CN110821833A - Compressor and refrigeration equipment - Google Patents

Abstract

The invention provides a compressor and refrigeration equipment. The compressor includes: a casing, the casing is provided with a first air outlet port and a second air outlet port; a first cylinder and a first sliding vane assembly, the first cylinder is provided with a first working chamber and a first sliding vane groove, the A sliding vane assembly is arranged in the first sliding vane groove; the second cylinder and the second sliding vane assembly are provided with a second working chamber and a second sliding vane groove on the second cylinder, and the second sliding vane assembly is arranged in the second sliding vane assembly. The first exhaust port communicates with the first working chamber, and the first exhaust port communicates with the first outlet port through the inner cavity of the casing; the second exhaust port communicates with the second working chamber, and the second exhaust port communicates with the second working chamber. The air port is communicated with the second air outlet port through the exhaust passage; the exhaust passage is located in the casing and is not communicated with the inner cavity of the casing, and the exhaust passage communicates with the first sliding vane groove or the second sliding vane groove. By using the sliding vane groove for exhaust, the originally required length of the exhaust passage is shortened, and the processing of the cylinder is reduced, thereby effectively ensuring the rigidity of the cylinder.

Description

Compressors and refrigeration equipment

technical field

The invention belongs to the technical field of refrigeration equipment, and specifically relates to a compressor and a refrigeration equipment.

Background technique

In the related art, in order to realize dual-pressure exhaust, the compressor will use two cylinders for exhaust, and use two independent exhaust channels to discharge the shell of the compressor, but this needs to be set on the compression assembly of the compressor. The two exhaust passages seriously damage the structure of the original compression assembly, especially in the case of opening an exhaust passage on the cylinder, which affects the rigidity of the cylinder.

SUMMARY OF THE INVENTION

The present invention aims to solve one of the technical problems existing in the prior art or related technologies.

To this end, a first aspect of the present invention proposes a compressor.

A second aspect of the present invention proposes a refrigeration device.

In view of this, according to the first aspect of the present invention, a compressor is proposed, comprising: a casing, on which a first outlet port and a second outlet port are provided; a first cylinder and a first vane assembly, a first The cylinder is provided with a first working chamber and a first sliding vane groove, and the first sliding vane assembly is arranged in the first sliding vane groove; the second cylinder and the second sliding vane assembly are provided with a second working chamber and a second sliding vane assembly on the second cylinder. The second sliding vane slot, the second sliding vane assembly is arranged in the second sliding vane slot; the first exhaust port communicates with the first working chamber, and the first exhaust port communicates with the first outlet port through the inner cavity of the housing; The second exhaust port is communicated with the second working chamber, and the second exhaust port is communicated with the second exhaust port through the exhaust channel; the exhaust channel is located in the casing and is not connected with the inner cavity of the casing, and the exhaust channel is connected to The first sliding vane groove or the second sliding vane groove communicates.

The compressor proposed by the present invention has a first cylinder and a second cylinder, and the two cylinders independently compress gas, which is beneficial to realize the dual-pressure exhaust of the compressor. Specifically, by arranging the first sliding vane groove on the first cylinder, and arranging the first sliding vane assembly in the first sliding vane groove, the existence of the first sliding vane assembly is beneficial to cooperate with the first cylinder and the like to enclose the first sliding vane assembly. the first working chamber, and the gas compression is realized by the volume change of the first working chamber; similarly, a second sliding vane groove is arranged on the second cylinder, and the second sliding vane assembly is arranged in the second sliding vane groove, The existence of the second vane assembly is beneficial to cooperate with the second cylinder and the like to enclose the second working chamber, and realize the gas compression through the volume change of the second working chamber, so that the compressor discharges gases of different pressures. Wherein, by arranging an exhaust passage on the second cylinder, the exhaust passage is communicated with the first sliding vane groove or the second sliding vane groove, and the exhaust passage is also communicated with the second exhaust port. It is not necessary to set up an additional exhaust channel on the first cylinder or the second cylinder far from the sliding vane groove, thus effectively reducing the impact on the exhaust gas. The destruction of the cylinder ensures the rigidity of the cylinder, thereby improving the reliability of the compressor.

It should be noted that, in this application, the inner cavity of the casing is assumed to be the empty space in the casing. Although the exhaust passage is located in the casing, since it is arranged on the second cylinder and is constructed from the second cylinder, therefore It does not communicate with the empty space of the casing.

In addition, the compressor in the above-mentioned technical solution provided by the present invention may also have the following additional technical features:

In a possible design, both the first sliding vane assembly and the second sliding vane assembly include a sliding vane and an elastic piece; both the first sliding vane slot and the second sliding vane slot include an elastic piece accommodating portion for accommodating the elastic piece , the exhaust passage is communicated with the elastic element accommodating part.

In this design, each sliding vane assembly includes a sliding vane and an elastic piece. The sliding piece presses the outer peripheral surface of the piston in the same cylinder. The sliding piece can move with the movement of the piston, and the elastic piece and the sliding piece are far away from the piston. The elastic piece can push the sliding piece so that during the movement of the piston, the sliding piece always keeps pressing the outer peripheral surface of the piston. By setting the part of the first sliding piece groove and the second sliding piece groove for accommodating the elastic piece as the elastic piece accommodating part, the exhaust passage is communicated with the elastic piece accommodating part, so that the gas in the exhaust passage can pass over the elastic piece The elastic member in the accommodating part is used for exhausting.

Wherein, when the gas pressure in the exhaust passage is greater than the gas pressure in the inner cavity of the casing, that is, when the exhaust pressure of the first cylinder is lower than the exhaust pressure of the second cylinder, the relative pressure in the exhaust passage is relatively high. The high-pressure gas can act on the sliding vane assembly across the elastic piece in the elastic piece accommodating part, making the sliding vane abut on the piston more stably, thereby improving the installation firmness of the sliding vane and preventing the sliding vane from having double discharge pressure due to the compressor. the pressure difference and fall from the slide groove.

Specifically, when the exhaust passage communicates with the first sliding vane groove, the exhaust passage communicates with the elastic member accommodating portion of the first sliding vane groove; and when the exhaust passage communicates with the second sliding vane groove, The exhaust passage communicates with the elastic member accommodating portion of the second sliding vane groove.

In a possible design, the exhaust passage communicates with the elastic member accommodating part and the second air outlet port.

In this design, by making the exhaust passage communicate with the elastic member accommodating part and the second gas outlet port, the gas can be prevented from leaking out of the gap between the cylinder and the casing and mixing with the relatively low-pressure gas in the casing.

Further, the exhaust passage is a pipe, part of which extends out of the second outlet port.

Further, the elastic element accommodating portion extends to the outer peripheral surface of the cylinder where it is located.

In a possible design, both the first sliding vane slot and the second sliding vane slot include a connecting portion and a sliding vane accommodating portion for accommodating the sliding vane, and the connecting portion communicates with the sliding vane accommodating portion and the elastic member accommodating portion; the connecting portion It is constructed as a through hole structure and penetrates through the cylinder where the adjacent sliding vane accommodating parts are located, and the second exhaust port communicates with the exhaust passage through the connecting part.

In this design, each sliding vane slot further includes a connecting portion that can penetrate through the cylinder, the connecting portion is a machining hole, and is connected to the sliding vane accommodating portion for accommodating the sliding vane and the elastic piece accommodating portion. Since the connecting portion penetrates through the cylinder, and the connecting portion is used to communicate with the exhaust passage, the structure of the cylinder is simplified.

Specifically, the first bearing or the second bearing can block the opening formed on one end face of the connecting part of the cylinder, so that the second exhaust port can communicate with the elastic member accommodating part through the opening formed on the other end face of the connecting part of the cylinder , to prevent the exhaust passage from communicating with the inner cavity of the housing.

In a possible design, the compressor further includes: a first bearing and a second bearing, the first bearing and the second bearing are spaced apart, and the first cylinder and the second cylinder are located between the first bearing and the second bearing; The plate assembly is located between the first cylinder and the second cylinder; the first bearing and the baffle assembly abuts against the first cylinder, and the second bearing and baffle assembly abuts against the second cylinder.

In this design, the first bearing can provide support for the first cylinder, and the second bearing can provide support for the second cylinder, thereby improving the installation stability of the first cylinder and the second cylinder. The baffle plate assembly is arranged between the first cylinder and the second cylinder, the first cylinder and the second cylinder are also arranged between the first bearing and the second bearing, and the first bearing and baffle plate assembly are in contact with the first cylinder, The second bearing and the diaphragm assembly are in contact with the second cylinder, so that the first bearing and the diaphragm assembly block the first working chamber of the first cylinder located therebetween, and the second bearing and the diaphragm assembly block the first working chamber of the first cylinder located therebetween. The second working chamber of the second cylinder between the two ensures that the first working chamber and the second working chamber will not be deflated at positions other than the first exhaust port and the second exhaust port.

In a possible design, the first exhaust port is provided on the first cylinder or the first bearing or diaphragm assembly; the second exhaust port is provided on the second cylinder or the second bearing or diaphragm assembly.

In a possible design, the compressor further includes: a first air outlet through which the first air outlet communicates with the inner cavity of the casing; a second air outlet through which the second air outlet passes through the second air outlet The exhaust channel is communicated; the first air outlet channel and the second air outlet channel are not communicated with each other. Ensure that the compressor achieves the function of dual-pressure exhaust.

In a possible design, the compressor further includes: a seal, which is enclosed with the second bearing to form an exhaust cavity, the second working cavity communicates with the exhaust cavity, and the second air outlet passage penetrates the second bearing and communicates with the exhaust cavity , the second slide groove and the exhaust channel.

In this design, the second outlet channel is arranged on the second bearing, the second exhaust port is arranged on the second bearing, the second working chamber communicates with the exhaust chamber through the second exhaust port, and the exhaust chamber passes through the second exhaust port. The second air outlet channel is communicated with the second sliding vane groove and the air outlet channel.

In another possible design, the compressor further includes: a seal, which is enclosed with the second bearing to form an exhaust cavity, the second working cavity is communicated with the exhaust cavity; the second air outlet passes through the second bearing, the second cylinder and the The partition plate assembly is communicated with the first sliding vane groove and the exhaust channel.

In this design, the second air outlet can pass through the second bearing, the second cylinder and the baffle plate assembly, and the second exhaust port is arranged on the second bearing, so that the second working chamber passes through the second exhaust port and the exhaust chamber. The exhaust chamber can communicate with the first sliding vane groove on the first cylinder through the second air outlet channel, and then communicate with the second air outlet port.

Further, the seal is a cover plate or a muffler.

In a possible design, the compressor further includes: a first exhaust valve, disposed on the first air outlet channel; and a second exhaust valve, disposed on the second air outlet channel. Wherein, the first exhaust valve can conduct and block the first air outlet channel, and the second exhaust valve can conduct and block the second air outlet channel.

In a possible design, the casing is provided with a suction port, the compressor further includes a first suction passage and a second suction passage, the first working chamber is communicated with the suction port through the first suction passage, and the second The working chamber communicates with the suction port through the second suction passage. Further, the first suction passage and the second suction passage communicate with each other.

In this design, a suction port can be provided on the housing, so that both the first working chamber and the second working chamber communicate with one suction port. Specifically, the first working chamber is connected to the suction port through the first suction passage, and the second working chamber is connected to the suction port through the second suction passage. The first suction passage and the second suction passage are preferably communicated with each other, reducing the The total length of the suction channel avoids excessive processing of cylinders, bearings and other components that will affect the rigidity and reduce production costs.

In another possible design, the casing is provided with two suction ports, the compressor further includes a first suction passage and a second suction passage, and the first working chamber communicates with a suction passage through the first suction passage The second working chamber communicates with another suction port through the second suction channel. Further, the first suction passage and the second suction passage are not communicated with each other.

In this design, by arranging two suction ports on the casing, and making one working chamber communicate with one suction port, the gases in the two suction passages will not be mixed with each other, which is beneficial to ensure that each cylinder is of inhalation.

In a possible design, the first suction passage is arranged on the first cylinder or the first bearing or the diaphragm assembly; the second suction passage is arranged on the second cylinder or the second bearing or the diaphragm assembly.

Further, the first suction passage is arranged on the first cylinder, and the gas enters the first working chamber through the first suction passage, and is compressed in the first working chamber. Similarly, the first suction passage can also be set On the first bearing, the gas enters the first working chamber through the first suction channel on the first bearing, so as to realize the process of sucking the gas into the first working chamber. The second suction passage is arranged on the second cylinder, and the gas enters the second working chamber through the second suction passage, and is compressed in the second working chamber. Similarly, the second suction passage can also be arranged in the second working chamber. On the bearing, the gas enters the second working chamber through the second suction passage on the second bearing, so as to realize the process of sucking the gas into the second working chamber.

In a possible design, the compressor further includes: a first piston, which is eccentrically arranged in the cavity of the first cylinder, the outer peripheral surface of the first piston, the inner surface of the first cylinder and the first sliding vane assembly enclose a first piston The working chamber; the second piston is eccentrically arranged in the cavity of the second cylinder, and the outer peripheral surface of the second piston, the inner surface of the second cylinder and the second sliding vane assembly form a second working chamber.

In this design, the first cylinder is machined to have a cavity, the first piston is eccentrically arranged in the cavity of the first cylinder, the second cylinder is also machined to have a cavity, and the second piston is eccentrically arranged in the cavity of the second cylinder in vivo. The outer peripheral surface of the first piston, the inner surface of the first cylinder and the first sliding vane assembly enclose a first working chamber, so that the first piston can move in the first cylinder, thereby changing the volume of the first working chamber to achieve suction , compressed air and exhaust processes. The outer peripheral surface of the second piston, the inner surface of the second cylinder and the second vane assembly form a second working chamber, so that the second piston can move in the second cylinder, thereby changing the volume of the second working chamber to achieve suction , compressed air and exhaust processes.

In a possible design, the inner diameter of the first cylinder is D1, the eccentricity of the first piston relative to the cavity of the first cylinder is e1, the height of the first cylinder is H1, and the exhaust pressure of the first cylinder is P1 ; The inner diameter of the second cylinder is D2, the eccentricity of the second piston relative to the cavity of the second cylinder is e2, the height of the second cylinder is H2, and the exhaust pressure of the second cylinder is P2; among them, P1<P2, 0.6≤(e1×(D1-e1)×H1)÷(e2×(D2-e2)×H2)≤1.9.

In this design, the application defines P1<P2 to achieve the purpose of different discharge pressures between the first cylinder and the second cylinder. The eccentricity of the inner cavity is different from the eccentricity of the second piston relative to the inner cavity of the second cylinder, the height of the first cylinder is different from the height of the second cylinder, and the specific range is 0.6≤(e1×(D1-e1)× H1)÷(e2×(D2-e2)×H2)≤1.9, while the exhaust pressure of the first cylinder is different from the exhaust pressure of the second cylinder, the displacement of the first cylinder is different from that of the second cylinder. The displacement of the cylinders, so that the condensers corresponding to the first cylinder and the second cylinder can efficiently realize the condensing function, avoid wasting energy, make full use of the double exhaust advantage of the double-cylinder compressor, and significantly improve the compressor and The energy efficiency of the compressor's refrigeration equipment.

It should be noted that the eccentric distance of the first piston relative to the inner cavity of the first cylinder in the present application is the eccentric distance of the first piston relative to the center line of the inner cavity of the first cylinder by default, and the extension direction of the center line is the same as The axial direction of the crankshaft is the same. The eccentric distance of the second piston relative to the inner cavity of the second cylinder is, by default, the eccentric distance of the second piston relative to the center line of the inner cavity of the second cylinder, and the extension direction of the center line is the same as the axial direction of the crankshaft. The inner chambers of both cylinders are cylindrical or approximately cylindrical.

In a possible design, the compressor further includes: a crankshaft having a first eccentric part and a second eccentric part, the first piston is connected to the first eccentric part, and the second piston is connected to the second eccentric part.

In this design, the compressor also includes a crankshaft and a motor assembly, the motor assembly can drive the crankshaft to rotate, and the first eccentric part on the crankshaft is connected to the first piston, so that when the crankshaft rotates, the first eccentric part on the crankshaft drives the first eccentric part on the crankshaft. The piston rotates, thereby realizing the functions of inhaling, compressing and expelling gas in the first working chamber. Similarly, the second eccentric part on the crankshaft is connected with the second piston, so that when the crankshaft rotates, the second eccentric part on the crankshaft drives the second piston to rotate, so as to realize the functions of inhaling, compressing and discharging gas in the second working chamber .

A second aspect of the present invention provides a refrigeration device, comprising: the compressor according to any one of the above technical solutions. Since the refrigeration equipment provided by the present invention has the compressor of any one of the above technical solutions, it further has the beneficial effects of any one of the above technical solutions, which will not be repeated here.

In a possible design, the refrigeration equipment further includes: a first condenser communicated with the first outlet port of the compressor; a first throttle element communicated with the first condenser; a first evaporator communicated with the first section The flow element is communicated; the first accumulator is communicated with the first suction passage of the first evaporator and the compressor; the second condenser is communicated with the second outlet port of the compressor; the second throttling element is communicated with the second condenser The second evaporator is in communication with the second throttle element; the second accumulator is in communication with the second evaporator and the second suction passage of the compressor.

In this design, the compressor and the first condenser, the first throttling element, the first evaporator and the first accumulator form a first set of refrigeration systems, and the compressor and the second condenser, the second throttling element, The second evaporator and the second liquid accumulator form a second group of refrigeration systems, and the two groups of refrigeration systems are independent of each other, that is, the refrigeration equipment realizes the multi-exhaust function realized by multiple compressors in the related art through one compressor. The processing cost of the refrigeration equipment is reduced, the space occupied by the refrigeration equipment is also reduced, and the convenience of installing the internal components of the refrigeration equipment is improved. Because the exhaust pressures of the first cylinder and the second cylinder are different, the first condenser is reached. Different from the exhaust pressure of the second condenser, the refrigeration equipment can have double condensation temperature and double evaporation temperature, which is beneficial to realize the cascade utilization of energy and improve the energy efficiency of the refrigeration equipment. Especially when the displacements of the first cylinder and the second cylinder are different, the amount of refrigerant condensed by the first condenser and the second condenser is also different, which further improves the energy efficiency of the refrigeration equipment.

In a possible design, the refrigeration equipment further includes: a third condenser, communicated with the first outlet port of the compressor; a third throttle element, communicated with the third condenser; and a third evaporator, communicated with the third section The flow element is communicated; the third accumulator is communicated with the first suction passage and the second suction passage of the third evaporator and the compressor; the fourth condenser is communicated with the second outlet port of the compressor; the fourth throttle The fourth condenser communicates with the fourth condenser; the fourth evaporator communicates with the fourth throttling element; the third accumulator also communicates with the fourth evaporator and the first suction passage and the second suction passage of the compressor.

In this design, the compressor and the third condenser, the third throttling element, the third evaporator, and the third accumulator form a third group of refrigeration systems, and the compressor and the fourth condenser, the fourth throttling element, The fourth evaporator and the third liquid accumulator form the fourth group of refrigeration systems, and the two groups of refrigeration systems are independent of each other, that is, the refrigeration equipment realizes the multi-exhaust function realized by multiple compressors in the related art through one compressor. The processing cost of the refrigeration equipment is reduced, the occupied space of the refrigeration equipment is also reduced, and the convenience of installing the internal components of the refrigeration equipment is improved. The first suction passage and the second suction passage are communicated with the third liquid accumulator, thereby Setting a liquid accumulator can satisfy the suction function of the first cylinder and the second cylinder, reduce the number of components in the refrigeration equipment, further reduce the processing cost of the refrigeration equipment, effectively reduce the volume of the refrigeration equipment, and improve the installation time of the refrigeration equipment. convenience. Moreover, because the exhaust pressures of the first cylinder and the second cylinder are different, the exhaust pressures reaching the third condenser and the fourth condenser are different, so that the refrigeration equipment can have double condensation temperatures and double evaporation temperatures, which is beneficial to the realization of energy cascade utilization, improve the energy efficiency of refrigeration equipment. Especially when the displacements of the first cylinder and the second cylinder are different, the amount of refrigerant condensed by the third condenser and the fourth condenser is also different, which further improves the energy efficiency of the refrigeration equipment.

Additional aspects and advantages of the present invention will become apparent in the description section that follows, or will be learned by practice of the present invention.

Description of drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of embodiments taken in conjunction with the accompanying drawings, wherein:

FIG. 1 shows a schematic structural diagram of a compressor according to an embodiment of the present invention;

FIG. 2 shows a schematic structural diagram of a compressor according to another embodiment of the present invention;

FIG. 3 shows a schematic structural diagram of a compressor according to another embodiment of the present invention;

FIG. 4 shows a schematic structural diagram of a compressor according to an embodiment of the present invention;

FIG. 5 shows a schematic structural diagram of a refrigeration device according to an embodiment of the present invention;

FIG. 6 shows a schematic structural diagram of a refrigeration device according to another embodiment of the present invention;

FIG. 7 is a schematic diagram showing the variation curve of the energy efficiency of the refrigeration equipment under the displacement ratio of two cylinders according to an embodiment of the present invention.

Among them, the corresponding relationship between the reference numerals and the component names in Fig. 1 to Fig. 6 is:

100 first cylinder, 110 first piston, 120 second cylinder, 122 exhaust passage, 130 second piston, 140 housing, 142 first outlet port, 144 second outlet port, 150 first bearing, 160 second bearing , 170 baffle assembly, 172 first baffle, 174 second baffle, 180 first slider assembly, 190 second slider assembly, 192 slider, 194 elastic member, 200 second slider slot, 202 elastic member accommodating part, 210 first air outlet, 212 first air outlet, 220 second air outlet, 222 second air outlet, 240 seal, 242 air outlet, 260 first air inlet, 270 second air inlet Channel, 300 crankshaft, 310 motor assembly, 350 first condenser, 360 first evaporator, 370 first accumulator, 380 second condenser, 390 second evaporator, 400 second accumulator, 410 first Throttle element, 420 second throttle element; 430 third condenser, 440 third evaporator, 450 third accumulator, 460 fourth condenser, 470 fourth evaporator.

Detailed ways

In order to understand the above objects, features and advantages of the present invention more clearly, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments may be combined with each other in the case of no conflict.

Many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited by the specific details disclosed below. Example limitations.

Compressors, compressors, and refrigeration apparatuses according to some embodiments of the present invention are described below with reference to FIGS. 1 to 7 .

Example 1:

As shown in FIG. 1 to FIG. 4 , a compressor includes: a casing 140 provided with a first air outlet port 142 and a second air outlet port 144 ; a first cylinder 100 and a first sliding vane assembly 180 , The first cylinder 100 is provided with a first working chamber and a first sliding vane groove, and the first sliding vane assembly 180 is arranged in the first sliding vane groove; the second cylinder 120 and the second sliding vane assembly 190 are on the second cylinder 120 A second working chamber and a second sliding vane groove 200 are provided, and the second sliding vane assembly 190 is arranged in the second sliding vane groove 200; the first exhaust port and the second exhaust port, the first exhaust port and the first The working chamber is communicated, and the first exhaust port is communicated with the first outlet port 142 through the inner cavity of the housing 140; the second exhaust port is communicated with the second working chamber, and the second exhaust port is communicated with the second outlet port through the exhaust passage 122. 144 ; the exhaust passage 122 is located in the housing 140 and is not communicated with the inner cavity of the housing 140 , and the exhaust passage 122 communicates with the second sliding vane slot 200 .

The compressor proposed by the present invention has a first cylinder 100 and a second cylinder 120, and the two cylinders independently compress gas. The gas enters the first working chamber through the first suction passage 260, is compressed in the first working chamber and then is discharged through the first exhaust port; the gas enters the second working chamber through the second suction passage 270, and is Compression is performed in the second working chamber and then discharged through the second exhaust port, which is beneficial to realize dual-pressure exhaust of the compressor. Specifically, by arranging the first sliding vane groove on the first cylinder 100, and arranging the first sliding vane assembly 180 in the first sliding vane groove, the existence of the first sliding vane assembly 180 is beneficial to be in phase with the first cylinder 100 and the like. The first working chamber is matched to form a first working chamber, and the gas is compressed by changing the volume of the first working chamber; similarly, the second sliding vane groove 200 is arranged on the second cylinder 120, and the second sliding vane assembly 190 is arranged on the In the second sliding vane groove 200, the existence of the second sliding vane assembly 190 is beneficial to cooperate with the second cylinder 120 to enclose a second working chamber, and to achieve gas compression through the volume change of the second working chamber, thereby The compressor discharges gases of different pressures. Wherein, by connecting the exhaust passage 122 with the second sliding vane groove 200 and connecting the exhaust passage 122 with the second exhaust port, the second sliding vane groove 200 is used for exhausting, and the exhaust passage is shortened The originally required length of 122 does not require an additional exhaust passage 122 on the second cylinder 120 away from the second sliding vane groove 200, thereby effectively reducing the damage to the second cylinder 120 and ensuring the rigidity of the second cylinder 120. This further improves the reliability of the compressor.

Further, as shown in FIG. 4 , the second sliding vane assembly 190 includes a sliding vane 192 and an elastic piece 194 , and the elastic piece 194 is used to push the sliding piece 192 to abut against the second piston 130 in the second cylinder 120 . The part of the second slide slot 200 for accommodating the elastic member 194 is the elastic member accommodating portion 202 . The exhaust passage 122 may be communicated with the elastic member accommodating portion 202, so that the gas passes over the elastic member 194 and enters the exhaust passage 122 to facilitate exhausting.

Further, the exhaust passage 122 communicates with the elastic member accommodating portion 194 and the second outlet port 144 .

Further, when the gas pressure in the exhaust passage 122 is greater than the gas pressure in the inner cavity of the housing 140 , that is, when the exhaust pressure of the first cylinder 100 is lower than the exhaust pressure of the second cylinder 120 , The relatively high-pressure gas in the exhaust passage 122 can act on the sliding piece 192 across the elastic piece 194 in the elastic piece accommodating portion 202 , so that the sliding piece 192 can abut on the second piston 130 more stably, thereby improving the installation of the sliding piece 192 The firmness prevents the sliding vane 192 from falling out of the second sliding vane groove 200 due to the pressure difference of the double discharge pressure of the compressor.

At this time, the first sliding vane assembly 180 may also include a sliding vane and an elastic member 194 , and the elastic member 194 is used to push the sliding vane to abut against the first piston 110 in the first cylinder 100 . Or the first sliding vane assembly 180 includes a sliding vane, and the sliding vane is integrally formed or hingedly connected with the first piston 110 in the first cylinder 100 .

Embodiment 2:

The difference from the first embodiment is that the exhaust passage 122 communicates with the first sliding vane groove. Therefore, the damage to the first cylinder 100 can be reduced, the rigidity of the first cylinder 100 can be ensured, and the operation reliability of the compressor can be improved.

Further, the exhaust passage 122 communicates with the elastic member accommodating portion 202 of the first sliding vane groove.

Embodiment three:

On the basis of the above-mentioned first or second embodiment, as shown in FIG. 1 to FIG. 4 , it is further defined that the compressor further includes: a first bearing 150 , a second bearing 160 and a diaphragm assembly 170 , the first bearing 150 and the first bearing 150 and the second bearing The two bearings 160 are spaced apart, and the first cylinder 100 and the second cylinder 120 are located between the first bearing 150 and the second bearing 160; the diaphragm assembly 170 is located between the first cylinder 100 and the second cylinder 120; the first bearing 150 And the diaphragm assembly 170 is in contact with the first cylinder 100 .

In this embodiment, the first bearing 150 can provide support for the first cylinder 100 , and the second bearing 160 can provide support for the second cylinder 120 to improve the installation stability of the first cylinder 100 and the second cylinder 120 . The baffle plate assembly 170 is disposed between the first cylinder 100 and the second cylinder 120, the first cylinder 100 and the second cylinder 120 are also disposed between the first bearing 150 and the second bearing 160, and the first bearing 150 and the baffle plate The assembly 170 is in contact with the first cylinder 100, and the second bearing 160 and the diaphragm assembly 170 are in contact with the second cylinder 120, so that the first bearing 150 and the diaphragm assembly 170 block the first cylinder 100 between them. The first working chamber, the second bearing 160 and the baffle plate assembly 170 block the second working chamber of the second cylinder 120 located between them, ensuring that the first working chamber and the second working chamber will not be in the first row except the first working chamber. Deflation at locations other than the air port and the second exhaust port.

Further, the first exhaust port 210 is provided on the first cylinder 100 or the first bearing 150 or the diaphragm assembly 170 ; the second exhaust port 220 is provided on the second cylinder 120 or the second bearing 160 or the diaphragm assembly 170 .

Further, the compressor further includes: a first air outlet channel 212, through which the first air outlet 210 communicates with the inner cavity of the housing 140; a second air outlet channel 222, through which the second air outlet 220 passes through the second air outlet The passage 222 communicates with the exhaust passage 122; the first air outlet passage 212 and the second air outlet passage 222 are not communicated with each other. Ensure that the compressor achieves the function of dual-pressure exhaust.

Further, as shown in FIG. 4 , the compressor further includes: a sealing member 240 , which forms an exhaust cavity 242 with the second bearing 160 , and the second exhaust port communicates with the exhaust passage 122 through the exhaust cavity 242 . The existence of the exhaust cavity 242 facilitates the communication between the second exhaust port and the exhaust passage 122, and the exhaust cavity 242 is independent of other spaces inside the housing 140 and will not affect the exhaust process of the first cylinder 100, ensuring that The compressor realizes dual pressure discharge.

Specifically, the seal 240 is a cover plate or a muffler. It can be fastened on the second bearing 160 with screws, or welded on the second bearing 160 .

In a specific embodiment, as shown in FIG. 1 , the first bearing 150 is provided with a first exhaust port 210 ; the second bearing 160 is provided with a second exhaust port 220 . After the compressed air in the first working chamber passes through the first exhaust port 210 , it is discharged through the exhaust chamber 242 enclosed by the seal 240 and the first bearing 150 ; the compressed air in the second working chamber passes through the second bearing 160 . The second exhaust port 220 is discharged into the exhaust passage 122 and then discharged. Since the first bearing 150 and the second bearing 160 are located on two sides of the two cylinders and are far away from each other, the mutual influence of the exhaust processes of the first cylinder 100 and the second cylinder 120 is effectively avoided, and the dual-pressure exhaust function of the compressor is realized.

In another specific embodiment, as shown in FIG. 2, the baffle plate assembly 170 includes a first baffle plate 172 and a second baffle plate 174, and the first baffle plate 172 and the second baffle plate 174 enclose a cavity; The bearing 150 is provided with a first exhaust port 210 ; the second partition plate 174 is provided with a second exhaust port 220 , and the second exhaust port 220 communicates with the exhaust channel 122 through the second air outlet channel 222 . The compressed air in the second working chamber can be discharged to the second air outlet port 144 through the second air outlet 220 and the second air outlet channel 222 . At this time, the compressed air in the first working chamber can be discharged to the first air outlet port 142 through the first air outlet 210 and the first air outlet channel 212 on the first bearing 150 . It is ensured that the exhaust processes of the first cylinder 100 and the second cylinder 120 do not affect each other, and the dual-pressure exhaust function of the compressor is realized.

In another specific embodiment, as shown in FIG. 3 , the baffle plate assembly 170 includes a first baffle plate 172 and a second baffle plate 174, and the first baffle plate 172 and the second baffle plate 174 enclose a cavity; The partition plate 172 is provided with a first exhaust port 210 that communicates with the first air outlet channel 212 ; the second bearing 160 is provided with a second exhaust port 220 . The compressed air in the first working cavity can be discharged to the inner cavity of the housing 140 through the first exhaust port 210 , the cavity of the baffle assembly 170 , and the first air outlet channel 212 . At this time, the compressed air in the second working chamber is exhausted to the second outlet port 144 through the second exhaust port 220 and the exhaust passage 122 . It is ensured that the exhaust processes of the first cylinder 100 and the second cylinder 120 do not affect each other, and the dual-pressure exhaust function of the compressor is realized.

In another specific embodiment, the baffle plate assembly 170 includes a first baffle plate 172, a second baffle plate 174 and a baffle plate (not shown in the figure), and the first baffle plate 172 and the second baffle plate 174 enclose The cavity is divided into two independent cavities by the partition plate; the first partition plate 172 is provided with a first exhaust port 210, and the gas in the first cylinder 100 passes through the first exhaust port 210, the two One of the mutually independent cavities enters the first air outlet channel 212; the second partition plate 174 is provided with a second exhaust port 220, and the gas in the second cylinder 120 passes through the second exhaust port 220, two mutually independent exhaust ports 220. The other one of the cavities enters the second air outlet channel 222 . It is ensured that the exhaust processes of the first cylinder 100 and the second cylinder 120 do not affect each other, and the dual-pressure exhaust function of the compressor is realized.

In another specific embodiment, the compressor further includes: a sealing member 240 enclosed with the second bearing 160 to form an exhaust cavity 242 , the second working cavity communicates with the exhaust cavity 242 , and the second exhaust passage 222 penetrates through the second bearing 160 , and communicates with the exhaust cavity 242 , the second sliding vane groove 200 and the exhaust channel 122 . The second outlet channel 222 is provided on the second bearing 160 , the second exhaust port 220 is provided on the second bearing 160 , the second working chamber communicates with the exhaust chamber 242 through the second exhaust port 220 , and the exhaust chamber 242 It communicates with the second sliding vane groove 200 and the exhaust channel 122 through the second air outlet channel 222 .

In another specific embodiment, the compressor further includes: a sealing member 240 enclosed with the second bearing 160 to form an exhaust cavity 242, the second working cavity is communicated with the exhaust cavity 242; the second exhaust passage 222 penetrates through the second bearing 160 , the second cylinder 120 and the baffle plate assembly 170 , and communicate with the first sliding vane groove and the exhaust passage 122 . The second outlet passage 222 can penetrate through the second bearing 160 , the second cylinder 120 and the baffle assembly 170 , and the second exhaust port 220 is disposed on the second bearing 160 , so that the second working chamber passes through the second exhaust port 220 and the exhaust port 220 . The air cavity 242 communicates with each other, and the exhaust cavity 242 can communicate with the first sliding vane groove on the first cylinder 100 through the second air outlet passage 222 , and then communicate with the second air outlet port 144 .

Further, the compressor further includes lift limiters disposed on the first bearing 150 and the second bearing 160, the first exhaust port 210 is disposed on the first bearing 150, and the second exhaust port 220 is disposed on the first bearing 150. In the case of the two bearings 160 , the lift limiter can limit the exhaust speed of the first exhaust port 210 and the second exhaust port 220 .

Further, the compressor further includes: a first exhaust valve disposed on the first air outlet channel 212 ; and a second exhaust valve disposed on the second air outlet channel 222 . The first exhaust valve can conduct and block the first air outlet channel 212 , and the second exhaust valve can conduct and block the second exhaust channel 222 .

Embodiment 4:

On the basis of any of the above embodiments, it is further defined that the casing 140 is provided with a suction port 146, the compressor further includes a first suction passage 260 and a second suction passage 270, and the first working chamber passes through the first suction The passage 260 communicates with the suction port 146 , and the second working chamber communicates with the suction port 146 through the second suction passage 270 . Further, the first suction passage 260 and the second suction passage 270 communicate with each other.

In this embodiment, a suction port 146 may be provided on the housing 140 , so that both the first working chamber and the second working chamber communicate with one suction port 146 . The first suction passage 260 and the second suction passage 270 are communicated with each other to reduce the total length of the suction passage, avoid excessive processing of components such as cylinders and bearings to affect rigidity, and reduce production costs.

Or on the basis of any of the above embodiments, it is further defined that the casing 140 is provided with two suction ports 146, and the compressor further includes a first suction passage 260 and a second suction passage 270, and the first working chamber passes through the second suction passage 270. A suction passage 260 communicates with one suction port 146 , and the second working chamber communicates with the other suction port 146 through the second suction passage 270 . Further, the first suction passage 260 and the second suction passage 270 are not communicated with each other. The gas in the two suction passages is prevented from being mixed with each other, thereby helping to ensure the suction volume of each cylinder.

Further, the first intake passage 260 is provided on the first cylinder 100 or the first bearing 150 or the diaphragm assembly 170 ; the second intake passage 270 is provided on the second cylinder 120 or the second bearing 160 or the diaphragm assembly 170 .

Further, the first suction passage 260 is provided on the first cylinder 100, and the gas enters the first working chamber through the first suction passage 260 and is compressed in the first working chamber. The gas channel 260 is provided on the first bearing 150 , and the gas enters the first working chamber through the first suction channel 260 on the first bearing 150 , so as to realize the process of sucking the gas into the first working chamber. The second suction passage 270 is provided on the second cylinder 120, and the gas enters the second working chamber through the second suction passage 270, and is compressed in the second working chamber. Similarly, the second suction passage 270 can also be Provided on the second bearing 160, the gas enters the second working chamber through the second suction channel 270 on the second bearing 160, so as to realize the process of sucking the gas into the second working chamber.

Embodiment 5:

On the basis of any of the above embodiments, as shown in FIGS. 1 to 4 , the compressor is further defined to further include: a crankshaft 300 , a first piston 110 and a second piston 130 , and a motor assembly 310 , and the motor assembly 310 includes a stator and a rotor , the crankshaft 300 has a first eccentric part and a second eccentric part, the first piston 110 is connected with the first eccentric part, and the second piston 130 is connected with the second eccentric part. The first piston 110 is eccentrically arranged in the cavity of the first cylinder 100, the outer peripheral surface of the first piston 110, the inner surface of the first cylinder 100 and the first sliding vane assembly 180 enclose a first working chamber; the second piston 130 is eccentrically arranged In the cavity of the second cylinder 120 , the outer peripheral surface of the second piston 130 , the inner surface of the second cylinder 120 and the second sliding vane assembly 190 enclose a second working cavity. The inner diameter of the first cylinder 100 is D1, the eccentricity of the first piston 110 relative to the cavity of the first cylinder 100 is e1, the height of the first cylinder 100 is H1, and the exhaust pressure of the first cylinder 100 is P1; The inner diameter of the second cylinder 120 is D2, the eccentricity of the second piston 130 relative to the cavity of the second cylinder 120 is e2, the height of the second cylinder 120 is H2, and the exhaust pressure of the second cylinder 120 is P2; wherein, P1<P2, 0.6≤(e1×(D1-e1)×H1)÷(e2×(D2-e2)×H2)≤1.9.

In this embodiment, the application defines P1<P2 to achieve the purpose of different discharge pressures of the first cylinder 100 and the second cylinder 120. By defining that the inner diameter of the first cylinder 100 is different from that of the second cylinder 120, the first piston 110 The eccentric distance relative to the inner cavity of the first cylinder 100 is different from the eccentric distance of the second piston 130 relative to the inner cavity of the second cylinder 120, the height of the first cylinder 100 is different from the height of the second cylinder 120, and the specific range is 0.6≤(e1×(D1-e1)×H1)÷(e2×(D2-e2)×H2)≤1.9, it can be realized that the exhaust pressure of the first cylinder 100 is different from the exhaust pressure of the second cylinder 120 At the same time, it is realized that the intake volume of the first cylinder 100 is different from the intake volume of the second cylinder 120, and the displacement of the first cylinder 100 is different from the displacement of the second cylinder 120, so that the first cylinder 100 and the second cylinder 100 correspond to the second cylinder 120. The condenser of the cylinder 120 can efficiently realize the condensing function, avoid waste of energy, and make full use of the double-exhaust advantage of the double-cylinder compressor to significantly improve the energy efficiency of the compressor and the refrigeration equipment using the compressor. Specifically, the values of (e1×(D1-e1)×H1)÷(e2×(D2-e2)×H2) may be 0.8, 1.05, and 1.85.

Figure 7 shows the energy efficiency curve that changes with the displacement ratio under different displacement ratios. It can be seen from Figure 7 that as the displacement ratio increases, the energy efficiency first increases and then decreases. It can be seen from this that making full use of the dual-exhaust advantage of the dual-cylinder compressor can significantly improve the energy efficiency of the compressor and the refrigeration equipment using the compressor.

The dual-cylinder compressor in the related art is affected by various factors such as the object of action, the convenience of processing, and the ease of assembly. The exhaust gas of each cylinder of the dual-cylinder compressor is equal. In the present application, due to the first cylinder 100 and the second cylinder. The exhaust pressure of 120 is different, the condenser temperature corresponding to different pressure ratio is different, the enthalpy difference between inlet and outlet is different, and the corresponding flow rate is also different, so that the advantages of dual exhaust can be fully utilized to achieve the best effect.

It should be noted that the eccentric distance of the first piston 110 relative to the inner cavity of the first cylinder 100 in the present application is the eccentric distance of the first piston 110 relative to the center line of the inner cavity of the first cylinder 100 by default. The extension direction of the crankshaft 300 is in the same direction as the axial direction of the crankshaft 300 . The eccentric distance of the second piston 130 relative to the inner cavity of the second cylinder 120 is, by default, the eccentric distance of the second piston 130 relative to the center line of the inner cavity of the second cylinder 120 . The extension direction of the center line is the same as the axis of the crankshaft 300 . in the same direction. The inner chambers of both cylinders are cylindrical or approximately cylindrical.

Embodiment 6:

As shown in FIG. 5 and FIG. 6 , a refrigeration apparatus includes: the compressor according to any one of the above embodiments. Since the refrigeration equipment provided by the present invention has the compressor of any of the above-mentioned embodiments, it further has the beneficial effects of any of the above-mentioned embodiments, which will not be repeated here.

In a specific embodiment, as shown in FIG. 5 , the refrigeration equipment further includes: a first condenser 350 communicated with the first exhaust passage 122 of the compressor; a first throttle element 410 , communicated with the first condenser 350 The first evaporator 360 is in communication with the first throttling element 410; the first accumulator 370 is in communication with the first evaporator 360 and the first suction passage 260 of the compressor; the second condenser 380 is in communication with the compressor The second exhaust passage 122 of the second throttling element 420 is communicated with the second condenser 380; the second evaporator 390 is communicated with the second throttling element 420; the second accumulator 400 is communicated with the second evaporator The compressor 390 and the second suction passage 270 of the compressor.

In this embodiment, the compressor and the first condenser 350, the first throttling element 410, the first evaporator 360, and the first liquid accumulator 370 form a first set of refrigeration systems, and the compressor and the second condenser 380, The second throttling element 420, the second evaporator 390, and the second liquid accumulator 400 form a second group of refrigeration systems. The two groups of refrigeration systems are independent of each other, that is, the refrigeration equipment realizes multiple compressions in the related art through one compressor. The multi-exhaust function realized by the machine reduces the processing cost of the refrigeration equipment, reduces the occupied space of the refrigeration equipment, and improves the convenience of installing the internal components of the refrigeration equipment. The different exhaust pressures make the exhaust pressures reaching the first condenser 350 and the second condenser 380 different, so that the refrigeration equipment can have dual condensation temperatures and dual evaporation temperatures, which is conducive to realizing the cascade utilization of energy and improving the energy efficiency of the refrigeration equipment. . Especially when the displacements of the first cylinder 100 and the second cylinder 120 are different, the amount of refrigerant condensed by the first condenser 350 and the second condenser 380 is also different, which further improves the energy efficiency of the refrigeration equipment.

Wherein, the first throttling element 410 and the second throttling element 420 may be expansion valves or capillary tubes.

The flow of refrigerant is as follows:

The first outlet port 142 of the compressor is connected to the first condenser 350 through components such as pipes, the refrigerant flows into the first evaporator 360 through the first expansion valve, and flows into the first evaporator 360 through the suction channel of the first accumulator 370 The first air intake passage 260 of the first cylinder 100; the first air outlet port 142 is connected to the second condenser 380 through the pipe assembly, the refrigerant flows into the second evaporator 390 through the second expansion valve, and the second evaporator 390 passes through the second evaporator 390. The intake passage of the accumulator 400 flows through the second intake passage 270 of the second cylinder 120 .

In another specific embodiment, as shown in FIG. 6 , the refrigeration equipment further includes: a third condenser 430 communicated with the first exhaust passage 122 of the compressor; a third throttling element, connected with the third condenser 430 The third evaporator 440 is in communication with the third throttling element; the third accumulator 450 is in communication with the third evaporator 440 and the first suction passage 260 and the second suction passage 270 of the compressor; the fourth condensation The fourth throttling element is in communication with the fourth condenser 460; the fourth evaporator 470 is in communication with the fourth throttling element; the third accumulator 450 is also The first suction passage 260 and the second suction passage 270 of the fourth evaporator 470 communicate with the compressor.

In this embodiment, the compressor and the third condenser 430, the third throttling element, the third evaporator 440, and the third liquid accumulator 450 form a third group of refrigeration systems, and the compressor and the fourth condenser 460, the third The four throttling elements, the fourth evaporator 470, and the third liquid accumulator 450 form a fourth group of refrigeration systems, and the two groups of refrigeration systems are independent of each other, that is, the refrigeration equipment realizes the performance of multiple compressors in the related art through one compressor. The realized multi-exhaust function reduces the processing cost of the refrigeration equipment, also reduces the occupied space of the refrigeration equipment, and improves the convenience of installing the internal components of the refrigeration equipment. The first suction channel 260 and the second suction channel 270 It is communicated with the third liquid accumulator 450, so that one liquid accumulator can satisfy the suction function of the first cylinder 100 and the second cylinder 120, reduce the number of components in the refrigeration equipment, further reduce the processing cost of the refrigeration equipment, and effectively Reduce the volume of refrigeration equipment and improve the convenience of installation of refrigeration equipment. Moreover, since the exhaust pressures of the first cylinder 100 and the second cylinder 120 are different, the exhaust pressures reaching the third condenser 430 and the fourth condenser 460 are different, so that the refrigeration equipment can have double condensation temperatures and double evaporation temperatures, It is beneficial to realize the cascade utilization of energy and improve the energy efficiency of refrigeration equipment. Especially when the displacements of the first cylinder 100 and the second cylinder 120 are different, the amount of refrigerant condensed by the third condenser 430 and the fourth condenser 460 is also different, which further improves the energy efficiency of the refrigeration equipment.

The above-mentioned two specific embodiments realize the function of dual exhaust parameters of a single compressor, and use the heat of high and low temperature of the dual exhaust to effectively save energy consumption. At the same time, the range of the ratio of the twin-cylinder parameters is reasonably specified, which can give full play to the advantages of the double-row cycle and improve the energy efficiency.

In the present invention, the term "plurality" refers to two or more, unless otherwise expressly defined. The terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be It is directly connected or indirectly connected through an intermediary. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiment", etc. means that a particular feature, structure, material or characteristic described in connection with the embodiment or example is included in the present invention at least one embodiment or example of . In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or instance. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (15)

1. A compressor, characterized in that, comprising: a casing, the casing is provided with a first air outlet port and a second air outlet port; a first air cylinder and a first sliding vane assembly, the first air cylinder is provided with a first working chamber and a first sliding vane groove, and the first sliding vane assembly is arranged in the first sliding vane groove; a second air cylinder and a second sliding vane assembly, the second air cylinder is provided with a second working chamber and a second sliding vane groove, and the second sliding vane assembly is arranged in the second sliding vane groove; a first exhaust port, communicated with the first working chamber, and the first exhaust port communicates with the first outlet port through the inner cavity of the housing; a second exhaust port, communicated with the second working chamber, and the second exhaust port is communicated with the second outlet port through an exhaust passage; The exhaust passage is located in the casing and is not communicated with the inner cavity of the casing, and the exhaust passage communicates with the first sliding vane groove or the second sliding vane groove. 2. The compressor of claim 1, wherein: The first sliding vane assembly and the second sliding vane assembly both include a sliding vane and an elastic member; Both the first sliding piece slot and the second sliding piece slot include an elastic piece accommodating portion for accommodating the elastic piece, and the exhaust passage communicates with the elastic piece accommodating portion. 3. The compressor of claim 2, wherein: The exhaust passage communicates with the elastic element accommodating portion and the second outlet port. 4. The compressor of claim 2, wherein: Both the first sliding vane slot and the second sliding vane slot include a connecting portion and a sliding vane accommodating portion for accommodating the sliding vane, and the connecting portion communicates with the sliding vane accommodating portion and the elastic member accommodating portion. department; The connecting portion is configured as a through-hole structure and penetrates through the cylinder where the adjacent sliding vane accommodating portion is located, and the second exhaust port communicates with the exhaust passage through the connecting portion. 5. The compressor of any one of claims 1 to 4, wherein the compressor further comprises: a first bearing and a second bearing, the first bearing and the second bearing are spaced apart, and the first cylinder and the second cylinder are located between the first bearing and the second bearing; a diaphragm assembly located between the first cylinder and the second cylinder; The first bearing and the diaphragm assembly are in abutment with the first cylinder, and the second bearing and the diaphragm assembly are in abutment with the second cylinder. 6. The compressor of claim 5, wherein the compressor further comprises: a first air outlet, the first air outlet communicates with the inner cavity of the casing through the first air outlet; a second air outlet, the second air outlet communicates with the air outlet through the second air outlet; The first air outlet channel and the second air outlet channel are not communicated with each other. 7. The compressor of claim 6, wherein the compressor further comprises: a seal, which is enclosed with the second bearing to form an exhaust cavity, and the second working cavity communicates with the exhaust cavity; The second air outlet passes through the second bearing and communicates with the exhaust cavity, the second sliding vane groove and the exhaust channel, or The second air outlet channel penetrates through the second bearing, the second cylinder and the baffle plate assembly, and communicates with the first sliding vane groove and the exhaust channel. 8. The compressor according to claim 6 or 7, wherein the compressor further comprises: a first exhaust valve, arranged on the first air outlet channel; The second exhaust valve is arranged on the second air outlet channel. 9. The compressor of claim 5, wherein: The casing is provided with a suction port, the compressor further includes a first suction passage and a second suction passage, and the first working chamber communicates with the suction port through the first suction passage, The second working chamber communicates with the suction port through the second suction passage, and the first suction passage and the second suction passage communicate with each other; or The casing is provided with two suction ports, the compressor further includes a first suction passage and a second suction passage, and the first working chamber communicates with one of the suction passages through the first suction passage. an air port, the second working chamber communicates with the other suction port through the second suction passage, and the first suction passage and the second suction passage are not communicated with each other. 10. The compressor of claim 9, wherein: the first air intake passage is arranged on the first cylinder or the first bearing or the baffle plate assembly; The second intake passage is provided on the second cylinder or the second bearing or the diaphragm assembly. 11. The compressor of any one of claims 1 to 4, wherein the compressor further comprises: a first piston, eccentrically arranged in the cavity of the first cylinder, the outer peripheral surface of the first piston, the inner surface of the first cylinder and the first sliding vane assembly enclose the first working cavity; The second piston is eccentrically arranged in the cavity of the second cylinder, and the outer peripheral surface of the second piston, the inner surface of the second cylinder and the second sliding vane assembly enclose the second working cavity; The inner diameter of the first cylinder is D1, the eccentricity of the first piston relative to the cavity of the first cylinder is e1, the height of the first cylinder is H1, and the exhaust pressure of the first cylinder is is P1; The inner diameter of the second cylinder is D2, the eccentricity of the second piston relative to the cavity of the second cylinder is e2, the height of the second cylinder is H2, and the exhaust pressure of the second cylinder is is P2; Wherein, P1<P2, 0.6≤(e1×(D1-e1)×H1)÷(e2×(D2-e2)×H2)≤1.9. 12. The compressor of claim 11, wherein the compressor further comprises: The crankshaft has a first eccentric part and a second eccentric part, the first piston is connected to the first eccentric part, and the second piston is connected to the second eccentric part. 13. A refrigeration equipment, characterized in that, comprising: A compressor as claimed in any one of claims 1 to 12. 14. The refrigeration equipment according to claim 13, wherein the refrigeration equipment further comprises: a first condenser, communicated with the first outlet port of the compressor; a first throttling element in communication with the first condenser; a first evaporator in communication with the first throttle element; a first accumulator, communicating with the first evaporator and the first suction passage of the compressor; a second condenser, communicated with the second outlet port of the compressor; a second throttling element in communication with the second condenser; a second evaporator in communication with the second throttle element; The second accumulator communicates with the second evaporator and the second suction passage of the compressor. 15. The refrigeration equipment according to claim 13, wherein the refrigeration equipment further comprises: a third condenser, communicated with the first outlet port of the compressor; a third throttling element, communicated with the third condenser; a third evaporator, communicated with the third throttle element; a third liquid accumulator, communicating with the third evaporator and the first suction passage and the second suction passage of the compressor; a fourth condenser, communicated with the second outlet port of the compressor; a fourth throttling element, communicated with the fourth condenser; a fourth evaporator, communicated with the fourth throttle element; The third liquid accumulator also communicates with the fourth evaporator and the first suction passage and the second suction passage of the compressor.

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