and the side away from compression chamber 41 being positioned at outlet valve 20 to limit the displacement of outlet valve 20.Particularly, outlet valve 20 is placed on valve seat 14 to be located in center cavity 12.Wherein be understandable that, when venting gas appliance 10 is located on supplementary bearing 55, the setting of outlet valve 20 should ensure that outlet valve 20 can not drop when closing exhaust port 13.

Need to be described, electrodynamic type compressor 1 also comprises element such as exhaust silencer 51 grade, and exhaust silencer 51 is located on main bearing 50.

In compression chamber 41 by under the pressurized gas effect compressed, outlet valve 20 floats from exhaust port 13 to open exhaust port 13, pressurized gas are drained in center cavity 12 by exhaust port 13, a part wherein in pressurized gas is drained in exhaust silencer 51 by gas channel 16a, and another part pressurized gas are drained in exhaust silencer 51 by chamber, periphery 16.

According to the electrodynamic type compressor 1 of the utility model embodiment, by being provided with multiple gas channel 16a, adding the aisle spare of exhaust, decreasing air resistance loss, thus improve compressor efficiency.

In embodiments more of the present utility model, as shown in Figure 6 and Figure 7, the cross-section area of center cavity 12 is formed as circular, outlet valve 22 comprises the jut 22a that multiple uniform intervals is arranged, the periphery wall of each jut 22a and the inner circle wall of center cavity 12 are slidably matched, and limit a gas channel 16a between two adjacent jut 22a and the inner circle wall of center cavity 12.Preferably, the number of jut 22a is 3 or 4.

In other embodiments of the present utility model, the cross section of center cavity 12 is formed as regular polygon, and outlet valve 20 is formed as disc, limits a gas channel 16a between two limits be often connected of center cavity 12 and the periphery wall of outlet valve 20.Particularly, the contact on the periphery wall of outlet valve 20 and every bar limit of center cavity 12 is positioned at the central authorities of the corresponding edge of center cavity 12, and chamber, periphery 16 can not the center drilling on every bar limit of center cavity 12.Preferentially, regular polygon is equilateral triangle, square, regular pentagon or regular hexagon.

According in embodiments more of the present utility model, chamber, periphery 16 is that multiple and around center cavity 12 circumference is spaced apart.In the example of fig. 3, chamber, periphery 16 is 10, and in the example of Figure 10, chamber, periphery 16 is 8, and wherein the number in chamber, periphery 16 limits according to actual conditions, is just not specifically limited here.

As shown in Figure 8, in further embodiment of the present utility model, have at least the cross-section area in chamber, a periphery 16 different from the cross-section area in other chambeies, periphery 16 in chamber, multiple periphery 16, wherein, in the process that piston 45 rotates, when piston 45 rotate block exhaust port 13 and make the opening area of exhaust port 13 minimum time, the aperture position of the maximum chamber, periphery of the cross-section area in chamber, multiple periphery 16 16 and exhaust port 13 nearest.In the example of fig. 8, the cross-section area in chamber, periphery 16 increases gradually by the order in chamber, periphery 161,162,163,164, and the cross-section area in chamber, periphery 164 is maximum.In piston 45 rotation process, the opening area of exhaust port 13 can change, and as shown in Figure 5, now the opening area of exhaust port 13 is comparatively large, and the gas of discharging from exhaust port 13 is assigned to chamber, multiple periphery 16.As shown in Figure 9, now the opening area of exhaust port 13 is less, and the gas of discharging from exhaust port 13 mainly flows into the maximum chamber, periphery 16 of cross-section area, thus ensures that exhaust passage is comparatively large, reduces exhaust resistance.

As shown in Fig. 1, Fig. 3-Fig. 5, Fig. 9, in embodiments more of the present utility model, from center cavity 12 away from compression chamber 41 end to main bearing 50 and/or supplementary bearing 55 the end face away from compression chamber 41 be provided with the plane of inclination 18 of annular, the plane of inclination 18 of annular from end face to compression chamber 41 direction on tilt to extend towards the direction at the center of center cavity 12, the outlet in chamber, periphery 16 is positioned on the plane of inclination 18 of annular.Thus by being provided with the plane of inclination 18 of annular, the opening area in chamber, each periphery 16 can be increased, relax from chamber, periphery 16 to the air-flow of exhaust silencer 51, therefore not only can reducing the drag losses of exhaust gas, also can reducing the noise to producing during exhaust silencer 51 jet exhaust gas.

In embodiments more of the present utility model, as shown in Figure 4 and Figure 5, venting gas appliance 10 also comprises coil spring 35, and the two ends of coil spring 35 are only against between snubber 30 and outlet valve 20 often to drive outlet valve 20 to close exhaust port 13.Thus by being provided with coil spring 35, waving of outlet valve 20 can be relaxed.Alternatively, coil spring 35 is Hookean spring or nonlinear spring.

According to the refrigerating circulatory device of the utility model embodiment, comprise the electrodynamic type compressor 1 according to the utility model above-described embodiment, thus decrease air resistance loss, improve compressor efficiency.

Below with reference to Fig. 1-Figure 11, the electrodynamic type compressor according to the utility model four specific embodiments is described.

Embodiment 1:

Embodiment 1 is the case that venting gas appliance of the present utility model adopts on rotary compressor.The design's form is general in the motor compressor comprising rotary compressor.

In Fig. 1, the motor section 3 that rotary compressor 1 is configured by the compression mechanical part 4 be fixed on housing 2 internal diameter, its top is formed.Compression mechanical part 4 possesses: carry out in the compression chamber 41 formed in cylinder 40, this cylinder the piston 45 of eccentric operating, with the reciprocating slide plate of this piston synchronous (not shown), piston 45 is carried out eccentric drive eccentric shaft 60, carry out sliding to eccentric shaft the main bearing 50 and supplementary bearing 55 supported.

Main bearing 50 and supplementary bearing 55, hold 55a by long bearing 50a and main bearing flange 50b, minor axis and supplementary bearing flange 55b forms respectively.Main bearing flange 50b and supplementary bearing flange 55b is fixed in cylinder 40, together form the compression chamber 41 of sealing with cylinder 40.Venting gas appliance 10, can be configured in the one side or both of main bearing flange 50b or supplementary bearing flange 55b, embodiment 1 is configured with venting gas appliance 10 in main bearing flange 50b, exhaust silencer 51 has been installed on its top.

The pressurized gas of compression in compression chamber 41, by the exhaust port 13 to compression chamber 41 opening, are diverted to and are discharged in exhaust silencer 51 in the chamber, periphery 16 of center cavity 12 opening.Thereafter, discharge from outlet pipe (not shown) to refrigeration plant.Therefore, the internal pressure of housing 2 is high pressure.

Before explanation venting gas appliance 10, first, the component parts of venting gas appliance 10 is described.

Fig. 2 is the planimetric map of the main bearing flange 50b after processing.The valve pocket 11 possessed in main bearing flange 50b, in the bottom centre of center cavity 12 along the chamber, 10 peripheries 16 that the inner circumferential of exhaust port 13, valve seat 14, center cavity 12 configures and the inclined-plane composition upper end open face in these center cavities 12 and chamber, periphery 16 being carried out conical chamfer machining.In addition, circular locking groove 15 (shown in Fig. 3) has been possessed in center cavity 12.

At this, center cavity 12 and chamber, periphery 16 are cylinder type, as aftermentioned, even if to be regular polygon also passable for the sectional shape of center cavity 12.In addition, chamber, periphery 16 is that gas channel is just passable, not necessarily cylindrical.As a reference, Fig. 2 represents with dotted line (---) at the internal diameter of compression chamber 41 and the position of slide plate 46.

Fig. 3 is planimetric map and the sectional view (X-X cross section) thereof of valve pocket 11.Be configured in the chamber, 10 peripheries 16 in the outside of center cavity 12, possess the respective gas channel 16a to the inner circumferential opening of center cavity 12.Gas channel 16a is the exhaust passage of the pressurized gas from exhaust port 13 discharge.On the other hand, just defined by 10 non-cutting portion 16b that respective gas channel 16a and center cavity 12 surround.The locking groove 15 possessed in the inner circumferential of center cavity 12 is the circumferential grooves inserting fixing snubber 30 (Fig. 4).

The volume of exhaust port 13 is exhaust clearance volume, and wherein residual pressurized gas become reflation loss.Therefore, the height of exhaust port 13 is necessary to reduce.Due to the design's requirement, the wall thickness (C) of the valve seat outer circumferential face 12a formed between valve seat 14 and the inner circumferential of center cavity 12 is the thinnest, is generally 1.5 ~ 2.0mm.

The utility model is used in the free valve without fixing part in valve pocket 11, so the area of plane of valve seat outer circumferential face 12a is much little compared with the venting gas appliance of the tongue type valve used in the past.And, the surrounding of valve seat outer circumferential face 12a by non-cutting portion 16b around, strengthen to some extent.That is, around the total measurement (volume) of the non-cutting portion 16b of valve pocket 11, the basic volume with deducting chamber, periphery 16 from plane of inclination 18 is suitable.

Like this, use the valve pocket 11 of free valve still not small-sized, and together form with the configuration in chamber, periphery 16 rigidity that non-cutting portion 16b increases valve pocket 11, this is also one of the purpose of this utility model.That is, the rigidity by possessing the main bearing flange 50b of valve pocket 11 promotes, and improves the internal modification of compression chamber 11.And the noise produced by rigidity lifting exhaust port 13 and outlet valve 20 (Fig. 4) can be reduced.At this, plane of inclination 18 can reduce the passage long (groove depth in chamber, periphery) in chamber, periphery 16, reduce the pressure loss of exhaust.But the thinner thickness of main bearing flange 50b, also can omit plane of inclination 18.

The venting gas appliance 10 completed in Fig. 4, expression main bearing flange 50b and these general assembly components.General assembly component is outlet valve 20, coil spring 35, snubber 30 in order from lower.The plectane of outlet valve 20 to be thicknesss of slab be about 0.2 ~ 0.3mm.Very small―gap suture is only had, the such as glade plane space of about 20 ~ 200 μm, so the centre of center cavity 12 can knee-action sleekly between the external diameter and the internal diameter of center cavity 12 of outlet valve 20.

The Compress Spring of coil spring 35 to be wire diameters be 0.2 ~ 0.5mm, cylinder, circular cone, inverse circular cone, cydariform etc. are more applicable.In addition, except line style spring, also use non-linear spring, grow up to direct ratio with the floating of center cavity 12, increase spring constant and be also highly profitable.Snubber 30 is the C shape jump ring that there are opening portion in central authorities.In addition, as snubber, also thin bushing nut etc. can be used.Coil spring 35 and snubber 30 can have various design according to purport of the present utility model in addition, so need not be limited in the scope of above-mentioned explanation.

As a reference, the cases of design of the rotary compressor carried in domestic air conditioner (1HP) is described.The internal diameter of center cavity 12 and the external diameter of outlet valve 20 are 13 ~ 15mm, the internal diameter of exhaust port 13 is 8 ~ 10mm, the maximum compression of coil spring 35 is 0.3 ~ 1.0N, the path increment of outlet valve 20 (knee-action width) is 2 ~ 3mm.

These data can, as a case, just in order to be easier to understand disclosure of the present utility model, not be limited in above-mentioned scope.In addition, in duplex cylinder compressor, the air displacement of 1 cylinder can reduce, so each numerical value can reduce.In addition, in the refrigeration plant that compression ratio is high, outlet valve path increment can reduce, so coil spring can omit.

Fig. 5 is the sectional view of compression mechanical part 4, represents the venting gas appliance 10 possessed in compression chamber 41 and main bearing flange 50b.According to Fig. 5, the flowing of exhaust airstream is described.Owing to being made outlet valve 20 float from valve seat 14 by the pressurized gas compressed in compression chamber 41.Pressurized gas, by this levitation gap, are diverted in chamber, 10 peripheries 16 and rise, be out discharged to exhaust silencer 51 (Fig. 1) from plane of inclination 18.In this exhaust stroke, plane of inclination 18 expands the opening area in each chamber, periphery 16, relaxes the air-flow from chamber, periphery 16 to exhaust silencer 51.Therefore, the drag losses of exhaust gas still can not reduced in plane of inclination 18, can reduce the noise produced when spraying exhaust silencer 51 yet.

At this, the gap (S) formed between the outlet valve 20 of floating and valve seat 14 is valve block stroke.Valve block stroke is long maximum, and coil spring 35 is also pressed the tightest, and outlet valve 20 is stopping in a flash, if air displacement reduces, outlet valve 20 can reduce Valve travel amount to be got back on valve seat 14.

In above-mentioned exhaust stroke, outlet valve 20 is along with waving knee-action.This waves excessive, and the closing velocity of valve seat 14 can slow down, so refrigerating capacity can be caused to decline from the adverse current of valve pocket 11 pairs of compression chambers 41, and power consumption can increase.Particularly, the operating conditions that air displacement is many, gives one example, and motor speed, when more than 100rps, will easily produce above-mentioned phenomenon.

The effect of coil spring 35 relaxes waving of outlet valve 20.The active force of coil spring 35 increases, and be reduced to direct ratio with the path increment (S) of outlet valve 20, waving of outlet valve 20 can reduce.But above-mentioned means can increase exhaust resistance, so according to the characteristic of application apparatus, need the design of the path increment (S) considering coil spring 35 and outlet valve 20.

Next, the cases of design in chamber, periphery 16 is described.In the cases of design of above-mentioned domestic air conditioner, the internal diameter (D1) in chamber, periphery 16 is 4mm, its quantity (n) is 10, the internal diameter of exhaust port 13 (D2) is 9mm, the ratio (R) of the aisle spare (A2) of the total sectional area in chamber, periphery 16 (A1) and exhaust port 13 is R=A1/A2=(4/9) ²the total sectional area (A2) in xn=1.97, chamber, periphery 16 is about 2 times of the aisle spare (A1) of exhaust port 13.But, the scope consider from the few cryogenic device of extraction flow to the more air-conditioning of air displacement, using refrigerant and the words of motor rotational speed, above-mentioned R should be about 1.0 ~ 4.0.

Next, the manufacture method of venting gas appliance 10 is simply illustrated.In figure 3, adopt the multiple-spindle milling machine such as 2 axles or 3 axles to process during processing valve pocket 11, chamber, several periphery is processed simultaneously.Thereafter, together with center cavity, process by the order of exhaust port 13 and valve seat 14 and plane of inclination 18.Finally, cycle deburring in center cavity 12.Packaging technology is very simple, can carry out automation.Like this, the valve pocket adopting circle to form and the phone tool easy processing of component.In addition, valve pocket 11 carries out moulding by sintered alloy or forging method, can significantly omit above-mentioned machining.

Embodiment 2:

The words that the internal diameter of the design that the internal diameter of exhaust port 13 is less or center cavity 12 expands a little, and the valve seat outer circumferential face 12a formed between valve seat 14 slightly makes the words expanded, the valve seat outer circumferential face 12a formed between the periphery of outlet valve and valve seat 14 can become large, so the outer circumferential side of outlet valve can add gas channel.

The outlet valve 22 of the flat board shown in Fig. 6, to be made up of 4 the jut 22a configured at equal intervals and curved part 22b.4 jut 22a are curves on circle, more a little bit smaller than the internal diameter of center cavity 12.The width (W1) of jut 22a is larger than the width (W2) of the gas channel 16a in periphery chamber 16 in addition.So jut 22a can not be embedded in gas channel 16a inside, and outlet valve 22 can slide up and down swimmingly.

Fig. 7 is the planimetric map can assembling outlet valve 22 in valve pocket 11.4 curved part 22b, be the passage of the exhaust added between center cavity 12.In addition, W1 > W2 is so jut 22a can not be embedded in gas channel 16a.In addition, the quantitative aspects 3 ~ 4 of jut 22a or curved part 22b is more favourable, and the quantity of jut 22a increases, and the general passage area of curved part 22b can reduce.

From the pressurized gas that exhaust port 13 is discharged, while flowing in chamber, 10 peripheries 16, be diverted in 4 curved part 22b, be out discharged to exhaust silencer 51 from center cavity 12.At this, the exhaust of flowing out with chamber, periphery 16 is collaborated.And snubber 30 has large gas channel at center, so also can reduce from curved part 22b exhaust resistance out.

In addition, by additional curved part 22b, the area of outlet valve 22 will reduce, so can reduce to the active force of the exhaust of the direction effect that outlet valve 22 floats.Its result, curved part 22b still can not reduce drag losses, and also has the effect stablizing outlet valve 22 posture further.

In addition, the lower end of curved part 22b coil spring 35 is heavy, so the useful area of curved part 22b may diminish, but wire diameter is at below 0.5mm, so do not worry that the useful area of curved part 22b can significantly reduce.In addition, use inverse cone type coil spring, at the end face that wire diameter is little, exert pressure to the core of outlet valve 22, the useful area of curved part 22b does not just have any problem.

Embodiment 3:

Rotary compressor is due to the revolution of piston 45, and the effective vent area of exhaust port 13 can significantly change.Such as, when the angle of swing of piston 45 is 150 degree from slide plate center, the opening area maximum (100%) of exhaust port 13, thereafter, towards the direction of 360 degree, useful area reduces, the opening area minimum (about 15%) before and after about 355 degree.

This phenomenon, is also appreciated that by Fig. 5.Due in compression chamber 41 revolution piston 45 opening area of exhaust port 13 can be changed, its aperture position is partial to the peripheral direction of exhaust port 13, thus from exhaust port 13 discharge air-flow to skew direction set.

In Fig. 8, the internal diameter in respective chamber, periphery or gas channel increase gradually by the order in chamber, periphery 161,162,163,164.Therefore, the offset direction of the effective vent of exhaust port 13 and the position consistency in chamber, periphery 164.Fig. 9 is the sectional view of compression chamber 41 and venting gas appliance 10.The rotational position of piston 45 is approximately 350 degree, while reducing the effective vent area of exhaust port 13, its aperture position offsets towards the direction in chamber, periphery 164.

From the gas that exhaust port 13 is discharged, flow out to chamber, immediate periphery 164 from the aperture position of exhaust port 13, in addition, can shunt to chamber, periphery 163 and 162.Therefore, waving of outlet valve 20 not only can reduce exhaust resistance, can also average the distribution of the active force of the planar surface portion of outlet valve 20, so can reduce.Like this, the feature of embodiment 3 to be optimized the gas passage area in chamber, individual periphery 16 respectively.

Embodiment 4:

The feature of the embodiment 4 shown in Figure 10 is just polygonal by being made by the sectional shape of its center cavity 12, between center cavity 12 and the outlet valve 20 of circle, added gas channel 12d.In addition, for the consideration to manufacturing, 4 interior angles are R shape.

The same with other embodiment, exhaust port 13 and valve seat 14 has been possessed in the bottom surface of center cavity 12.Centrally the inner circumferential in chamber 12 is configured with chamber, 8 peripheries.But note chamber, periphery 16 not to the central opening on 4 limits of formation center cavity 12.The external diameter of the outlet valve 20 possessed in center cavity 12, has gap, more smallerly than the width of center cavity 12 can slide.

The contact of the periphery of outlet valve 20 and the inner circumferential of center cavity 12, must be the central authorities on 4 limits of square.Be restricted by the action of the substantially horizontal of these four contact outlet valves 20, the action of above-below direction can only be carried out.Above-mentioned contact is the slip surface of outlet valve 20 linear contact lay, so slip resistance is little, advantage is that outlet valve 20 can stably knee-action.And circular outlet valve 20 can rotation, so outlet valve 20 can not produce local abrasion.In addition, this slip surface, as mentioned above, can form non-cutting portion 16b by the configuration in the chamber, periphery 16 considered in advance.

Embodiment 4, combination by the center cavity 12 of square and the outlet valve 20 of circle, have additional 4 gas channel 12d, forms the effect of 4 good slip surfaces.In addition, by adding 4 gas channel 12d, the balance of the gas load that outlet valve 20 is floated can be improved.In addition, Tu10Zhong, in the restraining groove 15 (without figure) that the central authorities that snubber 30 (not shown) embeds 4 limits possess.In addition, coil spring 35 does not also illustrate.

At this, the sectional shape of center cavity 12 is that to comprise the regular polygon of square just passable.But if the quantity on polygonal limit increases, the quantity of gas channel 12d can increase, but the gross area of gas channel 12d can reduce, so not good scheme.Therefore, center cavity 12 is that scope from equilateral triangle to regular hexagon is practical.And from the viewpoint of manufacturing, the processability of square is superior.But use the sintered alloy method of forming, manufacturing aspect does not have difference.

Below summary of the present utility model and effect are described.

(1) venting gas appliance of the present utility model, be the periphery of the center cavity of circular exhaust valve knee-action be configured as several gas channel chamber, periphery, improve venting gas appliance rigidity while, realize miniaturization (embodiment 1).In outlet valve, add gas channel, reduce air resistance (embodiment 2).Further, respectively the size in chamber, periphery is optimized, reduces air resistance (embodiment 3).By making the shape of center cavity be square, adding 4 gas channels, forming round and smooth outlet valve slip surface (embodiment 4).

(2) by these ways and effect, reduce exhaust port air resistance loss out, and stablize the action of outlet valve further, improve compression efficiency.Noise can be improved in addition.

(3) because number of components is less, so assembling performance is superior.In addition processing and shaping also very superior.

(4) due to above-mentioned feature, the utility model extensively can adopt as the outlet valve of electrodynamic type compressor.

Industry utilizes possibility

Comprise the motor compressor of rotary compressor of the present utility model, can use in air conditioner, refrigeration plant, water heater etc., in addition, the utility model also can use in the rotary compressor of housing low pressure.Venting gas appliance of the present utility model is easy to manufacture.

In the utility model, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " can be fisrt feature immediately below second feature or tiltedly below, or only represent that fisrt feature level height is less than second feature.

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, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this specification or example and different embodiment or example can carry out combining and combining by those skilled in the art.

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, revises, replace and modification in scope of the present utility model.

Claims (10)

1. an electrodynamic type compressor, is characterized in that, comprising:

Cylinder assembly, described cylinder assembly comprises the cylinder with compression chamber;

Piston, described piston is located in described compression chamber rotationally;

Main bearing and supplementary bearing, described main bearing and described supplementary bearing are located at upper-end surface and the lower end surface of described cylinder assembly respectively, described main bearing and/or described supplementary bearing are provided with center cavity and at least one chamber, periphery, chamber, described periphery is located at the outside of described center cavity and is communicated with described center cavity, described center cavity be provided with exhaust port towards described compression chamber one end;

Venting gas appliance, described venting gas appliance comprises outlet valve and snubber, described outlet valve is located in described center cavity movably to open or close described exhaust port, limit multiple gas channel between the periphery wall of described outlet valve and the inner circle wall of described center cavity, described snubber to be located in described center cavity and the side away from described compression chamber being positioned at described outlet valve to limit the displacement of described outlet valve.

2. electrodynamic type compressor according to claim 1, it is characterized in that, the cross-section area of described center cavity is formed as circular, described outlet valve comprises the jut that multiple uniform intervals is arranged, the periphery wall of each described jut and the inner circle wall of described center cavity are slidably matched, and limit a described gas channel between two adjacent described juts and the inner circle wall of described center cavity.

3. electrodynamic type compressor according to claim 1, it is characterized in that, the cross section of described center cavity is formed as regular polygon, and described outlet valve is formed as disc, limits a described gas channel between two limits be often connected of described center cavity and the periphery wall of described outlet valve.

4. electrodynamic type compressor according to claim 1, is characterized in that, chamber, described periphery is that multiple and around described center cavity circumference is spaced apart.

5. electrodynamic type compressor according to claim 4, it is characterized in that, have at least the cross-section area in chamber, a periphery different from the cross-section area in chamber, periphery described in other in chamber, described multiple periphery, wherein, in the process of described piston rotation, when described piston rotation is blocked described exhaust port and is made the opening area of described exhaust port minimum, the aperture position of the chamber, described periphery that the cross-section area in chamber, described multiple periphery is maximum and described exhaust port nearest.

6. electrodynamic type compressor according to claim 1, is characterized in that, the cross-section area summation in chamber, described periphery is greater than the area of described exhaust port.

7. electrodynamic type compressor according to claim 1, it is characterized in that, from described center cavity away from described compression chamber end to described main bearing and/or described supplementary bearing the end face away from described compression chamber be provided with the plane of inclination of annular, the plane of inclination of described annular is tilting to extend towards the direction at the center of center cavity to the direction of described compression chamber from described end face, and the outlet in chamber, described periphery is positioned on the plane of inclination of annular.

8. electrodynamic type compressor according to claim 1, is characterized in that, described venting gas appliance also comprises coil spring, and the two ends of described coil spring are only against between described snubber and described outlet valve often to drive exhaust port described in described exhaust valve closure.

9. electrodynamic type compressor according to claim 8, is characterized in that, described coil spring is Hookean spring or nonlinear spring.

10. a refrigerating circulatory device, is characterized in that, comprises the electrodynamic type compressor according to any one of claim 1-9.