CN204371677U - Compressor - Google Patents
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- CN204371677U CN204371677U CN201420847778.1U CN201420847778U CN204371677U CN 204371677 U CN204371677 U CN 204371677U CN 201420847778 U CN201420847778 U CN 201420847778U CN 204371677 U CN204371677 U CN 204371677U
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Abstract
The utility model provides a kind of compressor.Compressor comprises housing, be arranged on the screw rotor of enclosure interior, be arranged on the inside of housing and along the axially movable slide valve assembly of screw rotor, form compression chamber between screw rotor and housing; The controller that compressor also comprises the first Pressure testing mouth be communicated with the end of compression chamber, the second Pressure testing mouth be communicated with the exhaust cavity of housing, the first pressure transducer, the second pressure transducer and is connected with the first pressure transducer and the second pressure transducer respectively; First pressure transducer is arranged on the first Pressure testing mouth and sentences the compression end of a period gas pressure detecting compression chamber; Second pressure transducer is arranged on the second Pressure testing mouth and sentences the exhaust pressure detecting exhaust cavity; Controller is according to the movement of exhaust pressure spool control valve assembly of compression end of a period gas pressure and exhaust cavity.According to the utility model, to solve in prior art the problem being difficult to accurate Calculation compressor compresses end of a period gas pressure and exhaust pressure.
Description
Technical field
The utility model relates to field of air conditioning, in particular to a kind of compressor.
Background technique
The object of the interior volume specific ratio adjustment of single screw compressor is that the gas pressure that compression is terminated is consistent with the exhaust back pressure in system exhaust path, in order to avoid cause producing expansion in the moment just having started to be vented or compressing causing extra power loss because the gas pressure compressing end is greater than or less than system back pressure.The object arranging slide valve assembly in compressor is the volume regulating the position of vent ports and then regulate compression to terminate, and reaches the object controlling interior volume specific ratio.
In prior art, application number be 201210182145.9 patent document mainly utilize oily piston driving slide valve assembly to regulate, or application number be 200780052688.6 patent document be utilize stepper motor by driving mechanism drive slide valve assembly move.
Wherein, slide valve assembly comprises guiding valve body, above-mentioned two kinds of modes are all the positions by precalculated guiding valve body, the enclosed volume at the end of the compression of compressor is calculated according to the length of guiding valve body, the gas pressure value than calculating compression end is amassed by Computed-torque control, calculate compression according to the pressure of inspiration(Pi) under operating mode and adiabatic index again and terminate pressure, thus contrast with back pressure thus regulate.Need by the slide-valve gear of oily piston driving the pointer watch dial that an inner pressure ratio and interior volume specific ratio are set, determine interior volume specific ratio by the position observing pointer; Also a position transducer is needed to come by the motor angle of swing induction crow flight distance of sliding valve movement thus the long-pending ratio of Computed-torque control by stepper motor transmission.
The shortcoming of these two kinds of modes is that the adiabatic index levels of precision of the refrigerant gas under different operating mode and degree of regulation are closely bound up, and under same operating, the adiabatic index of whole compression process also has small change, and result of calculation has certain error; The pressure that air-breathing ends simultaneously is leaked and the impact of partial duty port aperture also has certain difference with the pressure of inspiration(Pi) of system, and the result therefore calculated also has gap.
The shortcoming of above-mentioned two kinds of technological schemes is: because needs are by other sizes and parameter, utilizes empirical correlation to carry out the gas pressure calculated at the end of compression, therefore can not determine the gas pressure value at the end of the compressor compresses under different operating mode accurately.
Model utility content
Main purpose of the present utility model is to provide a kind of compressor, to solve in prior art the problem being difficult to accurate Calculation compressor compresses end of a period gas pressure and exhaust pressure.
To achieve these goals, the utility model provides a kind of compressor.Compressor comprises: housing, the relief opening that housing has exhaust cavity and is communicated with exhaust cavity; Screw rotor, is arranged on the inside of housing, forms compression chamber between screw rotor and housing; Slide valve assembly, slide valve assembly is arranged on the inside of housing and along the axially movably setting of screw rotor, compressor also comprises: the first Pressure testing mouth, and the first Pressure testing mouth is communicated with the end of compression chamber; First pressure transducer, the first pressure transducer is arranged on the first Pressure testing mouth and sentences the compression end of a period gas pressure detecting compression chamber; Second Pressure testing mouth, the second Pressure testing mouth is communicated with exhaust cavity; Second pressure transducer, the second pressure transducer is arranged on the second Pressure testing mouth and sentences the exhaust pressure detecting exhaust cavity; Controller, controller is connected with the first pressure transducer and the second pressure transducer respectively, and controller is according to the movement of exhaust pressure spool control valve assembly of compression end of a period gas pressure and exhaust cavity.
Further, compressor also comprises gas channel, and the first Pressure testing mouth is communicated with compression chamber by gas channel.
Further, the slide valve assembly guiding valve relief opening that comprises guiding valve body and be communicated with relief opening; Compressor also comprises: pilot groove, and pilot groove is arranged on guiding valve body and along the axis of guiding valve body and extends; At least one impulse mouth, one end of impulse mouth is communicated with pilot groove, and the other end of impulse mouth is communicated with compression chamber; Wherein, impulse mouth and pilot groove form gas channel.
Further, the through setting of radial direction of impulse opening's edge guiding valve body.
Further, the second Pressure testing mouth is arranged at the side of the close guiding valve relief opening of the exhaust cavity of housing.
Further, screw rotor has helical groove, and compressor comprises multiple impulse mouth, and the width direction interval of multiple impulse opening's edge pilot groove is arranged and one end away from pilot groove of multiple impulse mouth is all corresponding with helical groove arranges.
Further, the first Pressure testing mouth is arranged on the sidewall matched with slide valve assembly of housing.
Further, compressor also comprises the drive unit for driving the relative screw rotor of slide valve assembly to move axially.
Further, drive unit is stepper motor or hydraulic jack.
Application the technical solution of the utility model, compressor comprises housing, screw rotor and slide valve assembly.The relief opening that housing has exhaust cavity and is communicated with exhaust cavity, screw rotor is arranged on the inside of housing, forms compressed-air actuated compression chamber between screw rotor and housing; Slide valve assembly be arranged on housing inside and along the axially movably setting of screw rotor; Compressor also comprises the first Pressure testing mouth, the first pressure transducer, the second Pressure testing mouth, the second pressure transducer and the controller that are communicated with the end of compression chamber, first pressure transducer is arranged on the first Pressure testing mouth and sentences the compression end of a period gas pressure detecting compression chamber, second Pressure testing mouth is communicated with exhaust cavity, and the second pressure transducer is arranged on the second Pressure testing mouth and sentences the exhaust pressure detecting exhaust cavity; Controller is connected with the first pressure transducer and the second pressure transducer respectively, and controller is according to the movement of exhaust pressure spool control valve assembly of compression end of a period gas pressure and exhaust cavity.Above-mentionedly to arrange, gas pressure value at the end of utilizing the first pressure transducer being arranged on the first Pressure testing mouth place directly can draw compression in compression chamber, utilize the second pressure transducer directly can draw exhaust pressure, and without the need to the position of detecting slide valve assembly place in advance with utilize empirical correlation etc. to carry out above-mentioned two gas pressure values of calculatings, therefore the detecting method of this gas pressure value is simple, accurate.
Accompanying drawing explanation
The Figure of description forming a application's part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 shows the partial cross structural representation of the embodiment according to compressor of the present utility model;
Fig. 2 shows the structural representation coordinated with slide valve assembly according to the screw rotor of the embodiment of compressor of the present utility model;
Fig. 3 shows the main TV structure schematic diagram of the guiding valve body of the embodiment according to compressor of the present utility model;
Fig. 4 shows the C of Fig. 3 to structural representation;
Fig. 5 shows the structural representation of the setting position of the impulse mouth of the embodiment according to compressor of the present utility model;
Fig. 6 shows the perspective view in a direction of the slide valve assembly according to compressor of the present utility model;
Fig. 7 shows the perspective view in another direction of the slide valve assembly according to compressor of the present utility model;
Fig. 8 shows the curve synoptic diagram being in deficient compressive state according to compressor of the present utility model; And
Fig. 9 shows the curve synoptic diagram being in overcompression state according to compressor of the present utility model.
Wherein, above-mentioned accompanying drawing comprises the following drawings mark:
1, housing; 11, relief opening; 12, exhaust passage; 2, screw rotor; 21, helical groove; Profile line on front side of 21a, tooth; Profile line on rear side of 21b, tooth; 3, slide valve assembly; 31, guiding valve body; 32, supporting element; 311, guiding valve relief opening; 312, pilot groove; 313, impulse mouth; 4, the second Pressure testing mouth; 5, the first Pressure testing mouth; 8, star-wheel.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the utility model in detail in conjunction with the embodiments.
In the utility model and embodiment of the present utility model, in some accompanying drawing, illustrate only the part-structure schematic diagram of slide valve assembly.
As shown in Figure 1, the utility model embodiment provides a kind of compressor.Compressor comprises housing 1, screw rotor 2 and slide valve assembly 3.Screw rotor 2 is arranged on the inside of housing 1, forms compressed-air actuated compression chamber between screw rotor 2 and housing 1; Slide valve assembly 3 be arranged on housing 1 inside and along the axially movably setting of screw rotor 2.
Compressor also comprises the first Pressure testing mouth 5, first pressure transducer and the controller be communicated with compression chamber.First pressure transducer is arranged on the first Pressure testing mouth 5 and sentences the gas pressure detecting compression chamber, and the first pressure transducer is electrically connected with controller.
Above-mentionedly to arrange, gas pressure value at the end of utilizing the first pressure transducer being arranged on the first Pressure testing mouth 5 place directly can draw compression in compression chamber and calculating without using empirical correlation etc., therefore the structure of this compressor is simple, and gas pressure value is accurate; Further, because above-mentioned gas pressure value is accurate, the follow-up degree of regulation that can control interior volume specific ratio better.
As shown in Figures 1 to 5, in the utility model embodiment, the relief opening 11 that housing 1 has exhaust cavity and is communicated with exhaust cavity, compressor also comprises the second Pressure testing mouth 4 and the second pressure transducer be communicated with exhaust cavity.Second pressure transducer is arranged on the second Pressure testing mouth 4 and sentences the exhaust pressure detecting exhaust cavity, controller is connected with described first pressure transducer and the second pressure transducer respectively, and controller is according to the movement of exhaust pressure spool control valve assembly 3 of compression end of a period gas pressure and exhaust cavity.
Above-mentionedly to arrange, utilize the second pressure transducer being arranged on second Pressure testing mouth 4 place accurately can draw exhaust pressure in exhaust cavity, and without the need to by for his parameter, utilize empirical correlation to calculate exhaust pressure in exhaust cavity.
By contrasting the compression end of a period gas pressure at the end of compression that exhaust pressure in exhaust cavity that the second pressure transducer detects and the first pressure transducer detect, can regulate to control the interior volume specific ratio of compressor slide valve assembly 3.Above-mentioned interior volume specific ratio regulating method structure is simple, be convenient to control.
As depicted in figs. 1 and 2, in the utility model embodiment, particularly, compressor also comprises two star-wheels 8.Two star-wheels 8 are arranged on the inside of housing 1 and engage with screw rotor 2 respectively, the internal face of housing 1, form closed element volume (i.e. compression chamber) between the helical groove 21 of screw rotor 2 and the flank of tooth of star-wheel 8.
By through for the air aspiration cavity of above-mentioned element volume and compressor, thus the object that available element volume reaches adjustment compressor capacity can be reduced by moving axially of regulating slide valve assembly 3.
From Fig. 1, when guiding valve body 31 low order end length is shorter, being moved to the left guiding valve then can make the element volume closed be communicated with air aspiration cavity, then star-wheel 8 also needs to rotate to an angle again and element volume just can be made all to close, element volume now diminishes comparatively before, and therefore the discharge capacity of compressor changes; And the position of exhaust end of a period can be changed when guiding valve body 31 moves left and right, being then vented end of a period volume changes, then change interior volume specific ratio.
As shown in Figure 1, in embodiment of the present utility model, arrow A represents gas flow direction during compressor air suction, and arrow B represents gas flow direction during compressor air-discharging.Compressor also comprises and exhaust passage 12.Exhaust passage 12 is communicated with the outside gas to be drained into housing 1 with relief opening 11.
As shown in Figure 2 and Figure 5, in embodiments of the invention, the screw rotor 2 of compressor also to have on front side of tooth profile line 21b on rear side of profile line 21a and tooth.Wherein, on front side of tooth, on rear side of profile line 21a and tooth, profile line 21b forms above-mentioned helical groove 21.
As shown in Figure 1, in embodiment of the present utility model, compressor also comprises bearing housing 6 and main shaft 7.Under the drive of main shaft 7, screw rotor 2 is along with main shaft 7 synchronous rotary.
In the utility model embodiment, compressor also comprises gas channel, and the first Pressure testing mouth 5 is communicated with compression chamber by gas channel.
As shown in Figures 1 to 7, particularly, the slide valve assembly 3 guiding valve relief opening 311 that comprises guiding valve body 31 and be communicated with relief opening 11.Compressor also comprises pilot groove 312 and at least one impulse mouth 313.
Pilot groove 312 is arranged on guiding valve body 31 and along the axis of guiding valve body 31 and extends; One end of impulse mouth 313 is communicated with pilot groove 312, and the other end of impulse mouth 313 is communicated with compression chamber; Wherein, impulse mouth 313 and pilot groove 312 form above-mentioned gas channel.
Above-mentionedly arrange, impulse mouth 313 is communicated with the first Pressure testing mouth 5 all the time in the process moved axially of guiding valve body 31 to utilize pilot groove 312 to guarantee, thus ensures the accuracy of the gas pressure value that the first pressure transducer records.
As shown in Figure 6 and Figure 7, in the utility model embodiment, the connecting rod that slide valve assembly 3 also comprises supporting element 32 and is arranged between supporting element 32 and guiding valve body 31.Wherein, connecting rod has annular groove circumferentially, forms above-mentioned guiding valve relief opening 311 between the hypotenuse of annular groove and guiding valve body 31.
As shown in Figure 2, relief opening 11 has small gap.
As depicted in figs. 1 and 2, in the utility model embodiment, particularly, guiding valve relief opening 311 is vacant cavitys in centre that guiding valve body 31 and supporting element two part are formed, what affect slide valve assembly exhaust is the leftmost hypotenuse of guiding valve body 31 (Fig. 1), the stroke of slide valve assembly is limited, there is not guiding valve relief opening 311 and disconnected second state of relief opening 11, whenever be all can being vented with guarantee of connection, only along with the movement of slide valve assembly, from Fig. 2, when the rightmost hypotenuse of guiding valve body 31 does not cross the square small gap on relief opening 11 to the right, the position that compression end of a period starts to be vented determines with the hypotenuse of guiding valve body 31, when the hypotenuse of guiding valve body 31 crosses square small gap to the right, the position of exhaust is exactly determine with the Far Left of small gap.
As shown in Figure 2, in embodiment of the present utility model, screw rotor 2 has helical groove 21.Each helical groove 21 is divided into three processes in the rotation process of screw rotor 2, is air-breathing, compression and exhaust respectively.On the length direction of guiding valve body 31 with above-mentioned three processes respectively the corresponding region arranged be D region, E region and F region.In the constricted zone shown in E, the pressure of gas changes greatly, and gas pressure can become the gas pressure value of compression end from pressure of inspiration(Pi), impulse mouth 313 can not be opened in above-mentioned E region; The pressure change in region shown in F is change between the gas pressure value and exhaust pressure of compression end substantially, for convenience of the force value that the first Pressure testing mouth 5 and the second Pressure testing mouth 4 record being contrasted, therefore impulse mouth 313 is arranged on above-mentioned E, F region intersection.
As shown in Figure 1, in the utility model embodiment, particularly, pilot groove 312 is arranged on the side deviating from screw rotor 2 of guiding valve body 31.
As shown in Figure 1 and Figure 4, in embodiment of the present utility model, impulse mouth 313 is along the through setting of radial direction of guiding valve body 31.
As shown in Figure 1, in the utility model embodiment, particularly, the second Pressure testing mouth 4 is arranged at the side of the close guiding valve relief opening 311 of the exhaust cavity of housing 1.
Above-mentionedly to arrange, the accuracy of the exhaust pressure value that the second pressure transducer records can be guaranteed on the one hand, farthest can to ensure that the exhaust pressure value detected is equal with system back pressure on the other hand, thus be convenient to the precision of follow-up slide valve assembly adjustment further.
As shown in Figure 3 and Figure 4, in the utility model embodiment, particularly, compressor comprises multiple impulse mouth 313, and multiple impulse mouth 313 is arranged along the width direction interval of pilot groove 312.And one end away from pilot groove 312 of multiple impulse mouth 313 is all corresponding with helical groove 21 arranges.
Above-mentionedly to arrange, utilize multiple impulse mouth 313 can be convenient to the flowing of gas, improve the accuracy of the force value detected.
In the utility model embodiment, particularly, the sectional shape of impulse mouth 313 is circular.Impulse mouth 313 is arranged in parallel with the boundary line of guiding valve relief opening 311 and one end away from pilot groove 312 of impulse mouth 313 is corresponding with helical groove 21 arranges.
In the utility model embodiment, compression end of a period pressure is mainly guided to pilot groove 312 to be communicated with the first impulse mouth by impulse mouth 313, as long as therefore the offering position and can meet the arbitrary position guided to by compression end of a period pressure within pilot groove 312 of impulse mouth 313.
As shown in Figure 1, in the utility model embodiment, particularly, the first Pressure testing mouth 5 is arranged on the sidewall matched with slide valve assembly 3 of housing 1.
Fig. 8 shows the curve synoptic diagram that compressor is in deficient compressive state, and Fig. 9 shows the curve synoptic diagram that compressor is in overcompression state.As shown in Figure 8 and Figure 9, along with the movement of slide valve assembly 3, the pressure that first Pressure testing mouth 5 detects always be compression end of a period pressure and exhaust pressure between fluctuate, as shown in Figure 1, first Pressure testing mouth 5 is arranged on the sidewall matched with slide valve assembly 3 of housing 1, the second Pressure testing mouth 4 for measuring exhaust pressure is arranged on the exhaust cavity of housing 1 near the position of guiding valve relief opening 311, by contrasting with exhaust pressure, can determine that the pressure utilizing impulse mouth 313 to draw is in overcompression or deficient compressive state thus finally determines compression end of a period gas pressure value, like this by contrasting the size of two force value detected, just can regulating slide valve movement direction, until compression end of a period gas pressure value is equal with exhaust pressure.
In the utility model embodiment, compressor also comprises the drive unit for driving the relative screw rotor 2 of slide valve assembly 3 to move axially.
Drive unit is stepper motor or hydraulic jack.Utilize in the process of drive unit spool control valve assembly 3, only need by the first pressure transducer and the second pressure transducer, the compression end of a period gas pressure value detected and exhaust pressure to be contrasted in program, when two force value are different, then spool control valve body 31 moves and carries out increment of load or off-load, time identical, then guiding valve body 31 position is fixed, and without the need to carrying out detection and control specially to the position of guiding valve body 31.
Even if above-mentioned control mode also can regulate the interior volume specific ratio of compressor accurately when working conditions change, the adjustment of slide valve assembly 3 does not need and other dimension relationships, regulative mode is simple, substantially can eliminate overcompression and under-voltage contracting, reduces the exhaust loss of compressor.
The utility model additionally provides a kind of interior volume specific ratio regulating method of compressor, and interior volume specific ratio regulating method adopts aforesaid compressor to regulate, and interior volume specific ratio regulating method comprises:
The first pressure transducer is utilized to detect the step of the compression end of a period gas pressure of compression chamber;
The second pressure transducer is utilized to detect the step of the exhaust pressure of exhaust cavity.
Below specific implementation method of the present utility model is described:
Refrigerant gas enters helical groove 21 from intakeport through the direction shown in arrow A, star-wheel 8 and guiding valve body 31, the common sealing screw groove 21 of housing 1 at the end of air-breathing, then the gas being positioned at helical groove 21 compresses along with the rotation of star-wheel 8, enclosed volume internal pressure raises, when on front side of the boundary line of guiding valve relief opening 311 and the tooth of helical groove 21, profile line 21a overlaps, pressure in helical groove 21 reaches maximum and is compression end of a period pressure, and screw rotor 2 and star-wheel 8 are rotated further, and start exhaust.
From above description, can find out, the utility model the above embodiments achieve following technique effect: compressor comprises housing, screw rotor and slide valve assembly, and screw rotor is arranged on the inside of housing, form compressed-air actuated compression chamber between screw rotor and housing, slide valve assembly be arranged on housing inside and along the axially movably setting of screw rotor, compressor also comprises the first Pressure testing mouth be communicated with compression chamber, first pressure transducer and controller, first pressure transducer is arranged on the first Pressure testing mouth and sentences the gas pressure detecting compression chamber, first pressure transducer is electrically connected with controller, above-mentionedly to arrange, gas pressure value at the end of utilizing the first pressure transducer being arranged on the first Pressure testing mouth place directly can draw compression in compression chamber and calculating without using empirical correlation etc., therefore the structure of this compressor is simple, gas pressure value is accurate, further, because above-mentioned gas pressure value is accurate, the follow-up degree of regulation that can control interior volume specific ratio better.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (9)
1. a compressor, described compressor comprises:
Housing (1), the relief opening (11) that described housing (1) has exhaust cavity and is communicated with described exhaust cavity;
Screw rotor (2), is arranged on the inside of described housing (1), forms compression chamber between described screw rotor (2) and described housing (1);
Slide valve assembly (3), described slide valve assembly (3) is arranged on the inside of described housing (1) and along the axially movably setting of described screw rotor (2), it is characterized in that, described compressor also comprises:
First Pressure testing mouth (5), described first Pressure testing mouth (5) is communicated with the end of described compression chamber;
First pressure transducer, described first pressure transducer is arranged on described first Pressure testing mouth (5) and sentences the compression end of a period gas pressure detecting described compression chamber;
Second Pressure testing mouth (4), described second Pressure testing mouth (4) is communicated with described exhaust cavity;
Second pressure transducer, described second pressure transducer is arranged on described second Pressure testing mouth (4) and sentences the exhaust pressure detecting described exhaust cavity;
Controller, described controller is connected with described first pressure transducer and the second pressure transducer respectively, and described controller controls the movement of described slide valve assembly according to the exhaust pressure of described compression end of a period gas pressure and described exhaust cavity.
2. compressor according to claim 1, is characterized in that, described compressor also comprises gas channel, and described first Pressure testing mouth (5) is communicated with described compression chamber by described gas channel.
3. compressor according to claim 2, is characterized in that, the guiding valve relief opening (311) that described slide valve assembly (3) comprises guiding valve body (31) and is communicated with described relief opening (11);
Described compressor also comprises:
Pilot groove (312), described pilot groove (312) is arranged on the upper and axis along described guiding valve body (31) of described guiding valve body (31) and extends;
At least one impulse mouth (313), one end of described impulse mouth (313) is communicated with described pilot groove (312), and the other end of described impulse mouth (313) is communicated with described compression chamber;
Wherein, described impulse mouth (313) and described pilot groove (312) form described gas channel.
4. compressor according to claim 3, is characterized in that, described impulse mouth (313) is along the through setting of radial direction of described guiding valve body (31).
5. compressor according to claim 3, is characterized in that, described second Pressure testing mouth (4) is arranged at the side of the close described guiding valve relief opening (311) of the described exhaust cavity of described housing (1).
6. compressor according to claim 3, it is characterized in that, described screw rotor (2) has helical groove (21), described compressor comprises multiple described impulse mouth (313), and multiple described impulse mouth (313) arranges along the width direction interval of described pilot groove (312) and one end away from described pilot groove (312) of multiple described impulse mouth (313) is all corresponding with described helical groove (21) arranges.
7. compressor according to any one of claim 1 to 6, is characterized in that, described first Pressure testing mouth (5) is arranged on the sidewall matched with described slide valve assembly (3) of described housing (1).
8. compressor according to any one of claim 1 to 6, is characterized in that, described compressor also comprises the drive unit for driving the relatively described screw rotor (2) of described slide valve assembly (3) to move axially.
9. compressor according to claim 8, is characterized in that, described drive unit is stepper motor or hydraulic jack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420847778.1U CN204371677U (en) | 2014-12-25 | 2014-12-25 | Compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420847778.1U CN204371677U (en) | 2014-12-25 | 2014-12-25 | Compressor |
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| Publication Number | Publication Date |
|---|---|
| CN204371677U true CN204371677U (en) | 2015-06-03 |
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| CN201420847778.1U Active CN204371677U (en) | 2014-12-25 | 2014-12-25 | Compressor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105782036A (en) * | 2014-12-25 | 2016-07-20 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor and internal volume ratio adjusting method for compressor |
| CN106762633A (en) * | 2017-01-10 | 2017-05-31 | 麦克维尔空调制冷(苏州)有限公司 | A kind of multiscrew formula determines frequency refrigeration compressor |
| CN108005905A (en) * | 2017-12-19 | 2018-05-08 | 江南大学 | A kind of double-screw compressor pressure test mechanism |
-
2014
- 2014-12-25 CN CN201420847778.1U patent/CN204371677U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105782036A (en) * | 2014-12-25 | 2016-07-20 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor and internal volume ratio adjusting method for compressor |
| CN106762633A (en) * | 2017-01-10 | 2017-05-31 | 麦克维尔空调制冷(苏州)有限公司 | A kind of multiscrew formula determines frequency refrigeration compressor |
| CN108005905A (en) * | 2017-12-19 | 2018-05-08 | 江南大学 | A kind of double-screw compressor pressure test mechanism |
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