CN220101540U - Compressor and refrigeration equipment - Google Patents

Abstract

The technical scheme of the utility model discloses a compressor and refrigeration equipment, wherein the compressor comprises a compressor body, an air injection liquid reservoir and an air suction liquid reservoir, and the compressor body comprises a pump body component; the jet liquid reservoir is communicated with the pump body assembly; the suction liquid reservoir is communicated with the pump body assembly; the air injection liquid reservoir and/or the air suction liquid reservoir is/are arranged at one axial end of the compressor body. According to the technical scheme, at least one of the air injection liquid reservoir and the air suction liquid reservoir is arranged at one end of the axial direction of the compressor body, so that the space occupied by the compressor in the circumferential direction is reduced, the occupied space of the refrigeration equipment box body is reduced, and the miniaturization of the refrigeration equipment is realized.

Description

Compressor and refrigeration equipment

Technical Field

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

Background

The jet enthalpy-increasing compressor adopts a two-stage throttling intermediate jet technology, and adopts a flash evaporator to perform gas-liquid separation, so as to realize the enthalpy-increasing effect. The air injection cooling device is used for compressing air while injecting air for mixed cooling at medium and low pressure, and then compressing normally at high pressure, so that the exhaust capacity of the compressor is improved, and the aim of improving the heating capacity in a low-temperature environment is fulfilled.

However, in the related art, the suction accumulator and the jet accumulator of the enhanced vapor injection compressor are often disposed at the side portion of the compressor, resulting in redundancy of the compressor structure, and a wide radial dimension, which is only suitable for a case of a refrigeration apparatus having a large volume, and is disadvantageous for miniaturization of the refrigeration apparatus.

Disclosure of Invention

The utility model mainly aims to provide a compressor, which aims to reduce the circumferential occupied space of the compressor.

The technical scheme of the utility model provides a compressor, which comprises the following components:

the compressor body comprises a pump body assembly;

the jet liquid reservoir is communicated with the pump body assembly;

the suction liquid reservoir is communicated with the pump body assembly;

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

In an embodiment, the air suction reservoir is disposed at one axial end of the compressor body, and the air injection reservoir is disposed at a circumferential side of the compressor body.

In an embodiment, the volume of the jet reservoir is no greater than the volume of the suction reservoir, and the diameter of the jet reservoir is less than the diameter of the suction reservoir.

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

In one embodiment, the compressor body includes a first sidewall and the suction reservoir includes a second sidewall, the first sidewall being integrally formed with the second sidewall.

In one embodiment, the compressor body includes a first sidewall, an upper cover, and a partition, the first sidewall being disposed between the upper cover and the partition, the first sidewall being welded to the partition; the air suction liquid reservoir comprises a second side wall and a lower cover, wherein the second side wall is arranged between the partition piece and the lower cover and welded with the partition piece, and a space is reserved between the upper end face of the second side wall and the lower end face of the first side wall.

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

In one embodiment, the pump body assembly comprises an upper bearing, a lower bearing, and at least one cylinder disposed between the upper bearing and the lower bearing; the air suction port is arranged on the outer wall of the air cylinder, and the air jet port is arranged on the outer wall of at least one of the upper bearing, the lower bearing and the air cylinder.

In an embodiment, the pump body assembly further comprises a partition plate and two air cylinders, the partition plate is arranged between the two air cylinders, the partition plate is provided with an air vent, the air vent is communicated with the two air cylinders, the outer wall of the partition plate is provided with an air jet, and the air jet is communicated with the air vent.

In an embodiment, the pump body assembly further includes an air injection switch valve, where the air injection switch valve is disposed at the air injection port or the air vent, and is used for conducting or blocking the air injection reservoir and the air cylinder.

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

In an embodiment, the compressor further comprises a connecting pipe, one end of the connecting pipe is communicated with the air suction port, and the other end of the connecting pipe is penetrated through the air suction liquid reservoir by the second air outlet so as to communicate the air suction liquid reservoir with the pump body assembly.

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

In an embodiment, the oil return hole is disposed at a side of the connecting pipe near the bottom of the suction reservoir.

The present utility model also provides a refrigeration appliance including a compressor, the compressor including:

the compressor body comprises a pump body assembly;

the jet liquid reservoir is communicated with the pump body assembly;

the suction liquid reservoir is communicated with the pump body assembly;

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

According to the technical scheme, at least one of the air injection liquid reservoir and the air suction liquid reservoir is arranged at one end of the axial direction of the compressor body, so that the space occupied by the compressor in the circumferential direction is reduced, the occupied space of the refrigeration equipment box body is reduced, and the miniaturization of the refrigeration equipment is realized.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view showing a structure of a compressor according to an embodiment of the present utility model;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a schematic view showing a structure of a compressor according to another embodiment of the present utility model;

fig. 4 is a schematic structural diagram of a pump assembly according to an embodiment of the utility model.

Reference numerals illustrate:

reference numerals	Name of the name	Reference numerals	Name of the name
				10	Compressor	111	Upper cover
100	Compressor body	112	First side wall
				200	Jet liquid storage device	113	Partition piece
210	Second air outlet	120	Suction port
				300	Air suction liquid storage device	130	Air jet
310	First air outlet	140	Upper bearing
				320	A second side wall	150	Lower bearing
330	Lower cover	160	Cylinder
				400	Connecting pipe	180	Jet switch valve
410	Oil return hole	170	Partition board
				171	Vent opening

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, if the meaning of "and/or" is presented throughout this document, it is intended to include three schemes in parallel, taking "a and/or B" as an example, including a scheme, or B scheme, or a scheme where a and B meet simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The jet enthalpy-increasing compressor adopts a two-stage throttling intermediate jet technology, and adopts a flash evaporator to perform gas-liquid separation, so as to realize the enthalpy-increasing effect. The jet enthalpy increasing technology adopts the circulation design of an economizer, and solves the problems of high compression ratio and high exhaust temperature through the principle of quasi-secondary compression and intermediate cooling. The compressor of the air source heat pump adopting the jet enthalpy increasing technology sucks a part of intermediate pressure gas through the intermediate pressure suction hole, and mixes the intermediate pressure gas with the partially compressed refrigerant and compresses the mixture, so that the process of realizing two-stage compression by a single compressor is realized, and the air source heat pump adopting the jet enthalpy increasing technology can adapt to the outdoor environment temperature lower than that of the common air source heat pump. The refrigerant flow in the condenser is increased, the enthalpy difference between the main circulation loops is increased, and therefore the efficiency of the compressor is greatly improved, and the air source heat pump adopting the jet enthalpy increasing technology has a more remarkable energy-saving effect compared with the common air source heat pump.

Specifically, the refrigerant exiting the condenser in the enhanced vapor injection system is split into two paths: the main loop is a refrigeration loop, and the auxiliary loop is an air supplementing loop. The refrigerant liquid in the auxiliary loop is reduced to a certain intermediate pressure through the electronic expansion valve and then becomes a medium-pressure gas-liquid mixture, and heat exchange is carried out between the medium-pressure gas-liquid mixture and the refrigerant liquid with higher temperature from the main loop in the economizer. (the "pressure of medium-pressure gas-liquid mixture" herein is a relative concept, meaning that the pressure of the refrigerant in the auxiliary circuit is higher than the pressure at the suction port of the compressor and lower than the pressure at the discharge port.) the refrigerant liquid absorption heat of the auxiliary circuit becomes gas, which is fed into the compressor working chamber (compression chamber) through the auxiliary inlet port of the compressor; at the same time, the refrigerant of the main circuit is supercooled, and the supercooled refrigerant passes through the expansion valve and then enters the evaporator (outdoor heat exchanger).

In the evaporator, the refrigerant of the main loop absorbs heat in a low-temperature environment and becomes low-pressure gas to enter a compression cavity of the compressor, after the refrigerant is compressed for one period, the refrigerant of the main loop and the refrigerant of the auxiliary loop are mixed in a working cavity of the compressor, and then the two parts of the refrigerant are mixed while being compressed along with the rotation of the compression cavity until the mixing process is finished, and the mixed refrigerant is further compressed by the compressor and then is discharged out of the compressor. Thus, a complete closed working cycle of the enhanced vapor injection heat pump system is formed.

Referring to fig. 1 and 3, the present utility model proposes a compressor 10, wherein the compressor 10 comprises a compressor body 100, a jet liquid reservoir 200 and a suction liquid reservoir 300, and the compressor body 100 comprises a pump body assembly; the jet liquid reservoir 200 is communicated with the pump body assembly; the suction reservoir 300 communicates with the pump body assembly; the injection reservoir 200 and/or the suction reservoir 300 are provided at one end of the compressor body 100 in the axial direction.

Specifically, the refrigerant from the condenser in the jet enthalpy-increasing system is divided into two paths, one path is a refrigeration loop, and the low-pressure refrigerant in the loop enters the suction liquid reservoir 300 through the first air inlet pipe and then enters the compression cavity of the pump body assembly from the suction liquid reservoir 300 for compression; the other path is an air supplementing loop, medium-pressure refrigerant in the loop enters the air injection liquid storage device 200 through the second air inlet pipe, then enters the compression cavity of the pump body assembly from the air injection liquid storage device 200, is mixed with the refrigerant in the compression cavity of the pump body assembly from the air suction liquid storage device 300, and then is mixed while being compressed along with the rotation of the compression cavity of the pump body assembly until the mixing process is finished, and the mixed refrigerant is further compressed by the pump body assembly and then is discharged from the air outlet of the compressor body 100.

The compressor body 100 is substantially cylindrical, and the air injection reservoir 200 and the air suction reservoir 300 are provided at one axial end of the compressor body 100, and may be provided at the top of the compressor body 100 or at the bottom of the compressor body 100. When the air injection reservoir 200 and the air suction reservoir 300 are disposed at one axial end of the compressor body 100, the air injection reservoir 200 and the air suction reservoir 300 may be disposed in an overlapping manner, or may be disposed in parallel, or one of the air injection reservoir 200 and the air suction reservoir 300 may be disposed at the top of the compressor body 100, and the other may be disposed at the bottom of the compressor body 100. In other embodiments, one of the jet liquid reservoir 200 and the suction liquid reservoir 300 may be provided at one end of the compressor body 100, and the other may be provided at the peripheral side of the compressor body 100. The compressor body 100 may be vertical or horizontal.

By disposing at least one of the air injecting reservoir 200 and the air sucking reservoir 300 at one axial end of the compressor body 100, the radial dimension of the compressor 10 is reduced, the space occupied in the circumferential direction of the compressor 10 is reduced, and thus the occupied space of the refrigerator case is reduced, and miniaturization of the refrigerator is achieved.

In one embodiment, the suction accumulator 300 is disposed at one axial end of the compressor body 100, and the jet accumulator 200 is disposed at a circumferential side of the compressor body 100.

Referring to fig. 1 and 3, the suction accumulator 300 is disposed at one axial end of the compressor body 100, and the suction accumulator 300 may be disposed at the top of the compressor body 100 or at the bottom of the compressor body 100. The air injection liquid reservoir 200 is disposed at the peripheral side of the compressor body 100, and the air injection liquid reservoir 200 may be tightly attached to the outer wall of the compressor body 100, may be disposed at the outer side of the peripheral wall of the compressor body 100, may have a certain distance from the peripheral wall of the compressor body 100, and may be disposed at the inner side of the peripheral wall of the compressor body 100. The suction accumulator 300 is provided at one end of the compressor body 100 in the axial direction, and the jet accumulator 200 is provided at the circumferential side of the compressor body 100. Only the jet liquid reservoir 200 is disposed on the circumferential side of the compressor body 100, so that the radial size of the compressor 10 is reduced, the space occupied by the compressor 10 in the circumferential direction is reduced, the occupied space of the refrigeration equipment box is reduced, and the miniaturization of the refrigeration equipment is realized.

In one embodiment, the volume of the jet reservoir 200 is no greater than the volume of the suction reservoir 300, and the diameter of the jet reservoir 200 is less than the diameter of the suction reservoir 300.

Referring to fig. 1 and 3, the refrigerant stored in the suction accumulator 300 is the refrigerant in the refrigeration circuit, and the refrigerant compressed in the compression chamber of the pump body assembly is mainly supplied by the suction accumulator 300; stored in the jet accumulator 200 is refrigerant in the air make-up circuit, which serves as an auxiliary function. Thus, 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 corresponds to 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 liquid reservoir 200 is provided at the circumferential side of the compressor body 100, a larger height can better utilize the space in the axial direction of the compressor body 100, and the jet liquid reservoir 200 can be installed more firmly. Meanwhile, the smaller diameter of the jet liquid reservoir 200 makes the space occupied by the jet liquid reservoir 200 in the circumferential direction of the compressor 10 smaller, and further reduces the radial dimension of the compressor 10, thereby further reducing the occupied space of the refrigeration equipment box.

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

Referring to fig. 1 and 3, the suction accumulator 300 is disposed at the bottom of the compressor body 100, so that the air outlet of the compressor 10 is located at the upper end of the compressor 10, the refrigerant compressed by the pump assembly is a high-temperature and high-pressure gaseous refrigerant, and the air outlet of the compressor 10 is disposed at the upper end of the compressor 10 to be more beneficial to the flow and discharge of the refrigerant. The suction reservoir 300 is provided at the bottom of the compressor body 100, and the jet reservoir 200 is provided at the circumferential side of the compressor body 100. Only the jet liquid reservoir 200 is disposed on the circumferential side of the compressor body 100, so that the radial size of the compressor 10 is reduced, the space occupied by the compressor 10 in the circumferential direction is reduced, the occupied space of the refrigeration equipment box is reduced, and the miniaturization of the refrigeration equipment is realized.

In one embodiment, the compressor body 100 includes a first sidewall 112, and the suction reservoir 300 includes a second sidewall 320, the first sidewall 112 being integrally formed with the second sidewall 320.

Referring to fig. 3, the first side wall 112 and the second side wall 320 are integrally formed, the first side wall 112 and the second side wall 320 are formed with an inner cavity, the pump assembly is disposed in the inner cavity, the liquid storage cavity of the air suction liquid storage device 300 is formed in the inner cavity, and the liquid storage cavity is disposed at the lower end of the pump assembly. The first side wall 112 and the second side wall 320 are integrally formed, so that the structural stability of the compressor 10 is better.

In one embodiment, the compressor body 100 includes a first sidewall 112, an upper cover 111, and a partition 113, the first sidewall 112 being disposed between the upper cover 111 and the partition 113, the first sidewall 112 being welded to the partition 113; the suction reservoir 300 includes a second sidewall 320 and a lower cover 330, the second sidewall 320 is disposed between the partition 113 and the lower cover 330 and welded with the partition 113, and a space is provided between an upper end surface of the second sidewall 320 and a lower end surface of the first sidewall 112.

Referring to fig. 1, the first sidewall 112 has a cylindrical shape, the first sidewall 112 is disposed between the upper cover 111 and the partition 113, an upper end of the first sidewall 112 is connected to the upper cover 111, and a lower end of the first sidewall 112 is welded to the partition 113. The upper cover 111, the first sidewall 112 and the partition 113 are collectively enclosed to form a receiving chamber for mounting the pump body assembly. The suction reservoir 300 is disposed under the partition 113, and the suction reservoir 300 includes a second sidewall 320 and a lower cover 330, the second sidewall 320 being disposed between the partition 113 and the lower cover 330 and being welded to the partition 113. The partition 113, the second sidewall 320 and the lower cover 330 together enclose a liquid storage chamber for storing the refrigerant of the refrigeration circuit. The divider 113 is generally cup-shaped and includes a cup wall and a cup bottom. The cup opening of the partition 113 faces the pump body assembly, and the outer surface of the cup wall is fixedly connected with the inner surface of the first side wall 112, generally in a welding mode. The cup bottom separates the reservoir chamber from the receiving chamber of the compressor 10 body. The first side wall 112 of the compressor body 100 is connected with the housing of the accumulator through the partition 113, and the upper end surface of the second side wall 320 is spaced from the lower end surface of the first side wall 112, so that the resonance of the whole compressor 10 can be reduced, and the mechanical noise of the compressor 10 can be reduced.

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

Referring to fig. 1 and 2, the pump body assembly is provided with an air suction port 120, the air suction reservoir 300 is provided with a first air outlet 310, and the first air outlet 310 is communicated with the air suction port 120. The refrigerant in the suction accumulator 300 flows out of the first air outlet 310 and enters the pump body assembly from the suction port 120 to be compressed. The pump body assembly is also provided with an air jet 130, 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 jet accumulator 200 flows out from the second air outlet 210 and enters the pump body assembly from the air jet 130 to be mixed with the refrigerant in the compression chamber of the pump body assembly, and then the two parts of the refrigerant are compressed and mixed until the mixing process is finished along with the rotation of the compression chamber of the pump body assembly, and the mixed refrigerant is further compressed by the pump body assembly and then discharged from the air outlet 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, the cylinder 160 being disposed between the upper bearing 140 and the lower bearing 150; the suction port 120 is provided at an outer wall of the cylinder 160, and the air ejection port 130 is provided at an outer wall of at least one of the upper bearing 140, the lower bearing 150, and the cylinder 160.

Referring to fig. 2, the compressor body 100 further includes an upper bearing 140, and an outer wall of an outer ring of the upper bearing 140 is connected with an inner wall of a housing of the compressor body 100 to be fixed with the housing of the compressor body 100. The cylinder 160 is disposed between the upper bearing 140 and the lower bearing 150, an outer wall of the cylinder 160 is connected with an outer ring of the upper bearing 140 and an outer ring of the lower bearing 150, and the lower bearing 150 is thereby fixedly connected with the upper bearing 140. The pump body component comprises the following components in sequence from top to bottom: an upper bearing 140, a cylinder 160, and a lower bearing 150. The compressor body 100 further includes a crankshaft penetrating the pump body assembly, the crankshaft being connected with inner rings of the upper bearing 140 and the lower bearing 150, respectively, the upper bearing 140 and the lower bearing 150 supporting the crankshaft.

The crankshaft has a long shaft portion, an eccentric portion, and a short shaft portion, and transmits a rotational force of the motor to the rotary pistons in the cylinders 160, respectively, and drives the rotary pistons to rotate to compress a refrigerant. The compressor 10 further includes a motor, the crankshaft is connected with the motor, for example, an outer stator of the motor is fixed on an inner wall of a housing of the compressor body 100, an inner rotor of the motor is sleeved on the crankshaft, and the inner rotor is tightly held by cold pressing and drives the crankshaft, but not limited thereto. The inner rotor rotates relative to the outer stator to transmit the rotational force of the motor to the rotary piston within the cylinder 160 to compress the refrigerant.

The suction port 120 is provided at an outer wall of the cylinder 160, and the refrigerant in the suction accumulator 300 directly enters the cylinder 160 through the suction port 120 to be compressed. The gas ejection port 130 may be provided at 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 gas ejection port 130; alternatively, the upper bearing 140, the lower bearing 150, and the cylinder 160 are provided with the gas ejection port 130. When the air jet 130 is provided on the cylinder 160, the refrigerant in the air jet reservoir 200 directly enters the cylinder 160 from the air jet 130 on the cylinder 160 to mix with the refrigerant in the air jet reservoir 200 and the refrigerant in the cylinder 160 from the suction reservoir 300. When the air jet 130 is provided on the upper bearing 140 or the lower bearing 150, the upper bearing 140 or the lower bearing 150 is provided with a port communicating with the cylinder 160, and the refrigerant in the air jet reservoir 200 enters the cylinder 160 from the air jet 130 through the port. The air jet 130 is arranged on the upper bearing 140 or the lower bearing 150, so that the phenomenon of insufficient air jet or refrigerant gas backflow caused by unreasonable arrangement position of the air jet 130 can be avoided, and the performance of the rotary compressor 10 is improved.

In one embodiment, the pump body assembly further comprises a partition 170 and two air cylinders 160, the partition 170 is arranged between the two air cylinders 160, the partition 170 is provided with an air port 171, the air port 171 is communicated with the two air cylinders 160, the outer wall of the partition 170 is provided with an air nozzle 130, and the air nozzle 130 is communicated with the air port 171.

Referring to fig. 4, the diaphragm body assembly includes two cylinders 160, which may be connected in parallel between the two cylinders 160, the two cylinders 160 independently operate, the suction accumulator 300 supplies low-pressure refrigerant to one of the cylinders 160, and the jet accumulator 200 supplies medium-pressure refrigerant to the other cylinder 160. In the case of parallel connection, the displacements of the two cylinders 160 may be the same or different, and the capacity requirements of the two cylinders 160 may be adjusted according to the displacements of the two cylinders 160. Of course, two cylinders 160 may be connected in series, and a communication 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 may be connected to the other cylinder 160 via a heat exchanger to compress again, without limitation.

The diaphragm 170 is disposed between the two cylinders 160, and opposite sides of the diaphragm 170 are connected to the two cylinders 160, respectively. The partition 170 is provided with a vent 171 and a gas nozzle 130, the vent 171 communicates with the two cylinders 160, and the gas nozzle 130 communicates with the vent 171. The medium-pressure refrigerant in the jet liquid reservoir 200 enters one of the cylinders 160 after entering the air vent 171 from the air vent 130, or enters the two cylinders 160 after being split, so as to realize that one jet liquid reservoir 200 provides medium-pressure refrigerant for the two cylinders 160 for air supplementing. The air jet 130 is arranged on the partition 170, so that the phenomenon of insufficient air jet quantity or refrigerant gas backflow caused by unreasonable arrangement position of the air jet 130 can be avoided, and the performance of the rotary compressor 10 is improved.

In an embodiment, the pump body assembly further includes a jet switch valve 180, where the jet switch valve 180 is disposed at the jet port 130 or the vent 171 for conducting or blocking the jet liquid reservoir 200 and the air cylinder 160.

Referring to fig. 2 and 4, the air injection switch valve 180 is used for conducting or blocking the air injection reservoir 200 and the air cylinder 160, the air injection switch valve 180 may be disposed at the air injection port 130, and when the air injection port 130 is disposed at the upper bearing 140, the lower bearing 150, the air cylinder 160 or the partition 170, the air injection switch valve 180 is also correspondingly disposed at the upper bearing 140, the lower bearing 150, the air cylinder 160 or the partition 170; the air injection switch valve 180 may be disposed at the air vent 171, and the air injection switch valve 180 is disposed at the partition 170. When the air injection switch valve 180 is opened, the air injection reservoir 200 is communicated with the air cylinder 160, and medium-pressure refrigerant in the air injection reservoir 200 can enter the air cylinder 160; when the jet on-off valve 180 is closed, the jet liquid reservoir 200 is blocked from the cylinder 160, and the backflow of the high pressure refrigerant in the cylinder 160 can be effectively prevented. The air injection switching valve 180 may be a ball valve, a cylinder valve, a cone valve, a reed valve, or a leaf valve, without limitation.

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 jet ports 130 is not less than the number of jet reservoirs 200.

The compressor 10 may be provided with one, two, three or more than three air injection reservoirs 200, and a plurality of reservoirs may be all provided at one end of the compressor body 100; or are respectively arranged at two ends of the compressor body 100; or are all provided on the circumferential side of the compressor body 100; or is partially disposed at one end of the compressor body 100 and partially disposed at the circumferential side of the compressor body 100; or partially provided at both ends of the compressor body 100 and partially provided at the circumferential side of the compressor body 100. The pump body assembly can be provided with one, two, three or more than three air jet ports 130, the number of the air jet ports 130 can be in one-to-one correspondence with the number of the air jet liquid reservoirs 200, and one air jet liquid reservoir 200 is communicated with one air jet port 130; the number of air jets 130 may also be greater than the number of air jet reservoirs 200, with one air jet reservoir 200 in communication with at least one air jet 130.

In an embodiment, the compressor 10 further includes a connection pipe 400, one end of the connection pipe 400 is connected to the suction port 120, and the other end of the connection pipe 400 is penetrated through the suction liquid reservoir 300 by the second air outlet 210 so as to connect the suction liquid reservoir 300 with the pump body assembly.

Referring to fig. 1 and 3, the compressor 10 further includes a connection pipe 400, a portion of the connection pipe 400 is disposed on the peripheral side of the compressor body 100, the port of the connection pipe 400 is communicated with the air suction port 120, a portion of the connection pipe 400 is disposed on the peripheral side of the air suction reservoir 300, and another portion of the connection pipe 400 passes through the second air outlet 210 and is disposed in the air suction reservoir 300. The suction port 120 communicates with the second air outlet 210 through a connection pipe 400, and the refrigerant in the suction accumulator 300 enters the pump body assembly from the suction accumulator 300 through the connection pipe 400. Further, the connection pipe 400 is disposed below the jet liquid reservoir 200, so that the space below the jet liquid reservoir 200 can be reasonably utilized, and the radial size and the occupied space of the compressor 10 can be further reduced.

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

Referring to fig. 1 and 3, due to the long-term operation of the compressor 10, a certain amount of lubricating oil is discharged from the main body of the compressor 10 along with vaporized refrigerant, and then enters the suction accumulator 300 through the pipeline. In order to prevent the lubricant oil in the main body of the compressor 10 from being continuously reduced, an oil return hole 410 is provided in the connection pipe 400, and the oil return hole 410 is provided in the suction accumulator 300. The oil return hole 410 may be disposed at any position in the circumferential direction of the connection pipe 400, for example, the oil return hole 410 may be disposed at one side of the connection pipe 400 near the bottom of the suction accumulator 300, or may be disposed at the other side of the connection pipe 400 facing away from the bottom of the suction accumulator 300, or may be disposed at any position therebetween. After the lubricating oil returns to the suction accumulator 300 with the refrigerant, the lubricating oil and the liquid refrigerant are deposited at the bottom of the suction accumulator 300, and the lubricating oil layer is on top of the liquid refrigerant layer. When the liquid level at the bottom of the suction accumulator 300 rises to the point that the oil return hole 410 is immersed in the lubricating oil layer, the lubricating oil enters the connecting pipe 400 from the oil return hole 410 and returns to the main body of the compressor 10, thereby protecting the main body of the compressor 10.

In one embodiment, the oil return hole 410 is provided at one side of the connection pipe 400 near the bottom of the suction accumulator 300.

Referring to fig. 1 and 3, the oil return hole 410 is provided at one side of the connection pipe 400 near the bottom of the suction accumulator 300. When the oil return hole 410 is provided at the other side of the connection pipe 400 facing away from the bottom of the suction accumulator 300, the distance from the lubricant layer to the bottom of the suction accumulator 300 is at least as large as the diameter of the connection pipe 400, which may cause untimely oil return and difficulty in oil return, so that damage to the main body of the compressor 10 may be caused. Since the oil return hole 410 is provided at one side of the connection pipe 400 near the bottom of the suction accumulator 300, the lubricating oil precipitated at the bottom of the suction accumulator 300 is introduced into the compressor 10 body from the connection pipe 400 by the suction force of the compressor 10 body, thereby providing lubrication protection to the compressor 10 body.

The present utility model also proposes a refrigeration device, which includes a compressor 10, where the specific structure of the compressor 10 refers to the above embodiment, and since the refrigeration device adopts all the technical solutions of all the above embodiments, at least has all the beneficial effects brought by the technical solutions of the above embodiments, and will not be described in detail herein.

The foregoing description is only of the optional embodiments of the present utility model, and is not intended to limit the scope of the utility model, and all equivalent structural modifications made by the present description and accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the present utility model.

Claims (15)

1. A compressor, comprising:

the compressor body comprises a pump body assembly;

the jet liquid reservoir is communicated with the pump body assembly;

the suction liquid reservoir is communicated with the pump body assembly;

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

2. The compressor of claim 1, wherein the suction reservoir is provided at one end of the compressor body in an axial direction, and the injection reservoir is provided at a circumferential side of the compressor body.

3. The compressor of claim 2, wherein the volume of the jet reservoir is no greater than the volume of the suction reservoir and the diameter of the jet reservoir is less than the diameter of the suction reservoir.

4. The compressor of claim 2, wherein the suction accumulator is provided at a bottom of the compressor body.

5. The compressor of any one of claims 2-4, wherein the compressor body includes a first sidewall and the suction accumulator includes a second sidewall, the first sidewall being integrally formed with the second sidewall.

6. The compressor of any one of claims 2 to 4, wherein the compressor body includes a first sidewall, an upper cover, and a partition, the first sidewall being disposed between the upper cover and the partition, the first sidewall being welded to the partition; the air suction liquid reservoir comprises a second side wall and a lower cover, wherein the second side wall is arranged between the partition piece and the lower cover and welded with the partition piece, and a space is reserved between the upper end face of the second side wall and the lower end face of the first side wall.

7. The compressor of claim 1, wherein the pump body assembly is provided with an air suction port and an air injection port, the air suction reservoir is provided with a first air outlet communicated with the air suction port, and the air injection reservoir is provided with a second air outlet communicated with the air injection port.

8. The compressor of claim 7, wherein the pump body assembly includes an upper bearing, a lower bearing, and at least one cylinder disposed between the upper bearing and the lower bearing; the air suction port is arranged on the outer wall of the air cylinder, and the air jet port is arranged on the outer wall of at least one of the upper bearing, the lower bearing and the air cylinder.

9. The compressor of claim 8, wherein the pump body assembly further comprises a baffle plate and two cylinders, the baffle plate is arranged between the two cylinders, the baffle plate is provided with a vent port, the vent port is communicated with the two cylinders, the outer wall of the baffle plate is provided with the air jet port, and the air jet port is communicated with the vent port.

10. The compressor of claim 9, wherein the pump body assembly further comprises a gas injection on-off valve disposed at the gas injection port or the vent port for conducting or blocking the gas injection reservoir from the cylinder.

11. The compressor of claim 7, wherein said compressor includes at least one of said jet reservoirs, said pump body assembly being provided with at least one of said jet ports, said number of jet ports being no less than said number of jet reservoirs.

12. The compressor of claim 7, further comprising a connecting tube having one end communicating with the suction port and the other end penetrating the suction reservoir through the second air outlet port to communicate the suction reservoir with the pump body assembly.

13. The compressor of claim 12, wherein the connection tube is provided with an oil return hole, the oil return hole being provided in the suction accumulator.

14. The compressor of claim 13, wherein the oil return hole is provided at a side of the connection pipe near the bottom of the suction accumulator.

15. A refrigeration device comprising a compressor as claimed in any one of claims 1 to 14.