WO2024255524A1 - Compressor and refrigeration apparatus - Google Patents

Abstract

Disclosed in the present application are a compressor and a refrigeration apparatus. The compressor comprises a compressor main body and an air-spray reservoir, wherein the compressor main body is provided with an air-spray opening, and the air-spray reservoir is mounted outside the compressor main body; the air-spray reservoir comprises an inner insertion pipe and a tank, two ends of the inner insertion pipe being respectively connected to the air-spray opening and the tank; and the outer diameter of the compressor main body is D1, and the minimum distance between the axis of the tank and the axis of the compressor main body is D2, where 0.05≤(2D2-D1)/D1≤0.22.

Description

Compressors and refrigeration equipment

This application claims priority to Chinese patent application No. 202310724725.4 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 compressors, and in particular to a compressor and a refrigeration device.

Background Art

Usually, the jet reservoir is installed on the side of the main shell of the compressor body by hanging. This fixing method makes it easy for the jet reservoir and the shell to be very close, and the vibration generated during the movement of the compressor body will drive the jet reservoir to vibrate together, thereby increasing the vibration amplitude of the jet reservoir and the noise generated by the compressor.

Technical issues

The main purpose of the present application is to provide a compressor, which aims to reduce the vibration amplitude of the jet reservoir and reduce the noise generated by the compressor.

Technical Solutions

To achieve the above-mentioned purpose, the compressor proposed in this application includes:

A compressor body, wherein the compressor body is provided with an air injection port; and

A jet liquid reservoir is installed on the compressor body, and the jet liquid reservoir includes an inner tube and a tank body, both ends of the inner tube are respectively connected to the jet port and the tank body, the outer diameter of the compressor body is D1, and the shortest distance between the axis of the tank body and the axis of the compressor body is D2, 0.05≤(2D2-D1)/D1≤0.22.

In one embodiment, the compressor body includes a shell and a mounting bracket, the tank body is mounted on the compressor body through the mounting bracket, and a distance H between the mounting bracket and an upper end surface of the shell is 20mm≤H≤50mm.

In one embodiment, the compressor body includes a shell, rollers, a cylinder, a crankshaft and a motor. The cylinder and the motor are both installed in the shell. The output shaft of the motor is drivingly connected to the crankshaft. The rollers are fixed to the outer wall surface of the crankshaft. The motor drives the crankshaft and the rollers to rotate to compress the refrigerant in the cylinder.

In one embodiment, the offset direction of the jet reservoir is the moving direction of the roller.

In one embodiment, the inner insert tube includes a first straight pipe section and a connecting section, the first straight pipe section is connected to the jet port, the two ends of the connecting section are respectively connected to the tank body and the first straight pipe section, the axis of the first straight pipe section and the axis of the compressor body form a first plane, the axis of the compressor body and the axis of the tank body form a second plane, and the first plane and the second plane are arranged to intersect.

In one embodiment, the angle between the first plane and the second plane is α, 0°＜α≤70°.

In one embodiment, the connecting section includes a first curved pipe section, a second straight pipe section and a second curved pipe section, the two ends of the first curved pipe section are respectively connected to the first straight pipe section and the second straight pipe section, and the two ends of the second curved pipe section are respectively connected to the second curved pipe section and the tank body.

In one embodiment, an angle between an axial direction of the second straight pipe section and a horizontal plane direction of the compressor body is β, wherein 0°＜β≤60°.

In one embodiment, the compressor is a jet enthalpy increase compressor.

The present application also provides a refrigeration device, comprising the compressor as described above.

Beneficial Effects

This application

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art 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 an embodiment of a compressor of the present application;

FIG2 is a top view of FIG1 ;

FIG3 is a schematic diagram of the structure of the jet liquid reservoir in an embodiment of the compressor of the present application.

Description of Figure Numbers:

Label name Label name 10 case 213 First elbow section 11 First plane 214 The second elbow section 12 Second plane twenty two Tank 20 Jet reservoir twenty three Mounting Bracket 211 First straight pipe section 30 Air intake reservoir 212 The second straight pipe section    

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 all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) 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 this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

In addition, the descriptions of "first", "second", etc. in this application are only 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 defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, "and/or" in the full text includes three solutions. Taking A and/or B as an example, it includes technical solution A, technical solution B, and technical solution 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 deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

1 and 2 , the present application provides a compressor, comprising:

A compressor body, wherein the compressor body is provided with an air injection port; and

The jet reservoir 20 is installed on the outside of the compressor body. The jet reservoir 20 includes an inner tube and a tank body 22. Both ends of the inner tube are respectively connected to the jet port and the tank body 22. The outer diameter of the compressor body is D1, and the shortest distance between the axis of the tank body 22 and the axis of the compressor body is D2, 0.05≤(2D2-D1)/D1≤0.22.

The compressor in the technical solution of the present application includes a compressor body and a jet reservoir 20, the compressor body is provided with a jet port, the jet reservoir 20 is installed on the outside of the compressor body, the jet reservoir 20 includes an inner tube and a tank body 22, the two ends of the inner tube are respectively connected to the jet port and the tank body 22, the outer diameter of the compressor body is D1, the shortest distance between the axis of the tank body 22 and the axis of the compressor body is D2, 0.05≤(2D2-D1)/D1≤0.22; if (2D2-D1)/D1≤0.05, it means that the tank body 22 is close to the outer wall of the compressor body, and when the compressor body vibrates, the compressor body will vibrate with the tank body. 22 collides, thereby increasing the vibration of the jet reservoir 20. If (2D2-D1)/D1≥0.22, it means that the tank body 22 is far away from the axis of the compressor body, which makes the centrifugal force of the tank body 22 larger, making the tank body 22 prone to vibration; therefore, 0.05≤(2D2-D1)/D1≤0.22, so that the distance between the tank body 22 and the compressor body is controlled within a reasonable range, thereby reducing the probability of contact between the tank body 22 and the compressor body, and reducing the vibration transmission caused by the movement of the compressor body, thereby reducing the vibration amplitude of the tank body 22, reducing the noise generated by the compressor, and thus improving the service life of the equipment and the user experience.

In this embodiment, the compressor body includes a shell 10 and a mounting bracket 23. The tank body 22 is mounted on the compressor body through the mounting bracket 23. The distance H between the mounting bracket 23 and the upper end surface of the shell 10 is 20mm≤H≤50mm. On the basis of the first straight pipe section 211 being installed on the jet port, an additional mounting bracket 23 is provided to further increase the mounting strength of the tank body 22, so that the jet reservoir 20 can be more stably mounted on the compressor body.

In this embodiment, the tank body 22 is cylindrical and has a long length. On the one hand, such a configuration makes the diameter of the tank body 22 smaller, which is convenient for installation and fixation; on the other hand, if the diameter of the tank body 22 is smaller, the radial dimension of the compressor is reduced, which is conducive to the miniaturization of the compressor; at the same time, the center of gravity of the compressor body is shifted toward the direction close to the axis of the compressor body, thereby improving the stability of the compressor.

It can be understood that if H≤20mm, the mounting bracket 23 is too close to the upper end of the jet reservoir 20, so that the middle part of the jet reservoir 20 is susceptible to vibration, and when H≥50mm, the mounting bracket 23 is too close to the lower end of the jet reservoir 20, so that the upper end of the jet reservoir 20 is susceptible to the vibration of the compressor body. Therefore, by keeping the range of 20mm≤H≤50mm within a reasonable range, the stability of the tank body 22 is increased, the vibration amplitude of the tank body 22 is reduced, and then the vibration amplitude and noise of the tank body 22 are reduced, thereby improving the stability and service life of the compressor and improving the user experience.

Of course, one or more mounting brackets 23 can be provided. The multiple mounting brackets 23 can not only be used to install and fix the tank body 22 , but also can be used to install and fix the first straight pipe section 211 and/or the second straight pipe section 212 .

In one embodiment, the mounting bracket 23 is fixed to the housing 10 by screws, which have low processing requirements, simple structure, convenient assembly and disassembly, and low price. Of course, in other embodiments, the mounting bracket 23 can also be fixed to the housing 10 by welding.

Generally, the compressor body includes a shell 10, rollers, a cylinder, a crankshaft and a motor. The cylinder and the motor are both installed in the shell 10. The output shaft of the motor is drivingly connected to the crankshaft. The rollers are fixed to the outer wall of the crankshaft. The motor drives the crankshaft and the rollers to rotate to compress the refrigerant in the cylinder.

Specifically, the bearing includes an upper bearing and a lower bearing, and the upper bearing and the lower bearing are respectively installed at the upper and lower ends of the cylinder, and the jet port is provided on at least one of the upper bearing, the lower bearing and the cylinder, so that the jet reservoir 20 is connected with the compression chamber, wherein the crankshaft includes a main shaft portion, an eccentric portion and a secondary shaft portion, the main shaft portion is sealed and fixedly connected to the inner ring of the upper bearing, the secondary shaft portion is sealed and fixedly connected to the inner ring of the lower bearing, the eccentric portion is fixedly connected to the roller, the eccentric portion drives the roller to rotate eccentrically, the outer diameter of the roller contacts the inner diameter of the cylinder, and the refrigerant in the low-pressure chamber is compressed into high pressure through volume changes.

In this embodiment, the offset direction of the jet reservoir 20 is the movement direction of the roller. In this way, the anti-rotation ability of the jet reservoir 20 is enhanced, thereby reducing the vibration amplitude of the jet reservoir 20, thereby reducing the noise generated by the jet reservoir 20, improving the user experience, and also increasing the service life of the jet reservoir 20.

Furthermore, the compressor body also includes a vane, and a vane groove is provided on the upper bearing or the lower bearing. The vane is elastically connected to the vane groove through a spring, and the vane groove abuts against the outer diameter of the roller. When the crankshaft rotates eccentrically, one end of the vane will abut against the outer circumferential surface of the roller, and the vane will move back and forth under the action of the spring, thereby separating the high-pressure chamber and the low-pressure chamber to prevent refrigerant leakage in the high and low-pressure chambers.

It should be noted that only one cylinder can be provided, of course, multiple cylinders can be provided. When multiple cylinders are provided, the multiple cylinders can be arranged side by side, and one cylinder corresponds to a motor. In this way, the multiple cylinders can be compressed separately, and the capacity of the multiple cylinders can be set by themselves and does not need to be the same. At the same time, the exhaust ports of the multiple cylinders can be converged together, or they can be connected to the condenser separately.

Of course, in another embodiment, multiple cylinders are stacked up and down, so that one crankshaft can pass through multiple cylinders at the same time, and then one motor can drive multiple cylinders to perform compression processing at the same time. It should be noted that the capacity of the multiple cylinders at this time does not need to be the same, and can be set according to needs. Therefore, through the technical solution of one crankshaft passing through multiple cylinders at the same time, the internal structure of the compressor is reduced, the number of parts is reduced, and the production cost of the compressor is reduced.

Furthermore, the compressor body also includes a partition. When there are multiple cylinders, two adjacent cylinders are separated by a partition. By setting the partition, the relative side walls between the two adjacent cylinders are eliminated and replaced by the partition, thereby reducing the gap between the cylinders and reducing the size of the compressor. At the same time, when multiple cylinders are stacked up and down, the upper bearings and lower bearings relative to two adjacent cylinders can be replaced by the partition, thereby reducing the number of compressor parts and components, thereby reducing the size of the compressor, which is conducive to the miniaturization of the compressor, and also reduces the installation volume and production costs.

1, 2 and 3, in this embodiment, the jet reservoir 20 includes an inner tube and a tank body 22, the inner tube includes a first straight tube section 211 and a connecting section, the first straight tube section 211 is connected to the jet port, and the two ends of the connecting section are respectively connected to the tank body 22 and the first straight tube section 211, so that the refrigerant in the jet reservoir 20 can smoothly pass through the connecting section, the first straight tube section 211 and the jet port into the compressor body for compression processing; further, the axis of the first straight tube section 211 is aligned with the The axis of the compressor body forms a first plane 11, and the axis of the compressor body and the axis of the tank body 22 form a second plane 12. The first plane 11 and the second plane 12 are arranged to intersect, so that the first straight pipe section 211 is not coplanar with the tank body 22, thereby increasing the constraint of the first straight pipe section 211 on the jet reservoir 20, thereby increasing the ability of the jet reservoir 20 to resist rotational vibration, thereby reducing the vibration amplitude and noise of the jet reservoir 20, thereby improving the stability and service life of the compressor, and thereby improving the user experience.

Specifically, the angle between the first plane 11 and the second plane 12 is α, 0°＜α≤70°, which further increases the constraint of the first straight pipe section 211 on the jet reservoir 20, thereby further increasing the ability of the jet reservoir 20 to resist rotational vibration, thereby reducing the vibration amplitude and noise of the jet reservoir 20, thereby improving the stability and service life of the compressor, and thereby improving the user experience.

Furthermore, the connecting section includes a first curved pipe section 213, a second straight pipe section 212 and a second curved pipe section 214, the two ends of the first curved pipe section 213 are respectively connected to the first straight pipe section 211 and the second straight pipe section 212, the two ends of the second curved pipe section 214 are respectively connected to the second curved pipe section 214 and the tank body 22, and the installation direction of the tank body 22 is changed by the first curved pipe section 213 and the second curved pipe section 214, so that the tank body 22 is not coplanar with the first straight pipe section 211, thereby increasing the ability of the jet liquid reservoir 20 to resist rotational vibration, thereby reducing the vibration amplitude and noise of the jet liquid reservoir 20, thereby improving the stability and service life of the compressor, and thereby improving the user experience.

In one embodiment, the angle between the axial direction of the second straight pipe section 212 and the horizontal plane direction of the compressor body is β, wherein 0°＜β≤60°, so that the second straight pipe section 212 is inclined to the horizontal plane, and the second straight pipe section 212 and the first straight pipe section 211 are also inclined, thereby increasing the anti-rotation ability between the tank body 22 and the second straight pipe section 212, and between the second straight pipe section 212 and the first straight pipe section 211, thereby reducing the amplitude of the vibration of the jet reservoir 20 during the compression operation of the compressor, thereby reducing the noise generated when the compressor vibrates, thereby improving the service life of the equipment and the user experience.

In the present embodiment, the compressor is a jet reheat compressor, and the medium-pressure refrigerant gas in the jet reservoir 20 will flow out of the jet reservoir 20 from the suction port and the jet port and enter the compression chamber as needed; it should be noted that the pressure of the "medium-pressure refrigerant gas" here is a relative concept, which means that the pressure of the refrigerant in the jet reservoir 20 is higher than the pressure of the refrigerant entering the compression chamber from the evaporator, and lower than the pressure at the exhaust port of the compression chamber.

Furthermore, the compressor also includes an air suction accumulator 30, which is an important part of the compressor and can play the role of storage, gas-liquid separation, filtration, silencing and refrigerant buffering. It includes a cylinder, an air inlet pipe, an air outlet pipe, a filter screen and other parts.

At the same time, the suction accumulator 30 is installed between the evaporator and the compressor suction pipe. It is a protective component that prevents liquid refrigerant from flowing into the compressor and causing liquid hammer. During the operation of the air-conditioning system, it cannot be guaranteed that the refrigerant can be completely vaporized, that is, some liquid refrigerant coming out of the evaporator will enter the suction accumulator 30. Since the unvaporized liquid refrigerant is heavier than the gas, it will directly fall to the bottom of the suction accumulator 30. The vaporized refrigerant enters the compressor from the outlet of the suction accumulator 30, thereby preventing the compressor from sucking in liquid refrigerant and causing liquid hammer.

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 increase system is divided into two paths: 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 undergoes heat exchange with the higher temperature refrigerant liquid from the main circuit in the economizer. The refrigerant liquid in the auxiliary circuit absorbs heat and becomes gas, which is replenished into the compression chamber 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 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.

Furthermore, the suction liquid reservoir 30 is integrated with the axial direction of the compressor body, thereby greatly shortening the radial dimension of the compressor, making the structure between the compressors more compact, thereby reducing the vibration amplitude of the integrated compressor, thereby reducing noise, and is also conducive to the miniaturization of the compressor.

In one embodiment, the housing 10 of the suction liquid reservoir 30 is integrally arranged with the housing 10 of the compressor body, and the two are integrated so that when either one vibrates, the other one will be driven together, thereby reducing the vibration amplitude and reducing the noise. At the same time, it is beneficial to the miniaturization of the compressor and reduces the installation area of the compressor, which is beneficial to the development of miniaturization of air conditioners. At the same time, through the integrated arrangement, only the exposed outer shell needs to be rust-proofed, which reduces the area requiring rust-proofing and reduces the production cost related to the rust-proofing operation.

In another embodiment, the suction liquid accumulator 30 may also be separately provided and stacked above or below the compressor body, or fixed above or below the compressor body.

In this embodiment, the volume of the jet accumulator 20 is less than or equal to the volume of the suction accumulator 30. The refrigerant in the refrigeration circuit is stored in the suction accumulator 30, and the refrigerant compressed in the compression chamber is mainly supplied by the suction accumulator 30; the refrigerant in the air supply circuit is stored in the jet accumulator 20, which plays an auxiliary role. Therefore, the volume of the jet accumulator 20 is less than or equal to the volume of the suction accumulator 30.

The present application also proposes a refrigeration device, which can be divided into compression refrigeration equipment, absorption refrigeration equipment, steam jet refrigeration equipment, heat pump refrigeration equipment and electric refrigeration device. The refrigeration device is mainly composed of a compressor, an expansion valve, an evaporator, a condenser and accessories, and pipelines. Such as refrigerators, air conditioners, etc., the refrigeration device includes the compressor as described above, and the specific structure of the compressor refers to the above embodiment. Since the refrigeration device in this application adopts all the technical solutions of all the above embodiments, it at least has 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 transformations made by using the contents of the present application specification and drawings under the inventive concept of the present application, or directly/indirectly applied in other related technical fields are included in the patent protection scope of the present application.

Claims (10)

A compressor, wherein the compressor comprises: A compressor body, wherein the compressor body is provided with an air injection port; and The jet liquid reservoir is installed on the outside of the compressor body, and the jet liquid reservoir includes an inner tube and a tank body. The two ends of the inner tube are respectively connected to the jet port and the tank body. The outer diameter of the compressor body is D1, and the shortest distance between the axis of the tank body and the axis of the compressor body is D2, 0.05≤(2D2-D1)/D1≤0.22. The compressor according to claim 1, wherein the compressor body comprises a shell and a mounting bracket, the tank body is mounted on the compressor body through the mounting bracket, and a distance H between the mounting bracket and an upper end surface of the shell is 20 mm ≤ H ≤ 50 mm. The compressor as claimed in claim 1, wherein the compressor body includes a shell, a roller, a cylinder, a crankshaft and a motor, the cylinder and the motor are both installed in the shell, the output shaft of the motor is drivingly connected to the crankshaft, the roller is fixed to the outer wall surface of the crankshaft, and the motor drives the crankshaft and the roller to rotate to compress the refrigerant in the cylinder. The compressor of claim 3, wherein the offset direction of the jet accumulator is the moving direction of the roller. The compressor according to any one of claims 1 to 4, wherein the inner tube includes a first straight pipe section and a connecting section, the first straight pipe section is connected to the jet port, two ends of the connecting section are respectively connected to the tank body and the first straight pipe section, the axis of the first straight pipe section and the axis of the compressor body form a first plane, the axis of the compressor body and the axis of the tank body form a second plane, and the first plane and the second plane are arranged to intersect. The compressor according to claim 5, wherein the angle between the first plane and the second plane is α, 0°＜α≤70°. The compressor according to claim 5 or 6, wherein the connecting section comprises a first curved pipe section, a second straight pipe section and a second curved pipe section, two ends of the first curved pipe section are respectively connected to the first straight pipe section and the second straight pipe section, and two ends of the second curved pipe section are respectively connected to the second curved pipe section and the tank body. The compressor according to claim 7, wherein the angle between the axial direction of the second straight pipe section and the horizontal plane direction of the compressor body is β, wherein 0°＜β≤60°. The compressor according to any one of claims 1 to 8, wherein the compressor is a jet enthalpy increase compressor. A refrigeration device, wherein the refrigeration device comprises the compressor according to any one of claims 1 to 9.