WO2024255526A1 - Compressor and refrigeration device - Google Patents

Abstract

A compressor (10) and a refrigeration device. The compressor (10) comprises a compressor body (100), a jet accumulator (200), and an air suction accumulator (300); the compressor body (100) comprises a pump body assembly; the jet accumulator (200) is in communication with the pump body assembly; the air suction accumulator (300) is in communication with the pump body assembly; and the jet accumulator (200) and/or the air suction accumulator (300) are arranged at one end of the compressor body (100) in the axial direction.

Description

Compressor and refrigeration equipment

This application claims priority to Chinese patent application No. 202310724578.0 filed on June 16, 2023, the entire contents of which are incorporated by reference into this application.

Technical Field

The present application relates to the technical field of refrigeration equipment, and in particular to a compressor and refrigeration equipment.

Background Art

The jet enthalpy increasing compressor adopts two-stage throttling intermediate jet technology and uses a flash evaporator for gas-liquid separation to achieve the enthalpy increasing effect. It compresses and sprays mixed cooling at medium and low pressures, and then compresses normally at high pressures to increase the compressor exhaust volume, thereby achieving the purpose of improving heating capacity in low temperature environments.

However, in the related art, the suction liquid reservoir and the jet liquid reservoir of the jet reheat compressor are often arranged on the side of the compressor, resulting in redundant compressor structure and wide radial dimension. It is only suitable for the cabinet of refrigeration equipment with larger volume, which is not conducive to the miniaturization of refrigeration equipment.

Technical issues

The main purpose of the present application is to provide a compressor, aiming to reduce the circumferential space occupied by the compressor.

Technical Solutions

The technical solution of this application proposes a compressor, comprising:

The compressor body, including the pump assembly;

A jet liquid reservoir connected to the pump assembly;

An air suction reservoir connected to the pump assembly;

The injection liquid reservoir and/or the suction liquid reservoir is arranged at one axial end of the compressor body.

In one embodiment, the suction liquid reservoir is disposed at one axial end of the compressor body, and the injection liquid reservoir is disposed on a peripheral side of the compressor body.

In one embodiment, the volume of the injection reservoir is not greater than the volume of the suction reservoir, and the diameter of the injection reservoir is smaller than the diameter of the suction reservoir.

In one embodiment, the suction liquid reservoir is disposed at the bottom of the compressor body.

In one embodiment, the compressor body includes a first side wall, the suction liquid reservoir includes a second side wall, and the first side wall and the second side wall are integrally formed.

In one embodiment, the compressor body includes a first side wall, an upper cover and a partition, the first side wall is arranged between the upper cover and the partition, and the first side wall is welded to the partition; the suction liquid storage tank includes a second side wall and a lower cover, the second side wall is arranged between the partition and the lower cover, and is welded to the partition, and there is a distance between the upper end surface of the second side wall and the lower end surface of the first side wall.

In one embodiment, the pump body assembly is provided with an air intake port and an air jet port, the air intake liquid reservoir is provided with a first air outlet communicated with the air intake port, and the air jet liquid reservoir is provided with a second air outlet communicated with the air jet port.

In one embodiment, the pump body assembly includes an upper bearing, a lower bearing and at least one cylinder, wherein the cylinder is arranged between the upper bearing and the lower bearing; the air intake port is arranged on the outer wall of the cylinder, and the outer wall of at least one of the upper bearing, the lower bearing and the cylinder is provided with the air injection port.

In one embodiment, the pump body assembly also includes a partition and two cylinders, wherein the partition is disposed between the two cylinders, the partition is provided with an air vent, the air vent connects the two cylinders, and the outer wall of the partition is provided with the jet port, the jet port is connected to the air vent.

In one embodiment, the pump body assembly further includes an air jet switch valve, which is disposed at the air jet port or the air vent to connect or block the air jet reservoir and the cylinder.

In one embodiment, the compressor includes at least one jet reservoir, the pump body assembly is provided with at least one jet port, and the number of the jet ports is not less than the number of the jet reservoirs.

In one embodiment, the compressor further comprises a connecting pipe, one end of which is connected to the air intake port, and the other end of which is passed through the second air outlet to the air intake reservoir, so as to connect the air intake reservoir with the pump body assembly.

In one embodiment, the connecting pipe is provided with an oil return hole, and the oil return hole is arranged in the air suction reservoir.

In one embodiment, the oil return hole is arranged on a side of the connecting pipe close to the bottom of the suction liquid reservoir.

The present application also provides a refrigeration device, the refrigeration device comprising a compressor, the compressor comprising:

The compressor body, including the pump assembly;

A jet liquid reservoir connected to the pump assembly;

An air suction reservoir, connected to the pump assembly;

The injection liquid reservoir and/or the suction liquid reservoir is arranged at one axial end of the compressor body.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related technologies, the drawings required for use in the embodiments or the related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

FIG1 is a schematic structural diagram of a compressor according to an embodiment of the present application;

FIG2 is a partial enlarged view of point A in FIG1;

FIG3 is a schematic structural diagram of a compressor in another embodiment of the present application;

FIG. 4 is a schematic structural diagram of a pump assembly according to an embodiment of the present application.

Description of Figure Numbers:

Label name Label name 10 compressor 111 Upper cover 100 Compressor body 112 First side wall 200 Jet reservoir 113 Separators 210 Second air outlet 120 Inlet 300 Air intake reservoir 130 Jet 310 First air outlet 140 Upper bearing 320 Second side wall 150 Lower bearing 330 Lower cover 160 cylinder 400 Connecting pipe 180 Jet switch valve 410 Oil return hole 170 Partition 171 Vent    

The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings.

Embodiments of the present invention

The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back...), such directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if the meaning of "and/or" appearing in the full text is to include three parallel schemes, taking "A and/or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

The jet reheat compressor adopts two-stage throttling intermediate jet technology and uses a flash evaporator for gas-liquid separation to achieve the enthalpy effect. The jet reheat technology adopts an economizer cycle design, and solves the problems of high compression ratio and high exhaust temperature through the principle of quasi-two-stage compression and intermediate cooling. The compressor of the air source heat pump using the jet reheat technology inhales a part of the intermediate pressure gas through the intermediate pressure suction hole, mixes it with the partially compressed refrigerant and then compresses it, realizing the process of two-stage compression with a single compressor, so that the air source heat pump using the jet reheat technology can adapt to lower outdoor ambient temperatures than ordinary air source heat pumps. At the same time, it increases the refrigerant flow in the condenser and increases the enthalpy difference between the main circulation loops, thereby greatly improving the efficiency of the compressor, making the air source heat pump using the jet reheat technology more energy-saving than ordinary air source heat pumps.

Specifically, the refrigerant coming out of the condenser in the jet enthalpy system is divided into two circuits: the main circuit is the refrigeration circuit, and the auxiliary circuit is the air supply circuit. The refrigerant liquid in the auxiliary circuit is reduced to a certain intermediate pressure by the electronic expansion valve and becomes a medium-pressure gas-liquid mixture, and heat exchanges with the higher temperature refrigerant liquid from the main circuit in the economizer. (The pressure of the "medium-pressure gas-liquid mixture" here is a relative concept, which means that the gas pressure of the refrigerant in the auxiliary circuit is higher than the gas pressure at the suction port of the compressor and lower than the gas pressure at the exhaust port.) The refrigerant liquid in the auxiliary circuit absorbs heat and becomes gas, which is replenished into the working chamber (compression chamber) of the compressor through the auxiliary air inlet of the compressor; at the same time, the refrigerant in the main circuit is supercooled, and this part of the supercooled refrigerant enters the evaporator (outdoor unit heat exchanger) after passing through the expansion valve.

In the evaporator, the refrigerant in the main circuit absorbs heat from the low-temperature environment and becomes a low-pressure gas that enters the compression chamber of the compressor. After a period of internal compression, the refrigerants in the main and auxiliary circuits are mixed in the working chamber of the compressor. Then, as the compression chamber rotates, the two parts of the refrigerant are compressed and mixed until the mixing process is completed. The mixed refrigerant is further compressed by the compressor and then discharged from the compressor. At this point, a complete closed jet enthalpy heat pump system working cycle is formed.

Please refer to Figures 1 and 3. The present application proposes a compressor 10, which includes a compressor body 100, a jet reservoir 200 and an intake reservoir 300. The compressor body 100 includes a pump body assembly; the jet reservoir 200 is connected to the pump body assembly; the intake reservoir 300 is connected to the pump body assembly; the jet reservoir 200 and/or the intake reservoir 300 are arranged at one end of the compressor body 100 in the axial direction.

Specifically, the refrigerant coming out of the condenser in the jet reheat system is divided into two paths. One path is a refrigeration circuit, in which the low-pressure refrigerant enters the suction reservoir 300 through the first air inlet pipe, and then enters the compression chamber of the pump body assembly from the suction reservoir 300 for compression; the other path is an air replenishment circuit, in which the medium-pressure refrigerant enters the jet reservoir 200 through the second air inlet pipe, and then enters the compression chamber of the pump body assembly from the jet reservoir 200, and mixes with the refrigerant from the suction reservoir 300 in the compression chamber of the pump body assembly, and then as the compression chamber of the pump body assembly rotates, the two parts of the refrigerant are compressed and mixed until the mixing process is completed, and the mixed refrigerant is further compressed by the pump body assembly and discharged from the exhaust port of the compressor body 100.

The compressor body 100 is roughly cylindrical, and the jet reservoir 200 and the suction reservoir 300 are arranged at one end of the compressor body 100 in the axial direction, and can be arranged at the top of the compressor body 100 or at the bottom of the compressor body 100. When the jet reservoir 200 and the suction reservoir 300 are arranged at one end of the compressor body 100 in the axial direction, the jet reservoir 200 and the suction reservoir 300 can be overlapped, or arranged in parallel, or one of the jet reservoir 200 and the suction reservoir 300 can be arranged at the top of the compressor body 100, and the other can be arranged at the bottom of the compressor body 100. In other embodiments, one of the jet reservoir 200 and the suction reservoir 300 can also be arranged at one end of the compressor body 100, and the other can be arranged at the peripheral side of the compressor body 100. The compressor body 100 can be vertical or horizontal.

By arranging at least one of the jet reservoir 200 and the suction reservoir 300 at one axial end of the compressor body 100, the radial dimension of the compressor 10 is reduced, and the space occupied by the compressor 10 in the circumferential direction is reduced, thereby reducing the occupied space of the refrigeration equipment box and realizing the miniaturization of the refrigeration equipment.

In one embodiment, the suction accumulator 300 is disposed at one end of the compressor body 100 in the axial direction, and the injection accumulator 200 is disposed at a peripheral side of the compressor body 100 .

Please refer to FIG. 1 and FIG. 3 . The suction liquid reservoir 300 is arranged at one end of the compressor body 100 in the axial direction. The suction liquid reservoir 300 can be arranged at the top of the compressor body 100 or at the bottom of the compressor body 100. The jet liquid reservoir 200 is arranged at the peripheral side of the compressor body 100. The jet liquid reservoir 200 can be close to the outer wall of the compressor body 100, or can be arranged at the outer side of the peripheral wall of the compressor body 100 and have a certain distance from the peripheral wall of the compressor body 100, or can be arranged at the inner side of the peripheral wall of the compressor body 100. The suction liquid reservoir 300 is arranged at one end of the compressor body 100 in the axial direction, and the jet liquid reservoir 200 is arranged at the peripheral side of the compressor body 100. The peripheral side of the compressor body 100 is only provided with the jet liquid reservoir 200, which reduces the radial size of the compressor 10 and reduces the space occupied by the compressor 10 in the circumferential direction, thereby reducing the occupied space of the refrigeration equipment box and realizing the miniaturization of the refrigeration equipment.

In one embodiment, the volume of the jetting reservoir 200 is not greater than the volume of the suction reservoir 300 , and the diameter of the jetting reservoir 200 is smaller than the diameter of the suction reservoir 300 .

Please refer to Figures 1 and 3. The refrigerant in the refrigeration circuit is stored in the suction reservoir 300, and the refrigerant compressed in the compression chamber of the pump body assembly is mainly supplied by the suction reservoir 300; the refrigerant in the air supply circuit is stored in the jet reservoir 200, which plays an auxiliary role. Therefore, the volume of the jet reservoir 200 is smaller than the volume of the suction reservoir 300, or the volume of the jet reservoir 200 is consistent with the volume of the suction reservoir 300. The diameter of the jet reservoir 200 is smaller than the diameter of the suction reservoir 300, and the height of the jet reservoir 200 is greater than the height of the suction reservoir 300. The jet reservoir 200 is arranged on the peripheral side of the compressor body 100. The larger height can better utilize the space in the axial direction of the compressor body 100, and the jet reservoir 200 can be installed more firmly. At the same time, the smaller diameter of the jet liquid reservoir 200 makes the jet liquid reservoir 200 occupy a smaller space in the circumferential direction of the compressor 10, further reducing the radial size of the compressor 10, thereby further reducing the occupied space of the refrigeration equipment box.

In one embodiment, the suction accumulator 300 is disposed at the bottom of the compressor body 100 .

Please refer to Figures 1 and 3. The suction liquid reservoir 300 is arranged at the bottom of the compressor body 100, so that the exhaust port of the compressor 10 is located at the upper end of the compressor 10. The refrigerant compressed by the pump body assembly is a high-temperature and high-pressure gaseous refrigerant. The exhaust port of the compressor 10 is arranged at the upper end of the compressor 10, which is more conducive to the flow and discharge of the refrigerant. The suction liquid reservoir 300 is arranged at the bottom of the compressor body 100, and the jet liquid reservoir 200 is arranged on the circumference of the compressor body 100. Only the jet liquid reservoir 200 is arranged on the circumference of the compressor body 100, which reduces the radial size of the compressor 10 and the space occupied by the compressor 10 in the circumferential direction, thereby reducing the occupied space of the refrigeration equipment box and realizing the miniaturization of the refrigeration equipment.

In one embodiment, the compressor body 100 includes a first side wall 112 , and the suction accumulator 300 includes a second side wall 320 . The first side wall 112 and the second side wall 320 are integrally formed.

Referring to FIG. 3 , the first side wall 112 and the second side wall 320 are integrally formed, and an inner cavity is formed between the first side wall 112 and the second side wall 320. The pump body assembly is disposed in the inner cavity, and the liquid storage cavity of the suction liquid reservoir 300 is formed in the inner cavity. The liquid storage cavity is located at the lower end of the pump body assembly. The first side wall 112 and the second side wall 320 are integrally formed, and the compressor 10 has better structural stability.

In one embodiment, the compressor body 100 includes a first side wall 112, an upper cover 111 and a partition 113, the first side wall 112 is arranged between the upper cover 111 and the partition 113, and the first side wall 112 is welded to the partition 113; the suction liquid storage tank 300 includes a second side wall 320 and a lower cover 330, the second side wall 320 is arranged between the partition 113 and the lower cover 330, and is welded to the partition 113, and there is a distance between the upper end surface of the second side wall 320 and the lower end surface of the first side wall 112.

Please refer to FIG. 1 . The first side wall 112 is cylindrical. The first side wall 112 is disposed between the upper cover 111 and the partition 113. The upper end of the first side wall 112 is connected to the upper cover 111, and the lower end of the first side wall 112 is welded to the partition 113. The upper cover 111, the first side wall 112 and the partition 113 are enclosed together to form a receiving cavity for installing the pump body assembly. The suction liquid storage tank 300 is disposed below the partition 113. The suction liquid storage tank 300 includes a second side wall 320 and a lower cover 330. The second side wall 320 is disposed between the partition 113 and the lower cover 330 and is welded to the partition 113. The partition 113, the second side wall 320 and the lower cover 330 are enclosed together to form a liquid storage cavity for storing the refrigerant of the refrigeration circuit. The partition 113 is roughly cup-shaped, including a cup wall and a cup bottom. The cup mouth of the partition 113 faces the pump body assembly, and the outer surface of the cup wall is fixedly connected to the inner surface of the first side wall 112, generally by welding. The cup bottom separates the reservoir cavity from the accommodating cavity of the compressor 10 body. The first side wall 112 of the compressor body 100 is connected to the shell of the reservoir through the partition 113, and there is a gap between the upper end surface of the second side wall 320 and the lower end surface of the first side wall 112, which can reduce the overall resonance of the compressor 10, thereby reducing the mechanical noise of the compressor 10.

In one embodiment, the pump body assembly is provided with an air intake port 120 and an air jet port 130 , the air intake reservoir 300 is provided with a first air outlet 310 communicating with the air intake port 120 , and the air jet reservoir 200 is provided with a second air outlet 210 communicating with the air jet port 130 .

Please refer to FIG. 1 and FIG. 2 , the pump body assembly is provided with an air inlet 120, and the air inlet reservoir 300 is provided with a first air outlet 310, and the first air outlet 310 is communicated with the air inlet 120. The refrigerant in the air inlet reservoir 300 flows out from the first air outlet 310 and enters the pump body assembly from the air inlet 120 to compress the refrigerant. The pump body assembly is also provided with an air jet 130, and the air jet reservoir 200 is provided with a second air outlet 210, and the second air outlet 210 is communicated with the air jet 130. The refrigerant in the air jet reservoir 200 flows out from the second air outlet 210 and enters the pump body assembly from the air jet 130 to mix with the refrigerant in the compression chamber of the pump body assembly, and then as the compression chamber of the pump body assembly rotates, the two parts of the refrigerant are compressed and mixed until the mixing process is completed, and the mixed refrigerant is further compressed by the pump body assembly and discharged from the exhaust port of the compressor body 100.

In one embodiment, the pump body assembly includes an upper bearing 140, a lower bearing 150 and at least one cylinder 160, and the cylinder 160 is arranged between the upper bearing 140 and the lower bearing 150; the air intake port 120 is arranged on the outer wall of the cylinder 160, and the outer wall of at least one of the upper bearing 140, the lower bearing 150 and the cylinder 160 is provided with an air injection port 130.

Please refer to FIG. 2 , the compressor body 100 further includes an upper bearing 140, the outer wall of the outer ring of the upper bearing 140 is connected to the inner wall of the shell of the compressor body 100, so as to be fixed together with the shell of the compressor body 100. The cylinder 160 is arranged between the upper bearing 140 and the lower bearing 150, the outer wall of the cylinder 160 is connected to the outer ring of the upper bearing 140 and the outer ring of the lower bearing 150, and the lower bearing 150 is thus fixedly connected to the upper bearing 140. The pump body assembly is sequentially: an upper bearing 140, a cylinder 160 and a lower bearing 150 from top to bottom. The compressor body 100 further includes a crankshaft, which is arranged in the pump body assembly, and the crankshaft is respectively connected to the inner rings of the upper bearing 140 and the lower bearing 150, and the upper bearing 140 and the lower bearing 150 play a supporting role for the crankshaft.

The crankshaft has a long axis portion, an eccentric portion, and a short axis portion. The crankshaft transmits the rotational force of the motor to the rotating piston in the cylinder 160, and drives the rotating piston to rotate to compress the refrigerant. The compressor 10 also includes a motor, and the crankshaft is connected to the motor. For example, the outer stator of the motor is fixed to the inner wall of the shell of the compressor body 100, and the inner rotor of the motor is sleeved on the crankshaft. The inner rotor is clamped and drives the crankshaft by cold pressing, but it is not limited to this. The inner rotor rotates relative to the outer stator so as to transmit the rotational force of the motor to the rotating piston in the cylinder 160 to compress the refrigerant.

The suction port 120 is provided on the outer wall of the cylinder 160, and the refrigerant in the suction accumulator 300 directly enters the cylinder 160 through the suction port 120 for compression. The jet port 130 may be provided on one of the upper bearing 140, the lower bearing 150 and the cylinder 160; or, two of the upper bearing 140, the lower bearing 150 and the cylinder 160 are provided with the jet port 130; or, the upper bearing 140, the lower bearing 150 and the cylinder 160 are all provided with the jet port 130. When the jet port 130 is provided on the cylinder 160, the refrigerant in the jet accumulator 200 directly enters the cylinder 160 from the jet port 130 on the cylinder 160 to mix with the refrigerant in the jet accumulator 200 and the refrigerant in the cylinder 160 from the suction accumulator 300. When the jet port 130 is disposed on the upper bearing 140 or the lower bearing 150, the upper bearing 140 or the lower bearing 150 is provided with a through hole communicating with the cylinder 160, and the refrigerant in the jet accumulator 200 enters the cylinder 160 through the through hole from the jet port 130. The jet port 130 is disposed on the upper bearing 140 or the lower bearing 150, which can avoid the phenomenon of insufficient jet volume or refrigerant gas reflux caused by unreasonable setting position of the jet port 130, thereby improving the performance of the rotary compressor 10.

In one embodiment, the pump body assembly also includes a partition 170 and two cylinders 160. The partition 170 is disposed between the two cylinders 160. The partition 170 is provided with a vent 171, which connects the two cylinders 160. The outer wall of the partition 170 is provided with a jet 130, which is connected to the jet 130.

Please refer to Figure 4. The pump body assembly includes two cylinders 160. The two cylinders 160 can be connected in parallel. The two cylinders 160 work independently. The suction liquid reservoir 300 provides low-pressure refrigerant to one of the cylinders 160, and the injection liquid reservoir 200 provides medium-pressure refrigerant to the other cylinder 160. In the case of parallel connection, the displacement of the two cylinders 160 can be the same or different, and the capacity requirements of the two cylinders 160 can be adjusted according to the displacement of the two cylinders 160. Of course, the two cylinders 160 can also be connected in series, and a connecting pipe is provided between the two cylinders 160, so that the gas discharged from one cylinder 160 continues to enter the other cylinder 160 for compression again. Alternatively, one of the cylinders 160 is connected to the other cylinder 160 through a heat exchanger for compression again, which is not limited here.

The partition 170 is arranged between the two cylinders 160, and the two opposite sides of the partition 170 are connected to the two cylinders 160 respectively. The partition 170 is provided with a vent 171 and a jet port 130, the vent 171 is connected to the two cylinders 160, and the jet port 130 is connected to the vent 171. After the medium-pressure refrigerant in the jet reservoir 200 enters the vent 171 from the jet port 130, it enters one of the cylinders 160 as needed, or enters the two cylinders 160 after being split, so that one jet reservoir 200 provides medium-pressure refrigerant for the two cylinders 160 for air replenishment. The jet port 130 is arranged on the partition 170, which can avoid the phenomenon of insufficient jet volume or refrigerant gas reflux caused by the unreasonable setting position of the jet port 130, thereby improving the performance of the rotary compressor 10.

In one embodiment, the pump assembly further includes an air jet switch valve 180 , which is disposed at the air jet port 130 or the air vent 171 to connect or block the air jet reservoir 200 and the cylinder 160 .

Please refer to FIG. 2 and FIG. 4 , the jet switch valve 180 is used to conduct or block the jet reservoir 200 and the cylinder 160. The jet switch valve 180 can be arranged at the jet port 130. When the jet port 130 is arranged at the upper bearing 140, the lower bearing 150, the cylinder 160 or the partition 170, the jet switch valve 180 is also correspondingly arranged at the upper bearing 140, the lower bearing 150, the cylinder 160 or the partition 170; the jet switch valve 180 can also be arranged at the vent 171, in which case the jet switch valve 180 is correspondingly arranged at the partition 170. When the jet switch valve 180 is opened, the jet reservoir 200 is conducted with the cylinder 160, and the medium-pressure refrigerant in the jet reservoir 200 can enter the cylinder 160; when the jet switch valve 180 is closed, the jet reservoir 200 is blocked with the cylinder 160, which can effectively prevent the backflow of the high-pressure refrigerant in the cylinder 160. The jet switch valve 180 can be a spherical valve, a cylindrical valve, a conical valve, a reed valve or a leaf valve, which is not limited here.

In one embodiment, the compressor 10 includes at least one jet reservoir 200 , and the pump body assembly is provided with at least one jet port 130 , and the number of the jet ports 130 is not less than the number of the jet reservoir 200 .

The compressor 10 may be provided with one, two, three or more jet reservoirs 200, and the plurality of reservoirs may be all provided at one end of the compressor body 100; or separately provided at both ends of the compressor body 100; or all provided at the peripheral side of the compressor body 100; or partially provided at one end of the compressor body 100 and partially provided at the peripheral side of the compressor body 100; or partially provided at both ends of the compressor body 100 and partially provided at the peripheral side of the compressor body 100. The pump body assembly may be provided with one, two, three or more jet ports 130, and the number of jet ports 130 may correspond to the number of jet reservoirs 200 one by one, and one jet reservoir 200 is connected to one jet port 130; the number of jet ports 130 may also be greater than the number of jet reservoirs 200, and one jet reservoir 200 is connected to at least one jet port 130.

In one embodiment, the compressor 10 further includes a connecting pipe 400 , one end of which is connected to the air intake port 120 , and the other end of which is passed through the second air outlet 210 to the air intake reservoir 300 to connect the air intake reservoir 300 with the pump assembly.

Please refer to FIG. 1 and FIG. 3 , the compressor 10 further includes a connecting pipe 400, a portion of which is arranged on the circumference of the compressor body 100, and a port thereof is connected to the air intake port 120, a portion of which is arranged on the circumference of the air intake reservoir 300, and another portion of the connecting pipe 400 passes through the second air outlet 210 and is arranged in the air intake reservoir 300. The air intake port 120 is connected to the second air outlet 210 through the connecting pipe 400, and the refrigerant in the air intake reservoir 300 enters the pump body assembly from the air intake reservoir 300 through the connecting pipe 400. Furthermore, the connecting pipe 400 is arranged below the jet reservoir 200, so that the space below the jet reservoir 200 can be reasonably utilized, and the radial size and occupied space of the compressor 10 can be further reduced.

In one embodiment, the connecting pipe 400 is provided with an oil return hole 410 , and the oil return hole 410 is provided in the suction liquid reservoir 300 .

Please refer to FIG. 1 and FIG. 3. Due to the long-term operation of the compressor 10, a certain amount of lubricating oil will be discharged from the main body of the compressor 10 along with the vaporized refrigerant, and will enter the suction reservoir 300 through the pipeline. In order to prevent the lubricating oil in the main body of the compressor 10 from continuously decreasing, an oil return hole 410 is provided on the connecting pipe 400, and the oil return hole 410 is provided in the suction reservoir 300. The oil return hole 410 can be provided at any position in the circumferential direction of the connecting pipe 400, such as the oil return hole 410 can be provided on one side of the connecting pipe 400 close to the bottom of the suction reservoir 300, or on the other side of the connecting pipe 400 away from the bottom of the suction reservoir 300, or at any position between the two. When the lubricating oil returns to the suction reservoir 300 along with the refrigerant, the lubricating oil and the liquid refrigerant are deposited at the bottom of the suction reservoir 300, and the lubricating oil layer is on the upper layer of the liquid refrigerant layer. When the liquid level at the bottom of the suction reservoir 300 rises to the oil return hole 410 and immerses into the lubricating oil layer, the lubricating oil enters the connecting pipe 400 from the oil return hole 410 and then returns to the compressor 10 body, thereby playing a lubricating and protective role for the compressor 10 body.

In one embodiment, the oil return hole 410 is disposed on one side of the connecting pipe 400 close to the bottom of the suction liquid reservoir 300 .

Please refer to FIG. 1 and FIG. 3 , the oil return hole 410 is arranged on one side of the connecting pipe 400 close to the bottom of the air intake reservoir 300. When the oil return hole 410 is arranged on the other side of the connecting pipe 400 away from the bottom of the air intake reservoir 300, the distance from the lubricating oil layer to the bottom of the air intake reservoir 300 is at least the same as the diameter of the connecting pipe 400, which may cause untimely and difficult oil return, thereby causing damage to the main body of the compressor 10. Since the oil return hole 410 is arranged on one side of the connecting pipe 400 close to the bottom of the air intake reservoir 300, the lubricating oil deposited at the bottom of the air intake reservoir 300 enters the main body of the compressor 10 from the connecting pipe 400 through the suction force of the main body of the compressor 10, thereby playing a lubricating and protective role for the main body of the compressor 10.

The present application also proposes a refrigeration device, which includes a compressor 10. The specific structure of the compressor 10 refers to the above embodiment. Since the refrigeration device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

The above description is only an optional embodiment of the present application, and does not limit the patent scope of the present application. All equivalent structural changes made based on the concept of the present application and the contents of the present application description and drawings, or direct/indirect application in other related technical fields are included in the patent protection scope of the present application.

Claims (15)

A compressor, comprising: The compressor body, including the pump assembly; A jet liquid reservoir connected to the pump assembly; An air suction reservoir connected to the pump assembly; The injection liquid reservoir and/or the suction liquid reservoir is arranged at one axial end of the compressor body. The compressor according to claim 1, wherein the suction accumulator is disposed at one end of the compressor body in the axial direction, and the injection accumulator is disposed on a peripheral side of the compressor body. The compressor of claim 2, wherein the volume of the injection reservoir is not greater than the volume of the suction reservoir, and the diameter of the injection reservoir is smaller than the diameter of the suction reservoir. The compressor according to claim 2, wherein the suction accumulator is disposed at a bottom of the compressor body. The compressor according to any one of claims 2 to 4, wherein the compressor body comprises a first side wall, the suction accumulator comprises a second side wall, and the first side wall and the second side wall are integrally formed. The compressor according to any one of claims 2 to 4, wherein the compressor body comprises a first side wall, an upper cover and a partition, the first side wall is arranged between the upper cover and the partition, and the first side wall is welded to the partition; the suction liquid reservoir comprises a second side wall and a lower cover, the second side wall is arranged between the partition and the lower cover and is welded to the partition, and there is a distance between the upper end surface of the second side wall and the lower end surface of the first side wall. The compressor according to any one of claims 1 to 6, wherein the pump body assembly is provided with an air intake port and an air jet port, the air intake reservoir is provided with a first air outlet connected to the air intake port, and the air jet reservoir is provided with a second air outlet connected to the air jet port. The compressor as described in claim 7, wherein the pump body assembly includes an upper bearing, a lower bearing and at least one cylinder, and the cylinder is arranged between the upper bearing and the lower bearing; the air intake port is arranged on the outer wall of the cylinder, and the outer wall of at least one of the upper bearing, the lower bearing and the cylinder is provided with the air injection port. The compressor as described in claim 8, wherein the pump body assembly further comprises a partition, and two of the cylinders, the partition is arranged between the two cylinders, the partition is provided with an air vent, the air vent connects the two cylinders, the outer wall of the partition is provided with the jet port, and the jet port is connected to the air vent. The compressor according to claim 9, wherein the pump body assembly further comprises a jet switch valve, wherein the jet switch valve is disposed at the jet port or the vent to connect or block the jet reservoir and the cylinder. The compressor according to any one of claims 7 to 10, wherein the compressor comprises at least one jet reservoir, the pump body assembly is provided with at least one jet port, and the number of the jet ports is not less than the number of the jet reservoirs. The compressor according to any one of claims 7 to 11, wherein the compressor further comprises a connecting pipe, one end of which is connected to the air intake port, and the other end of which is passed through the second air outlet to the air intake reservoir to connect the air intake reservoir with the pump body assembly. The compressor according to claim 12, wherein the connecting pipe is provided with an oil return hole, and the oil return hole is provided in the suction accumulator. The compressor according to claim 13, wherein the oil return hole is provided on a side of the connecting pipe close to a bottom of the suction accumulator. A refrigeration device, comprising the compressor according to any one of claims 1 to 14.