CN218266342U

CN218266342U - Variable-capacity compressor and air conditioning system

Info

Publication number: CN218266342U
Application number: CN202222242194.9U
Authority: CN
Inventors: 赵旭敏; 苗旺; 阙沛祯; 何庆南; 牛玉婷
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2022-08-24
Filing date: 2022-08-24
Publication date: 2023-01-10
Anticipated expiration: 2032-08-24

Abstract

The utility model provides a variable volume compressor and air conditioning system, variable volume compressor includes: the gas diffusion device comprises a first cylinder, a first slip sheet and a first partition plate, wherein a slip sheet groove is formed in the first cylinder, at least part of the first slip sheet is arranged in the slip sheet groove, a slip sheet tail cavity is further formed in the first cylinder, the slip sheet tail cavity is communicated with the slip sheet groove, an expansion cavity is formed in the first partition plate, and can be communicated with the slip sheet tail cavity to guide gas in the slip sheet tail cavity into the expansion cavity. According to the utility model discloses form the dilatation mechanism to gleitbretter tail chamber dilatation, can increase the effective volume in gleitbretter tail chamber by a wide margin to can effectively reduce the pressure pulsation in conventional operating mode varactor tail chamber, further high-frequency vibration and the noise that reduces the compressor.

Description

Variable-capacity compressor and air conditioning system

Technical Field

The utility model relates to a compressor technical field, concretely relates to varactor compressor and air conditioning system.

Background

Along with the increasing growth of the multi-split air conditioner market, the capacity output range of a multi-split air conditioner system to a compressor is wider and wider, particularly, the output capacity of the compressor required when the multi-split air conditioner is only provided with one indoor unit is very small, the minimum capacity output by a common double-cylinder variable frequency compressor cannot meet the system requirement, so that the output cold quantity is excessive, the compressor is frequently started and stopped, the power consumption of the compressor is high, and meanwhile, when the frequency of the compressor is too low, the volumetric efficiency and the motor efficiency of the compressor are greatly attenuated, so that the low-frequency operation energy efficiency of the compressor is low. In order to obtain the output of the high efficiency of low cold volume on original basis, frequency conversion varactor compressor has obtained quick development, and frequency conversion varactor compressor adopts the double-cylinder structure promptly, through increasing switching structure, realizes that frequency conversion compressor single cylinder, double-cylinder two kinds of mode operation. Double cylinders are used under heavy load, and a single cylinder is used under light load. Similar function patents such as patents CN201410805892, CN101091063A, CN113757115a, etc. all refer to the variable capacity function of the compressor. To achieve this function, the vane slot of the variable displacement cylinder is sealed to introduce high or low pressure into the vane slot to control the movement of the vane. However, when the double-cylinder operation of the variable-capacity compressor is carried out, because the variable-capacity slide sheet reciprocates at a high speed in the sealed slide sheet groove, the volume of the tail cavity of the sealed slide sheet groove is small, and the internal pressure pulsation is larger than that of the suction and exhaust of the compressor, the high-frequency vibration noise of the compressor is aggravated; especially, the compressor starts the easy hydrops of gleitbretter groove tail chamber after low temperature environment stews for a long time, and the pressure pulsation in gleitbretter tail chamber increases by a wide margin this moment, and the pulsation value is greater than the minimum pressure that the single double-cylinder of varactor compressor switched, leads to varactor mechanism start-up phase to become invalid, and the single double-cylinder of compressor frequently switches, and the gleitbretter produces the striking and sends the abnormal sound, seriously influences user experience.

Because there is pressure pulsation in the gleitbretter tail chamber of the variable volume compressor among the prior art, and lead to producing technical problem such as high-frequency vibration and noise, consequently the utility model discloses research and design a variable volume compressor and air conditioning system.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming the gleitbretter tail chamber of the varactor compressor among the prior art and there is pressure pulsation, and leads to producing the defect of high-frequency vibration and noise to a varactor compressor and air conditioning system are provided.

In order to solve the above problem, the utility model provides a variable capacity compressor, it includes:

the gas diffusion device comprises a first cylinder, a first slip sheet and a first partition plate, wherein a slip sheet groove is formed in the first cylinder, at least part of the first slip sheet is arranged in the slip sheet groove, a slip sheet tail cavity is further formed in the first cylinder, the slip sheet tail cavity is communicated with the slip sheet groove, an expansion cavity is formed in the first partition plate, and can be communicated with the slip sheet tail cavity to guide gas in the slip sheet tail cavity into the expansion cavity.

In some embodiments, further comprising a first roller and a first bearing, the first cylinder having a hollow cavity, the first roller disposed in the hollow cavity,

the first bearing is located between the first cylinder and the first partition plate, an expansion channel is arranged on the first bearing, one end of the expansion channel can be communicated with the sliding piece tail cavity, and the other end of the expansion channel is communicated with the expansion cavity.

In some embodiments, the trailing slide cavity comprises a first trailing slide cavity in communication with a radially outer end of the slide slot and a second trailing slide cavity, the first slide comprising a leading portion engageable with the first roller and a trailing portion movable into the first trailing slide cavity; the second sliding vane tail cavity is communicated with the first sliding vane tail cavity.

In some embodiments, the second slider tail cavity includes a first connecting slot and a first cavity, the first connecting slot communicating with the first slider tail cavity, the first cavity communicating with the first connecting slot, the first cavity communicating with the volume expansion channel on the first bearing.

In some embodiments, in a cross section of the first cylinder, the first cavity is in a strip-shaped groove structure, one end of the first cavity is communicated with the first connecting groove, the other end of the first cavity extends in a direction away from the first connecting groove, and the other end of the first cavity is located on one side of the slide sheet groove; the first connecting groove is also in a strip-shaped groove structure, one end of the first connecting groove is communicated with the first cavity, and the other end of the first connecting groove is positioned on the other side of the slide sheet groove; namely, the other end of the first connecting groove and the other end of the first cavity are positioned at two sides of the sliding sheet groove, and the sliding sheet groove is positioned in the middle; the first sliding vane tail cavity is a through hole which penetrates through the first cylinder in the axial direction, and at least part of the structure of the first sliding vane tail cavity is located inside the first connecting groove.

In some embodiments, in a cross-sectional plane through the axis of the first cylinder, the first cavity includes a first portion and a second portion, both of which are groove structures, the first portion communicating with the second portion, the first portion being located radially inward of the second portion, the second portion communicating the first communication groove with the first portion, the first portion communicating the second portion with the flash passage.

In some embodiments, the first portion and the second portion are both slots extending in an axial direction of the first cylinder, and an axial height of the first portion is less than an axial height of the second portion; the first part extends along the axial direction from the end surface of the first cylinder, which is connected with the first bearing, and the second part also extends along the axial direction from the end surface of the first cylinder, which is connected with the first bearing; the dilatation passageway is from the axial one terminal surface of first bearing runs through to the groove of axial another terminal surface along the axial.

In some embodiments, the first cavity has an area, S, in a cross-section of the first cylinder; the cross section of the dilatation channel is a round hole, the diameter of the hole is D, and S/3 is less than or equal to 1/4 pi D ² ≤S。

In some embodiments, the second slide piece tail cavity further includes a pressure communicating groove, the pressure communicating groove is communicated with the first communicating groove, and the pressure communicating groove can be filled with gas with pressure to act on the tail portion of the first slide piece through the first communicating groove and the first slide piece tail cavity, so as to control locking or unlocking of the first slide piece, and thus control unloading or loading of the first roller.

In some embodiments, the variable displacement compressor further includes a pressure switching channel, the pressure switching channel is capable of introducing gas under pressure from outside the variable displacement compressor, the pressure communication groove is a through hole that penetrates from one axial end face of the first cylinder to the other axial end face, and a communication hole is further provided inside the first cylinder, one end of the communication hole communicates with the pressure switching channel, and the other end of the communication hole communicates with the pressure communication groove.

In some embodiments, the pressure communication groove is a kidney-shaped hole in a cross section of the first cylinder.

In some embodiments, the expansion cavity is an accommodating cavity disposed inside the first partition plate, the first partition plate is further provided with a second communicating groove, one end of the second communicating groove is communicated with the expansion channel of the first bearing, and the other end of the second communicating groove is communicated with the expansion cavity.

In some embodiments, the expansion cavity is formed by extending from an axial end face of the first partition plate, which is connected with the first cover plate, to the other axial end face, and the first cover plate forms a seal for the expansion cavity.

The utility model also provides an air conditioning system, it includes preceding arbitrary the varactor compressor.

The utility model provides a pair of varactor compressor and air conditioning system has following beneficial effect:

1. the utility model discloses an expand the appearance chamber that sets up on first baffle, and the dilatation chamber can communicate with gleitbretter tail chamber to effectively form the dilatation mechanism to gleitbretter tail chamber dilatation, can increase the effective volume in gleitbretter tail chamber by a wide margin, thereby can effectively reduce the pressure pulsation in conventional operating mode varactor tail chamber, further reduce the high-frequency vibration and the noise of compressor; the utility model also arranges a dilatation channel on the first bearing connected with the first cylinder, one end of the dilatation channel can be communicated with the tail cavity of the slip sheet, and the other end is communicated with the dilatation cavity to form a dilatation communication path; the utility model discloses still through the design of second gleitbretter tail chamber, can further enlarge the volume to original first gleitbretter tail chamber, play the effect of further dilatation, further reduce the pressure pulsation that effectively reduces conventional operating mode varactor tail chamber, reduce the high-frequency vibration and the noise of compressor, can effectively reduce the pressure pulsation when varactor cavity (low temperature static start) takes liquid simultaneously, avoid the gleitbretter striking that varactor mechanism became invalid and lead to producing the abnormal sound; the utility model discloses still through the design of first intercommunication groove, can play when intercommunication first chamber and first gleitbretter tail chamber, first intercommunication groove still extends towards the opposite direction in first chamber, can make first intercommunication groove form the passageway of further dilatation, further reduces the pressure pulsation in gleitbretter tail chamber, reduces the noise; the utility model also can lead external pressure into the tail cavity of the first slip sheet through the pressure communicating groove by setting the pressure communicating groove so as to control the first slip sheet, and further expand the volume through the pressure communicating groove, further reduce the pressure pulsation of the tail cavity of the slip sheet and reduce the noise;

2. the utility model discloses still through injecing the relation between dilatation passageway D and the first chamber cross-sectional area S, can make the pressure pulsation in varactor gleitbretter tail chamber be in relatively less level, avoid taking the pressure pulsation sudden change that liquid starts varactor gleitbretter tail chamber, solve varactor mechanism start phase and become invalid, the single double-cylinder of compressor frequently switches, the gleitbretter striking that varactor mechanism became invalid and leads to produces the problem of abnormal sound, promotes user' S result of use.

Drawings

Fig. 1 is a partial cross-sectional view of a pump body portion of a variable displacement compressor of the present invention;

FIG. 2 is a block diagram of the air conditioning system with the variable capacity compressor of the present invention;

fig. 3 is a schematic cross-sectional view of the lower end surface of the variable displacement cylinder of the variable displacement compressor of the present invention;

fig. 4 is a pressure pulsation curve diagram when the trailing cavity of the sliding vane of the variable displacement compressor runs with liquid.

The reference numbers are given as:

1. a housing assembly; 2. a motor stator; 3. a motor rotor; 4. a crankshaft; 5. an upper bearing; 6. an upper cylinder; 7. an upper roller; 8. a second separator; 9. a first cylinder; 91. a slide groove; 92. a communicating hole; 10. a first roller; 11. a first bearing; 12. a first cover plate; 12a, a first separator; 13. a lower cover; 14. a pin spring; 15. a pin; 16. a first slip sheet; 161. a head portion; 162. a tail portion; 17. an upper sliding sheet; 18. a high pressure channel; 19. an air suction pipe is arranged below the liquid separator; 20. an upper air suction pipe of the liquid separator; 21. a pressure control line; 22. a low-pressure solenoid valve; 23. a high-pressure solenoid valve; 24. an air conditioning system; 25. a sliding vane tail cavity; 25a, an expansion cavity; 25b, a second communicating groove; 26. a capacity expansion channel; 27. an upper cover assembly; 28. a dispenser assembly; 81. a pressure switching channel;

251. a first sliding vane tail cavity; 252. a second sliding vane tail cavity; 2521. a first connecting groove; 2522. a first chamber; 25221. a first portion; 25222. a second portion; 2523. the pressure is communicated with the groove.

Detailed Description

As shown in fig. 1-4, the utility model provides a varactor rolling rotor formula compressor, compressor have a varactor cylinder, can realize uninstallation and operation, and a continuous moving cylinder in addition, compressor have single cylinder operation and double-cylinder operation two kinds of modes.

The cavity at the tail part of the sliding sheet of the variable-volume cylinder in the compressor is in a sealed state and is not communicated with high-pressure gas in the shell. The head of the pin 15 is provided with a spring which is positioned in a pin hole of the first bearing 11, the upper end of the pin hole is communicated with the tail cavity 25 of the sliding vane, and the lower end of the pin hole is communicated with high-pressure oil in the shell through the first partition plate 12a and the high-pressure channel 18 of the first cover plate 12 in sequence; when the compressor operates in a double-cylinder mode, the high-pressure electromagnetic valve 23 is opened, the low-pressure electromagnetic valve 22 is closed, the tail cavity 25 of the sliding vane is communicated with the exhaust of the compressor, when the compressor operates in the double-cylinder mode, the variable-volume sliding vane operates in a high-speed reciprocating mode in the sealed sliding vane groove, and because the tail cavity of the sealed sliding vane groove is small in volume, the internal pressure pulsation of the variable-volume sliding vane is large relative to the suction and exhaust of the compressor, the high-frequency vibration noise of the compressor is aggravated; the compressor starts the easy hydrops of gleitbretter groove tail chamber after low temperature environment stews for a long time, and the pressure pulsation in gleitbretter tail chamber increases by a wide margin this moment, and the pulsation value is greater than the minimum pressure that the single double-cylinder of varactor compressor switched, leads to varactor mechanism start-up phase to become invalid, and the single double-cylinder of compressor frequently switches, and the gleitbretter produces the striking and sends the abnormal sound, seriously influences user experience.

In order to solve the problem that the volume of a tail cavity of an enclosed slide sheet groove is smaller, and the internal pressure pulsation of the slide sheet groove is larger than the suction and exhaust of a compressor, so that the high-frequency vibration noise of the compressor is aggravated, the utility model provides a variable-capacity compressor with a slide sheet tail cavity expansion and pressure stabilization structure, the effective volume of the tail cavity of the slide sheet groove can be greatly increased through the expansion of the tail cavity of the variable-capacity slide sheet groove, the ratio of the effective volume of a slide sheet to the tail cavity is reduced, the pressure pulsation of the tail cavity of the variable-capacity slide sheet under the conventional working condition is effectively reduced, and the high-frequency vibration and the noise of the compressor are further reduced; varactor gleitbretter groove tail chamber dilatation is for setting up dilatation passageway 26 respectively on first bearing 11 and first baffle 12a, dilatation passageway 26 communicates with gleitbretter tail chamber 25 and dilatation chamber 25a respectively for the effective volume of gleitbretter tail chamber 25 promotes by a wide margin, has reduced the proportion of gleitbretter with varactor tail chamber effective volume, and the pressure pulsation of gleitbretter tail chamber 25 will reduce by a wide margin when the high-speed reciprocal operation of sealed gleitbretter inslot, and then reduces the high-frequency vibration and the noise of compressor. The expansion cavity 25a is a sealed cavity formed by the cavity of the first partition plate 12a and the first cover plate 12.

The utility model provides a variable capacity compressor, it includes:

the gas diffusion device comprises a first air cylinder 9, a first sliding piece 16 and a first partition plate 12a, wherein a sliding piece groove 91 is formed in the first air cylinder 9, at least part of the first sliding piece 16 is arranged in the sliding piece groove 91, a sliding piece tail cavity 25 is further formed in the first air cylinder 9, the sliding piece tail cavity 25 is communicated with the sliding piece groove 91, an expansion cavity 25a is formed in the first partition plate 12a, and the expansion cavity 25a can be communicated with the sliding piece tail cavity 25 to guide gas in the sliding piece tail cavity 25 into the expansion cavity 25a. The utility model discloses an expand appearance chamber that sets up on first baffle (first baffle does the utility model discloses a set up and expand the structure that holds the chamber and add), and the dilatation chamber can communicate with gleitbretter tail chamber to effectively form the dilatation mechanism to gleitbretter tail chamber dilatation, can increase the effective volume in gleitbretter tail chamber by a wide margin, thereby can effectively reduce the pressure pulsation in conventional operating mode varactor gleitbretter tail chamber, further high-frequency vibration and the noise that reduces the compressor.

In some embodiments, further comprising a first roller 10 and a first bearing 11, said first cylinder 9 having a hollow cavity, said first roller 10 being disposed in said hollow cavity,

the first bearing 11 is located between the first cylinder 9 and the first partition plate 12a, an expansion channel 26 is arranged on the first bearing 11, one end of the expansion channel 26 can be communicated with the sliding piece tail cavity 25, and the other end of the expansion channel is communicated with the expansion cavity 25a.

The utility model discloses a set up the dilatation passageway on the first bearing that meets with first cylinder to and set up on the first baffle that meets with first bearing and expand the appearance chamber, can communicate through dilatation passageway one end and gleitbretter tail chamber, the other end and dilatation chamber intercommunication, thereby effectively form the dilatation mechanism to gleitbretter tail chamber dilatation, can increase the effective volume in gleitbretter tail chamber by a wide margin, thereby can effectively reduce the pressure pulsation in conventional operating mode varactor gleitbretter tail chamber, further high-frequency vibration and the noise that reduces the compressor.

The utility model provides a following technical problem:

1. the expansion of the tail cavity of the variable-capacity sliding vane groove can greatly increase the effective volume of the tail cavity of the sliding vane groove, reduce the ratio of the effective volumes of the sliding vane and the tail cavity, effectively reduce the pressure pulsation of the tail cavity of the variable-capacity sliding vane under the conventional working condition and further reduce the high-frequency vibration and noise of the compressor;

2. through the diameter D who prescribes a limit to the dilatation passageway, can make the pressure pulsation in varactor gleitbretter tail chamber be in relatively less level, pressure pulsation when can effectively reducing varactor gleitbretter chamber area liquid avoids the gleitbretter striking that varactor mechanism became invalid and leads to produce the abnormal sound.

Has the beneficial effects that:

the utility model discloses a set up varactor gleitbretter groove tail chamber dilatation mechanism, can increase the effective volume of gleitbretter groove tail chamber by a wide margin, can effectively reduce the pressure pulsation of conventional operating mode varactor gleitbretter tail chamber, the further high-frequency vibration and the noise that reduce the compressor; through the diameter D who prescribes a limit to the dilatation passageway, can make the pressure pulsation in varactor gleitbretter tail chamber be in relatively less level, avoid taking the pressure pulsation sudden change of liquid start-up varactor tail chamber, solve the gleitbretter striking that varactor mechanism became invalid and lead to and produce the abnormal sound, promote user's result of use.

Fig. 2 is a schematic structural view of a rotary compressor according to an embodiment 1 of the present invention. The rotary compressor comprises a shell assembly 1, a motor stator 2, a motor rotor 3 and a pump body assembly, wherein an exhaust pipe is arranged on an upper cover assembly 27 of the shell assembly 1, the motor stator 2 is fixed on the inner wall of the shell assembly 1, and the motor rotor 3 is fixed on a crankshaft 4 of the pump body assembly and is arranged in an inner hole of the motor stator 2. The pump body assembly is welded and fixed on the shell assembly 1. The pump body assembly comprises an upper bearing 5, a lower bearing (a first bearing 11) and a crankshaft 4, an upper cylinder 6 and a lower cylinder (a first cylinder 9) are arranged between the upper bearing 5 and the first bearing 11, a second partition plate 8 is arranged between the upper cylinder 6 and the first cylinder 9 for separation, an upper roller 7 and a lower roller (a first roller 10) are respectively installed in the upper cylinder 6 and the first cylinder 9, and the upper roller 7 and the lower roller are respectively sleeved on the upper eccentric portion and the lower eccentric portion of the crankshaft 4. The upper sliding sheet 17 and the lower sliding sheet (a first sliding sheet 16) are arranged in the sliding sheet grooves in the upper air cylinder 6 and the lower air cylinder, the head parts of the upper sliding sheet 17 and the lower sliding sheet are respectively abutted to the outer diameters of the upper roller 7 and the lower roller, and the volume cavity in the air cylinder is divided into a high-pressure cavity and a low-pressure cavity, so that the compression function of the compressor is realized. A pin 15 is arranged in the first bearing 11 corresponding to the bottom of the first sliding sheet 16, a pin spring 14 is arranged at the pin head part, and the pin spring is limited between the upper end of the pin hole and the pin head part; a lower partition plate (a first partition plate 12 a) is mounted at the lower end of the first bearing 11, a lower cover plate (a first cover plate 12) covers the lower end of the lower partition plate, and an expansion cavity 25a is formed by the lower cover plate and a cavity of the lower cover plate; a liquid distributor component 28 is arranged outside the shell component 1, and two bent pipes (an upper air suction pipe 20 and a lower air suction pipe 19 of the liquid distributor) of the liquid distributor component 28 are respectively connected with air suction ports of the upper air cylinder 6 and the lower air cylinder. A lower cover 13 is mounted on the bottom of the housing assembly 1 and an upper cover assembly 27 is mounted on the top of the housing assembly, thus forming a sealed chamber.

When the compressor runs, the upper cylinder and the lower cylinder suck the refrigerant from the liquid distributor assembly 28, the refrigerant enters the cylinders to be compressed, the compressed high-pressure refrigerant enters the cavity of the shell and enters the cavity at the upper part of the motor through the circulation hole between the motor stator and the motor rotor and the rotor circulation hole, the refrigerant is finally discharged out of the compressor from the exhaust pipe of the upper cover assembly 27 and enters the air conditioning system 24, and the refrigerant is subjected to circulating heat exchange by the air conditioning system 24 and then enters the liquid distributor assembly 28 again, so that a cycle is completed. If the high-pressure electromagnetic valve 23 is closed and the low-pressure electromagnetic valve 22 is opened simultaneously in the running process of the compressor, the compressor realizes the running in a single-cylinder mode, and if the high-pressure electromagnetic valve 23 is opened and the low-pressure electromagnetic valve 22 is closed simultaneously, the compressor realizes the running in a double-cylinder mode;

fig. 3 is the utility model discloses end surface cross-sectional view under compressor pump body varactor jar. Varactor cylinder gleitbretter groove afterbody is encapsulated situation (conventional cylinder gleitbretter afterbody is open mode), and 16 afterbody of first gleitbretter forms varactor gleitbretter tail chamber (gleitbretter tail chamber 25) with gleitbretter groove afterbody.

When the compressor operates in a double-cylinder mode, the first sliding vane 16 operates in a sliding vane groove in a high-speed reciprocating mode, and because the variable-capacity sliding vane operates in a sealed sliding vane groove in a high-speed reciprocating mode, the volume of a tail cavity of the sealed sliding vane groove is small, pressure pulsation of the tail cavity of the sealed sliding vane groove is large relative to suction and exhaust of the compressor, and high-frequency vibration noise of the compressor is aggravated.

Fig. 1 is a schematic partial cross-sectional view of a pump body of a compressor according to an embodiment of the present invention. In order to solve because inclosed sliding vane groove tail chamber volume is less, its internal pressure pulsation is big relatively the compressor suction and exhaust, can lead to the problem of compressor high-frequency vibration noise aggravation like this, the utility model provides a variable capacity compressor of gleitbretter tail chamber expansion steady voltage structure. The cavity of the first partition 12a and the first cover 12 form an expansion chamber 25a. Set up dilatation passageway 26 on primary shaft holds 11 and first baffle 12a respectively, dilatation passageway 26 communicates with gleitbretter tail chamber 25 and dilatation chamber 25a respectively for the effective volume of gleitbretter tail chamber 25 promotes by a wide margin, has reduced the proportion of gleitbretter with varactor gleitbretter tail chamber effective volume, and the pressure pulsation of varactor tail chamber 25 will reduce by a wide margin when varactor gleitbretter moves at high-speed reciprocating in sealed slide groove, and then reduces the high frequency vibration and the noise of compressor.

The volume of a sealed slide sheet groove tail cavity is smaller, and the volume of a slide sheet is larger than that of the slide sheet groove tail cavity, so that when a slide sheet of a variable-volume cylinder reciprocates at a high speed in a slide sheet groove, the internal pressure pulsation of the slide sheet is larger relative to the suction and exhaust of a compressor, and the problem of aggravated high-frequency vibration noise of the compressor is caused; for solving the problem, the utility model discloses set up and enlarged appearance chamber 25a and dilatation passageway 26, increased the volume in slide groove tail chamber by a wide margin in other words, reduced the gleitbretter and the proportion of occupying in varactor chamber, reduced the pressure pulsation of gleitbretter when the high-speed reciprocating motion of slide inslot.

The utility model discloses mainly use and compressor low temperature at the compressor double-cylinder operation in-process and the start-up of standing still take two in-processes of liquid, if take liquid to start can't overcome pressure pulsation, the pressure pulsation in gleitbretter tail chamber increases by a wide margin, and the pulsation value is greater than the minimum pressure that the single double-cylinder of varactor compressor switched, leads to varactor mechanism start-up phase to become invalid, and the single double-cylinder of compressor frequently switches.

In some embodiments, the slider tail cavity 25 comprises a first slider tail cavity 251 and a second slider tail cavity 252, the first slider tail cavity 251 communicates with the radially outer end of the slider slot 91, the first slider 16 comprises a leading portion 161 and a trailing portion 162, the leading portion 161 is engageable with the first roller 10, and the trailing portion 162 is movable into the first slider tail cavity 251; the second slider tail cavity 252 communicates with the first slider tail cavity 251.

The utility model discloses still through the design of second gleitbretter tail chamber, can further enlarge the volume to original first gleitbretter tail chamber, play the effect of further dilatation, further reduce the pressure pulsation that effectively reduces conventional operating mode varactor tail chamber, reduce the high-frequency vibration and the noise of compressor, can effectively reduce the pressure pulsation when varactor gleitbretter chamber (low temperature static start) tape liquid simultaneously, avoid the gleitbretter striking that varactor mechanism became invalid and lead to produce the abnormal sound.

In some embodiments, the second vane tail cavity 252 includes a first connecting slot 2521 and a first cavity 2522, the first connecting slot 2521 being in communication with the first vane tail cavity 251, the first cavity 2522 being in communication with the first connecting slot 2521, the first cavity 2522 being in communication with the expansion channel 26 on the first bearing 11. The utility model discloses still through the design of first intercommunication groove, can play when intercommunication first chamber and first gleitbretter tail chamber, first intercommunication groove still extends towards the opposite direction in first chamber, can make first intercommunication groove form the passageway of further dilatation, further reduces the pressure pulsation in gleitbretter tail chamber, reduces the noise; the first cavity can communicate gas to the capacity expansion channel and the capacity expansion cavity for effective capacity expansion, so that pressure pulsation is effectively reduced, and noise is reduced.

In some embodiments, in the cross section of the first cylinder 9, the first cavity 2522 has a strip-shaped groove structure, one end of the first cavity 2522 is communicated with the first connecting groove 2521, the other end extends away from the first connecting groove 2521, and the other end of the first cavity 2522 is located on one side of the vane groove 91; the first communicating groove 2521 is also in a strip-shaped groove structure, one end of the first communicating groove 2521 is communicated with the first cavity 2522, and the other end is located on the other side of the slide sheet groove 91; that is, the other end of the first connecting groove 2521 and the other end of the first cavity 2522 are located at both sides of the slide sheet groove 91, and the slide sheet groove 91 is located in the middle; the first sliding vane tail cavity 251 is a through hole penetrating along the axial direction of the first cylinder 9, and at least part of the structure of the first sliding vane tail cavity 251 is located inside the first connecting groove 2521.

The utility model discloses a first chamber is the structure in bar groove, can further form the passageway that can expand the gas volume, and first chamber extends towards one side direction in slide groove, and first connecting groove extends towards the opposite side direction in slide groove, can utilize the space of cylinder to set up different groove structures effectively to make each groove homoenergetic to be seted up to the biggest, the volume of increase dilatation passageway improves the dilatation effect.

In some embodiments, in the cross-sectional plane through the axis of the first cylinder 9, the first cavity 2522 includes a first portion 25221 and a second portion 25222, the first portion 25221 and the second portion 25222 each being a slot structure, the first portion 25221 communicating with the second portion 25222, the first portion 25221 being located radially inward of the second portion 25222, the first communicating slot 2521 and the first portion 25221 communicating through the second portion 25222 therebetween, the second portion 25222 communicating with the flash channel 26 through the first portion 25221. This is the utility model discloses a further preferred structural style in first chamber can form two grooves like this as shown in fig. 1, forms the step between the two, can dodge other such as pore structure as far as possible, and effectively utilized the material space of cylinder to the greatest extent, improves the dilatation effect when improving space utilization.

In some embodiments, the first portion 25221 and the second portion 25222 are both slots extending in the axial direction of the first cylinder 9, and the axial height of the first portion 25221 is less than the axial height of the second portion 25222; the first portion 25221 extends axially from the end face of the first cylinder 9 that meets the first bearing 11, and the second portion 25222 also extends axially from the end face of the first cylinder 9 that meets the first bearing 11; the expansion passage 26 is a groove that penetrates from one axial end surface of the first bearing 11 to the other axial end surface in the axial direction. The utility model discloses a first portion and second portion are preferred to be along axially extended's groove structure to highly different, thereby form the step hole, can dodge other parts, can also carry out effectual dilatation simultaneously.

In some embodiments, the first chamber 2522 has an area S in the cross-section of the first cylinder 9; the cross section of the expansion channel 26 is a circular hole with the diameter of D and satisfies that S/3 is less than or equal to 1/4 pi D ² S is less than or equal to S. The utility model discloses still through injecing the relation between dilatation passageway D and the first chamber cross-sectional area S, can make the pressure pulsation in varactor gleitbretter tail chamber be in relatively less level, avoid taking the pressure pulsation sudden change that liquid starts varactor gleitbretter tail chamber, solve varactor mechanism start phase and become invalid, the single double-cylinder of compressor frequently switches, the gleitbretter striking that varactor mechanism became invalid and leads to produces the problem of abnormal sound, promotes user' S result of use.

If the drift diameter D of the capacity expansion channel 26 is small, the capacity expansion channel can generate throttling when the pressure pulsation of the tail cavity of the variable-capacity sliding vane is large, particularly, the tail cavity of the sliding vane groove is easy to accumulate liquid when the compressor is started after standing for a long time in a low-temperature environment, the pressure pulsation of the tail cavity of the sliding vane is greatly increased (as shown in a curve with liquid pressure pulsation in fig. 4), the throttling of the capacity expansion channel 26 is more obvious, so that the pulsation value of the tail cavity 25 of the sliding vane is larger than the lowest pressure for switching single and double cylinders of the variable-capacity compressor, the starting stage of the variable-capacity mechanism fails, the single and double cylinders of the compressor are frequently switched, the sliding vane generates impact and abnormal sound, and the user experience is seriously influenced; in order to further optimize the pressure pulsation of the tail cavity of the variable-capacity sliding vane under the conventional working condition, according to the transverse (radial) sectional area S of the tail cavity of the variable-capacity sliding vane, the drift diameter D of the capacity expansion channel 26 is limited, the condition that S/3 is not less than 1/4 pi D2 is not more than S is met, the pressure pulsation of the tail cavity of the variable-capacity sliding vane under the conventional working condition can be further reduced, the pressure pulsation value is as low as 0.3bar (as a pressure pulsation curve after capacity expansion optimization of figure 4), high-frequency vibration and noise of a compressor excited by pulsation are further reduced, the using effect of a user is improved, the problem that the tail cavity of the starting sliding vane groove is prone to effusion after the compressor is kept stand in a low-temperature environment for a long time is solved, the problem that the pressure pulsation of the tail cavity of the sliding vane is greatly increased, the problem that the starting stage of the variable-capacity mechanism fails is solved, and the variable-capacity compressor can be smoothly started and operated.

In some embodiments, the second vane tail cavity 252 further includes a pressure communication groove 2523, the pressure communication groove 2523 is communicated with the first communication groove 2521, and the pressure communication groove 2523 is capable of introducing gas with pressure to act on the tail portion 162 of the first vane 16 through the first communication groove 2521 and the first vane tail cavity 251 to control locking or unlocking of the first vane 16, thereby controlling unloading or loading of the first roller 10. The utility model discloses still through the setting of pressure intercommunication groove, can let in external pressure to first gleitbretter tail chamber through pressure intercommunication groove to control first gleitbretter, still play the effect and the effect of further dilatation through pressure intercommunication groove, further reduce the pressure pulsation in gleitbretter tail chamber, noise reduction.

In some embodiments, the variable displacement compressor further includes a pressure switching passage 81, the pressure switching passage 81 is capable of introducing a gas under pressure from outside the variable displacement compressor, the pressure communication groove 2523 is a through hole penetrating from one end surface of the first cylinder 9 in the axial direction to the other end surface of the first cylinder in the axial direction, a communication hole 92 is further provided inside the first cylinder 9, one end of the communication hole 92 communicates with the pressure switching passage 81, and the other end communicates with the pressure communication groove 2523. This is the utility model discloses a pressure intercommunication groove's further preferred structural style and connectivity structure, the pressure intercommunication groove that runs through along the axial passes through the intercommunicating pore and outside pressure switching passageway intercommunication, can introduce the afterbody that pressure acted on first gleitbretter, plays the effect of effective control to the varactor.

In some embodiments, the pressure communication groove 2523 has a kidney-shaped hole structure in the cross section of the first cylinder 9. The utility model discloses a pressure intercommunication groove design is the structure in waist type hole, can effectively improve the volume in hole (especially for the round hole) to can further improve the dilatation effect, further reduce pressure pulsation, noise abatement.

In some embodiments, the expansion cavity 25a is a receiving cavity disposed inside the first partition plate 12a, and a second communicating groove 25b is further disposed on the first partition plate 12a, and one end of the second communicating groove 25b communicates with the expansion channel 26 of the first bearing 11, and the other end communicates with the expansion cavity 25a. This is the utility model discloses a preferred form that sets up in dilatation chamber can switch on the gas in the dilatation passageway to the dilatation chamber through second intercommunication groove, forms the effect of effective dilatation.

In some embodiments, the bearing further includes a first cover plate 12, the first cover plate 12 is disposed on an axial end surface of the first partition plate 12a facing away from the first bearing 11, so that the first partition plate 12a is sandwiched between the first bearing 11 and the first cover plate 12, the expansion cavity 25a is formed by extending from an axial end surface of the first partition plate 12a, which is connected to the first cover plate 12, toward a direction of another axial end surface, and the first cover plate 12 forms a seal with the expansion cavity 25a. The utility model discloses a setting of first apron can form effectual sealed effect to the dilatation chamber, and the processing that expands the chamber like this can easily realize, the utility model discloses the cost is lower, and can effectively reduce the pressure pulsation in the gleitbretter tail chamber of varactor compressor, reduces the noise of this department.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and any modifications, equivalents, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of the present invention. The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. A variable capacity compressor, characterized by: the method comprises the following steps:

the gas guide type gas cylinder is characterized by comprising a first cylinder (9), a first sliding vane (16) and a first partition plate (12 a), wherein a sliding vane groove (91) is formed in the first cylinder (9), at least part of the first sliding vane (16) is arranged in the sliding vane groove (91), a sliding vane tail cavity (25) is further formed in the first cylinder (9), the sliding vane tail cavity (25) is communicated with the sliding vane groove (91), an expansion cavity (25 a) is formed in the first partition plate (12 a), the expansion cavity (25 a) can be communicated with the sliding vane tail cavity (25), and therefore gas in the sliding vane tail cavity (25) is guided into the expansion cavity (25 a).

2. The variable capacity compressor of claim 1, wherein:

further comprising a first roller (10) and a first bearing (11), the first cylinder (9) having a hollow cavity, the first roller (10) being arranged in the hollow cavity,

the first bearing (11) is located between the first cylinder (9) and the first partition plate (12 a), an expansion channel (26) is arranged on the first bearing (11), one end of the expansion channel (26) can be communicated with the sliding piece tail cavity (25), and the other end of the expansion channel is communicated with the expansion cavity (25 a).

3. The variable capacity compressor of claim 2, wherein:

the slide tail cavity (25) comprises a first slide tail cavity (251) and a second slide tail cavity (252), the first slide tail cavity (251) is communicated with the radial outer side end of the slide groove (91), the first slide (16) comprises a head part (161) and a tail part (162), the head part (161) can be connected with the first roller (10), and the tail part (162) can movably extend into the first slide tail cavity (251); the second slider tail cavity (252) is in communication with the first slider tail cavity (251).

4. The variable capacity compressor of claim 3, wherein:

the second vane tail cavity (252) comprises a first connecting groove (2521) and a first cavity (2522), the first connecting groove (2521) is communicated with the first vane tail cavity (251), the first cavity (2522) is communicated with the first connecting groove (2521), and the first cavity (2522) is communicated with the expansion channel (26) on the first bearing (11).

5. The variable capacity compressor of claim 4, wherein:

in the cross section of the first cylinder (9), the first cavity (2522) is in a structure of a strip-shaped groove, one end of the first cavity (2522) is communicated with the first connecting groove (2521), the other end of the first cavity extends in a direction away from the first connecting groove (2521), and the other end of the first cavity (2522) is located on one side of the slide sheet groove (91); the first connecting groove (2521) is also in a strip-shaped groove structure, one end of the first connecting groove (2521) is communicated with the first cavity (2522), and the other end of the first connecting groove is positioned on the other side of the slide sheet groove (91); namely, the other end of the first connecting groove (2521) and the other end of the first cavity (2522) are positioned at two sides of the slide sheet groove (91), and the slide sheet groove (91) is positioned in the middle; the first sliding vane tail cavity (251) is a through hole which penetrates along the axial direction of the first cylinder (9), and at least part of the structure of the first sliding vane tail cavity (251) is positioned inside the first connecting groove (2521).

6. The variable capacity compressor of claim 4, wherein:

in an over-axis cross-section of the first cylinder (9), the first cavity (2522) comprises a first portion (25221) and a second portion (25222), the first portion (25221) and the second portion (25222) both being of a slotted configuration, the first portion (25221) communicating with the second portion (25222), the first portion (25221) being located radially inward of the second portion (25222), the second portion (25222) communicating the first communicating slot (2521) with the first portion (25221), the first portion (25221) communicating the second portion (25222) with the flash channel (26).

7. The variable capacity compressor of claim 6, wherein:

the first portion (25221) and the second portion (25222) are both grooves extending in the axial direction of the first cylinder (9), and the axial height of the first portion (25221) is smaller than the axial height of the second portion (25222); the first portion (25221) extends axially from the end face of the first cylinder (9) that meets the first bearing (11), and the second portion (25222) also extends axially from the end face of the first cylinder (9) that meets the first bearing (11); the expansion channel (26) is a groove which penetrates from one axial end face of the first bearing (11) to the other axial end face along the axial direction.

8. The variable capacity compressor of claim 4, wherein:

-the area of the first cavity (2522) is S in the cross-section of the first cylinder (9); the cross section of the expansion channel (26) is a circular hole with the diameter of D and satisfies that S/3 is not more than 1/4 pi D ² ≤S。

9. The variable capacity compressor of claim 4, wherein:

the second slide tail cavity (252) further comprises a pressure communication groove (2523), the pressure communication groove (2523) is communicated with the first communication groove (2521), and the pressure communication groove (2523) can introduce gas with pressure to act on the tail part (162) of the first slide (16) through the first communication groove (2521) and the first slide tail cavity (251) so as to control locking or unlocking of the first slide (16) and control unloading or loading of the first roller (10).

10. The variable capacity compressor of claim 9, wherein:

the variable-capacity compressor is characterized by further comprising a pressure switching channel (81), wherein gas with pressure can be led into the pressure switching channel (81) from the outside of the variable-capacity compressor, the pressure communication groove (2523) is a through hole which penetrates from one axial end face of the first cylinder (9) to the other axial end face in the axial direction, a communication hole (92) is further formed in the first cylinder (9), one end of the communication hole (92) is communicated with the pressure switching channel (81), and the other end of the communication hole is communicated with the pressure communication groove (2523).

11. The variable capacity compressor of claim 10, wherein:

the pressure communication groove (2523) has a kidney-shaped hole structure in the cross section of the first cylinder (9).

12. The variable capacity compressor of claim 2, wherein:

the expansion cavity (25 a) is an accommodating cavity arranged inside the first partition plate (12 a), a second communicating groove (25 b) is further formed in the first partition plate (12 a), one end of the second communicating groove (25 b) is communicated with the expansion channel (26) of the first bearing (11), and the other end of the second communicating groove is communicated with the expansion cavity (25 a).

13. The variable capacity compressor of claim 12, wherein:

the sealing structure is characterized by further comprising a first cover plate (12), the first cover plate (12) is arranged on the axial end face, away from the first bearing (11), of the first partition plate (12 a) in a covering mode, the first partition plate (12 a) is clamped between the first bearing (11) and the first cover plate (12), the expansion cavity (25 a) is formed by extending from the axial end face, connected with the first cover plate (12), of the first partition plate (12 a) to the direction of the other axial end face, and the first cover plate (12) forms sealing for the expansion cavity (25 a).

14. An air conditioning system characterized by: comprising the variable capacity compressor of any one of claims 1-13.