CN209229057U - A kind of rotary compressor - Google Patents

Abstract

The utility model provides a kind of rotary compressor, including upper cylinder cover；Lower cylinder cap；Cylinder, upper cylinder cover and lower cylinder cap are respectively arranged at the first end and second end of cylinder, form one for compressing the compression space of refrigerant；Upper cylinder cover is equipped with a gas vent, and upper cylinder cover is provided with an air valve system away from a side surface of cylinder；Air valve system includes baffle and valve block, one end of baffle and one end of valve block are fixedly installed in upper cylinder cover, the other end of valve block covers gas vent, baffle is mounted on the part on valve block and above gas vent to the curving for deviating from the cylinder, bending lift is H, throttle slice thickness T, and the ratio for being bent lift and throttle slice thickness is H/T, wherein, 5.8≤H/T≤9.2.The utility model is bent lift H and throttle slice thickness ratio by the baffle of air valve system in optimization design compressor, it is ensured that valve block promotes compressor performance while the service life；The compressor of the utility model, have the advantages that it is structurally reasonable it is simple, strong operability, be easily achieved.

Description

A kind of rotary compressor

Technical field

The utility model relates to compressor fields, specifically, being related to a kind of including a kind of air valve system rotary compression Machine.

Background technique

Energy conservation and environmental protection are the two principal themes of current refrigeration, air conditioner industry, and air-conditioning frequency conversion and the promotion of performance are applications The important directions of energy saving theme.Core component of the compressor as air-conditioning, behavior pattern have air-conditioning system of crucial importance Influence.To promote compressor performance, need to optimize its structure size.

The baffle and valve block of existing compressor valve system are mounted on cylinder cap, and valve block covers the gas vent on cylinder cap, Refrigerant is prevented to be discharged.In compressor operation, refrigerant is constantly compressed, and valve block opens up after reaching pressure at expulsion, is made Cryogen is discharged by gas vent.In compressor operation, the openable maximum height of valve block is bent lift by baffle Limitation.Frequency-changeable compressor revolving speed is higher and higher at present, and exhaust resistance loss is increasing under high revolving speed, under the performance of compressor Drop.

When designing compressor arrangement, effective flow area of exhaust side can be increased by increasing baffle bending lift, be reduced Compressor air-discharging drag losses, to promote compressor performance.But as baffle bending lift increases, valve block is in opening procedure In bending stress it is also bigger, easily cause valve block to be broken.Reducing throttle slice thickness at this time can reduce bending stress, but reduce When throttle slice thickness, valve block rigidity can be reduced, the shut-in time after valve block is opened will appear delay, cause valve under gas force effect The closing velocity of piece increases, and increases the impact stress of cylinder cap, be easy to cause valve block damaged, influences the compressor service life.

Therefore it when design frequency-changeable compressor valve block, not only needs to increase baffle and is bent lift and improve compressor performance, It is also required to select suitable throttle slice thickness simultaneously, only finds balance between bending lift and throttle slice thickness, just can guarantee pressure The working life of contracting machine air valve system.

It should be noted that information is only used for reinforcing the background to the utility model disclosed in above-mentioned background technology part Understanding, therefore may include the information not constituted to the prior art known to persons of ordinary skill in the art.

Utility model content

For the problems of the prior art, the purpose of this utility model is to provide a kind of air valve system with optimization design The rotary compressor of system, specifically, by the ratio of the baffle of optimization design air valve system curved journey H and throttle slice thickness T, Compressor performance is promoted while can guarantee the valve block service life.

The embodiments of the present invention provide a kind of rotary compressor, comprising:

Upper cylinder cover；

Lower cylinder cap；

Cylinder, the upper cylinder cover and the lower cylinder cap are respectively arranged at the first end and second end of the cylinder, form one For compressing the compression space of refrigerant；

The upper cylinder cover is equipped with a gas vent, and the upper cylinder cover is provided with away from a side surface of the cylinder for installing The seat portion of one air valve system；

The air valve system includes baffle and valve block, and one end of one end of the baffle and the valve block is fixedly installed in The other end of the upper cylinder cover, the valve block covers the gas vent, and the baffle is mounted on the valve block and on gas vent To the curving for deviating from the cylinder, bending lift is H for the part of side, and the throttle slice thickness is T, the bending lift and institute The ratio for stating throttle slice thickness is H/T, wherein 5.8≤H/T≤9.2.

Preferably, one end of the baffle of the upper cylinder cover and one end of valve block pass through bolt or riveting is fixedly installed in institute State upper cylinder cover.

Preferably, the valve block is high-tensile structural steel.

Preferably, the throttle slice thickness T meets 0.3mm≤T≤0.5mm.

Preferably, the ratio of the bending lift and the throttle slice thickness meets: H/T 7.5.

Preferably, the ratio H/L of the bending lift and baffle freedom length, 0.085≤H/L≤0.130.

Preferably, the ratio H/L of the bending lift and baffle freedom length is 0.1.

The utility model provides a kind of rotary compressor, passes through the gear of air valve system in optimization design rotary compressor Plate benging lift H and throttle slice thickness ratio, it is ensured that valve block promotes compressor performance while the service life, meets frequency-changeable compressor gas The demand of valve system design；The rotary compressor of the utility model has structurally reasonable simple, strong operability, is easy to real Existing advantage.

Detailed description of the invention

The drawings herein are incorporated into the specification and forms part of this specification, and shows the implementation for meeting the application Example, and together with specification it is used to explain the principle of the application, by reading referring to the following drawings to non-limiting embodiment institute The other features, objects and advantages of the detailed description of work, the utility model will become more apparent upon.It should be evident that retouching below Attached drawing in stating is only some embodiments of the utility model, for those of ordinary skill in the art, is not paying wound Under the premise of the property made is worked, it is also possible to obtain other drawings based on these drawings.

Fig. 1 is the structural schematic diagram of the rotary compressor of an embodiment of the present invention；

Fig. 2 is the structural schematic diagram of the air valve system of an embodiment of the present invention, the partial enlargement of the a-quadrant in Fig. 1 Schematic diagram；

Fig. 3 is the H/T and maximum stress in bend (band ■ curve) and H/T and maximum impact stress that different embodiments obtain The relational graph of (band ▲ curve).

Appended drawing reference

11 crankshafts

12 mufflers

13 upper cylinder covers

14 cylinders

15 lower cylinder caps

16 pistons

17 seat portions

131 valve blocks

132 baffles

138 bolts

139 gas vents

H is bent lift

T throttle slice thickness

L baffle freedom length

Specific embodiment

Example embodiment is described more fully with reference to the drawings.However, example embodiment can be with a variety of shapes Formula is implemented, and is not understood as limited to example set forth herein；On the contrary, thesing embodiments are provided so that the disclosure will more Fully and completely, and by the design of example embodiment comprehensively it is communicated to those skilled in the art.Described feature, knot Structure or characteristic can be incorporated in any suitable manner in one or more embodiments.

In addition, attached drawing is only the schematic illustrations of the disclosure, it is not necessarily to be drawn by ratio.Identical attached drawing mark in figure Note indicates same or similar part, thus will omit repetition thereof.Some block diagrams shown in the drawings are function Energy entity, not necessarily must be corresponding with physically or logically independent entity.

Fig. 1 is a kind of structural schematic diagram of rotary compressor.Including cylinder 14, upper cylinder cover 13 and lower cylinder cap 15, institute It states upper cylinder cover 13 and the lower cylinder cap 15 is respectively arranged at the first end (upper end) and second end (lower end) of the cylinder 14, formed One for compressing the compression space of refrigerant.The top of upper cylinder cover 13 is equipped with a muffler 12, is freezing for eliminating compressor The noise generated in the process.Cylinder 14, upper cylinder cover 13, lower cylinder cap 15 and muffler 12 are all set in a shell and (do not show in figure In out).Crankshaft 11 is additionally provided in shell, the top of crankshaft 11 is positioned at the central axes of shell by support component, crankshaft 11 Lower part is arranged in the center of upper cylinder cover 13 and lower cylinder cap 15, so that entire crankshaft 11 is located at the central axes of shell.In upper cylinder half Lid 13, lower cylinder cap 15 and cylinder 14, which are formed by compression space, is equipped with piston 16, and piston 16 is fixed on the lower part of crankshaft 11, It is rotated synchronously with crankshaft 11, to compress refrigerant.The upper cylinder cover 13 is equipped with a gas vent 139, and the upper cylinder cover is away from described One side surface of cylinder is provided with the seat portion 17 for installing an air valve system.

Fig. 2 is the partial enlargement diagram of the a-quadrant in Fig. 1, and the air valve system includes baffle 131 and valve block 132, institute One end of one end and the valve block for stating baffle is mounted on the upper cylinder cover 13, described in the other end covering of the valve block 132 Gas vent 139, prevents refrigerant that (arrow direction in figure) is discharged, and the baffle 131 is mounted on the valve block and on gas vent To the curving for deviating from the cylinder, the baffle 131 is un-flexed in the gas vent central axis and baffle for the part of side The distance definition of partial lower surface is bending lift H, and the throttle slice thickness is T, and the ratio for being bent lift and throttle slice thickness is H/T, as shown in Figure 2.

Fig. 3 is the H/T and maximum stress in bend (band ■ curve) and H/T and maximum impact stress that different embodiments obtain The relational graph of (band ▲ curve).From figure 3, it can be seen that when H/T is too small, when such as H/T=5.0, the maximum stress in bend of valve block Up to 750MPa；And when H/T is too big, when such as H/T=9.8, the maximum impact stress of valve block reaches 45MPa.In use, greatly Bending stress or impact stress can all cause valve block damaged.So in order to combine bending stress and impact stress, this is practical It is novel that the ratio H/T for being bent lift and throttle slice thickness is limited between 5.8 to 9.2 ranges.Preferably, the bending lift with The ratio H/T of throttle slice thickness is 7.5.

In some embodiments, one end of the baffle of the upper cylinder cover and one end of valve block pass through bolt or the fixed peace of riveting Loaded on the upper cylinder cover, but it is not limited to above-mentioned fixed installation.High-tensile structural steel can be selected in the valve block.Preferably, the valve Piece thickness 0.3mm≤T≤0.5mm.

In addition, the motion parts length of valve block is limited by baffle freedom length L, herein, baffle freedom length L is fixed Justice is the length that position starts curved point to the baffle at baffle gas vent center.Increase baffle freedom length L, it can be with Reduce the bending stress of valve block.But when increasing L, valve block rigidity reduces, and the shut-in time postpones during valve plate movement, in gas Valve block closing velocity is caused to increase under physical strength effect, valve block increases the impact stress of cylinder cap, be easy to cause valve block damaged, influences The compressor service life.Therefore, the ratio for optimizing the bending lift and the baffle freedom length is also beneficial to improve valve block Service life.In some embodiments, when the ratio H/L of the bending lift and the baffle freedom length is 0.085 to 0.130 When between range, the service life of valve block is improved.Preferably, the bending lift and the ratio H/L of baffle freedom length are 0.1。

In conclusion the utility model provides a kind of rotary compressor, which includes upper cylinder cover；Lower cylinder cap；Gas Cylinder, the upper cylinder cover and the lower cylinder cap are respectively arranged at the first end and second end of the cylinder, form one for compressing system The compression space of cryogen；The upper cylinder cover is equipped with a gas vent, and the upper cylinder cover is provided with away from a side surface of the cylinder For installing the seat portion of an air valve system；The air valve system includes baffle and valve block, one end of the baffle and the valve One end of piece is mounted on the upper cylinder cover, and the other end of the valve block covers the gas vent, and the baffle is mounted on described To the curving for deviating from the cylinder, bending lift is H for part on valve block and above gas vent, and the throttle slice thickness is T, The ratio of the bending lift and the throttle slice thickness is H/T, wherein 5.8≤H/T≤9.2.The utility model provides a kind of rotation Rotary compressor is bent lift H and throttle slice thickness ratio by the baffle of air valve system in optimization design rotary compressor, can Guarantee to promote compressor performance while the valve block service life, meets the needs of frequency-changeable compressor air valve system design；The utility model Compressor, have the advantages that it is structurally reasonable it is simple, strong operability, be easily achieved.

It, cannot the above content is specific preferred embodiment further detailed description of the utility model is combined Assert that the specific implementation of the utility model is only limited to these instructions.It is obvious to a person skilled in the art that the application is not It is limited to the details of above-mentioned exemplary embodiment, and without departing substantially from spirit herein or essential characteristic, it can be with Other concrete forms realize the application.Therefore, in all respects, the embodiments should be taken as exemplary, and And be non-limiting, scope of the present application is indicated by the appended claims rather than the foregoing description, it is intended that power will be fallen in All changes in the meaning and scope for the equivalency that benefit requires are included in the application.It should not will be any in claim Appended drawing reference is construed as limiting the claims involved.Furthermore, it is to be understood that one word of " comprising " does not exclude other units or steps, odd number It is not excluded for plural number.The multiple units or device stated in device claim can also by a unit or device by software or Person hardware is realized.It should be understood that "lower" or "upper", the terms such as " downward " or " upward " are used to referring to exemplary embodiment Location expression these features for being shown in figure of feature；First, second equal words are used to indicate names, and are not offered as any Specific sequence.

Claims (7)

1. a kind of rotary compressor characterized by comprising

Upper cylinder cover；

Lower cylinder cap；

Cylinder, the upper cylinder cover and the lower cylinder cap are respectively arranged at the first end and second end of the cylinder, form one and are used for Compress the compression space of refrigerant；

The upper cylinder cover is equipped with a gas vent, and the upper cylinder cover is provided with away from a side surface of the cylinder for installing a gas The seat portion of valve system；

The air valve system includes baffle and valve block, and one end of one end of the baffle and the valve block is fixedly installed in described The other end of upper cylinder cover, the valve block covers the gas vent, and the baffle is mounted on the valve block and above gas vent To the curving for deviating from the cylinder, bending lift is H for part, and the throttle slice thickness is T, the bending lift and the valve The ratio of piece thickness is H/T, wherein 5.8≤H/T≤9.2.

2. rotary compressor according to claim 1, it is characterised in that: one end of the baffle of the upper cylinder cover and valve block One end pass through bolt or riveting be fixedly installed in the upper cylinder cover.

3. rotary compressor according to claim 1, it is characterised in that: the valve block is high-tensile structural steel.

4. rotary compressor according to claim 1, it is characterised in that: the throttle slice thickness T meet 0.3mm≤T≤ 0.5mm。

5. rotary compressor according to claim 1, it is characterised in that: the bending lift and the throttle slice thickness Ratio H/T is 7.5.

6. rotary compressor according to claim 1, it is characterised in that: the bending lift and baffle freedom length Ratio H/L, 0.085≤H/L≤0.130.

7. rotary compressor according to claim 1, it is characterised in that: the bending lift and baffle freedom length Ratio H/L be 0.1.