CN113982883A

CN113982883A - Compressor and refrigeration equipment

Info

Publication number: CN113982883A
Application number: CN202111365211.1A
Authority: CN
Inventors: 张肃; 叶容君; 陈晓育
Original assignee: Guangdong Meizhi Compressor Co Ltd; Guangdong Meizhi Precision Manufacturing Co Ltd
Current assignee: Guangdong Meizhi Compressor Co Ltd; Guangdong Meizhi Precision Manufacturing Co Ltd
Priority date: 2021-11-17
Filing date: 2021-11-17
Publication date: 2022-01-28

Abstract

The invention discloses a compressor and refrigeration equipment, wherein the compressor comprises a compressor shell, a support frame, damping particles and a cover plate, and an accommodating cavity is formed in the compressor shell; the supporting frame is positioned in the accommodating cavity, the supporting frame is fixedly connected with the compressor shell, the supporting frame is provided with a central hole and a cavity, and the cavity and the central hole are arranged at intervals; damping particles are contained in the cavity; the cover plate is fixedly connected with the support frame to seal the cavity. The vibration of the compressor shell can be transmitted to the damping particles, and the damping particles and the wall surfaces of the cavities are collided and rubbed with each other, so that the vibration energy of the compressor shell is consumed, the high-frequency vibration of the compressor shell can be effectively reduced, and the vibration noise of the compressor is improved.

Description

Compressor and refrigeration equipment

Technical Field

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

Background

In the related art, the electromagnetic noise of the compressor is mainly caused by the current harmonic excitation of the motor. When the compressor runs, the overall vibration amplitude of the compressor is further aggravated by the modal resonance of the shell of the compressor, and the hearing of the compressor is seriously influenced.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a compressor, which can effectively reduce the high-frequency vibration of a compressor shell and improve the vibration noise of the compressor.

The invention also provides refrigeration equipment with the compressor.

According to an embodiment of the first aspect of the present invention, a compressor includes: the compressor comprises a compressor shell, a compressor shell and a compressor shell, wherein an accommodating cavity is formed inside the compressor shell; the supporting frame is positioned in the accommodating cavity, the supporting frame is fixedly connected with the compressor shell, the supporting frame is provided with a central hole and a cavity, and the cavity and the central hole are arranged at intervals; damping particles contained within the cavity; the cover plate is fixedly connected with the support frame to seal the cavity.

The compressor provided by the embodiment of the invention has at least the following beneficial effects:

the supporting frame is fixedly connected to the inside of the compressor shell, the supporting frame is provided with a cavity and sealed through a cover plate, damping particles are filled in the cavity, vibration of the compressor shell can be transmitted to the damping particles, and the damping particles and the wall surfaces of the cavity collide and rub with each other, so that vibration energy of the compressor shell is consumed, high-frequency vibration of the compressor shell can be effectively reduced, and vibration noise of the compressor is improved; the support frame is provided with the center hole, so that the compressed refrigerant can smoothly pass through the support frame, the exhaust smoothness of the compressor is guaranteed, and the damping particles in the cavity can reduce vibration generated when the refrigerant is exhausted.

According to some embodiments of the invention, the cavity is annular in cross-section, the cavity being circumferentially disposed about an outer periphery of the central bore.

According to some embodiments of the invention, the cavity is provided in a plurality, the plurality of cavities are arranged at intervals along the radial direction of the central hole, and the cavities are filled with the damping particles.

According to some embodiments of the invention, the cavity is provided in plurality, the cavities are arranged at intervals along the circumferential direction of the support frame, and the cavities are filled with the damping particles.

According to some embodiments of the invention, the volume of the cavity is V, the density of the damping particles is ρ, the mass of the support frame is M, and: rho V/M is more than or equal to 0.05 and less than or equal to 0.15.

According to some embodiments of the invention, the total volume of the damping particles in the cavity is V1, and the volume of the cavity is V, satisfying: V1/V is more than or equal to 0.7 and less than or equal to 0.9.

According to some embodiments of the invention, the cross-sectional area of the cavity is S, the damping particles have a diameter d, and: 15 is less than or equal to 4S/pi d ^2 is less than or equal to 30.

According to some embodiments of the invention, the compressor further comprises a motor assembly located in the accommodating cavity, the motor assembly is fixedly connected with the compressor shell, and the supporting frame is located above the motor assembly.

According to some embodiments of the invention, the opening of the cavity is formed in an end surface of the support frame axially remote from the end of the motor assembly.

The refrigeration equipment according to the second aspect of the embodiment of the invention comprises the compressor described in the above embodiment.

The refrigeration equipment provided by the embodiment of the invention has at least the following beneficial effects:

adopt the compressor of the first aspect embodiment, the compressor is through setting up fixed connection in the inside support frame of compressor housing, the support frame is equipped with the cavity and seals through the apron, pack the damping granule in the cavity, the vibration of compressor housing can transmit to the damping granule, between the damping granule, collision and friction each other between the wall of damping granule and cavity, thereby consume the vibration energy of compressor housing, can effectively reduce the high-frequency vibration of compressor housing, improve the vibration noise of compressor, refrigeration plant's silence performance has been improved. And the support frame is provided with the center hole, so that the compressed refrigerant can smoothly pass through the support frame, the exhaust smoothness of the compressor is ensured, and the damping particles in the cavity can reduce the vibration generated when the refrigerant is exhausted.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The invention is further described with reference to the following figures and examples, in which:

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

FIG. 2 is a schematic view, partly in section, of a compressor according to an embodiment of the invention;

FIG. 3 is an assembled cross-sectional view of the support bracket and cover plate of FIG. 2;

FIG. 4 is an assembled perspective view of the support bracket and cover plate of FIG. 2;

FIG. 5 is an exploded view of an angle of FIG. 4;

FIG. 6 is an exploded view from another angle as shown in FIG. 4;

FIG. 7 is a top view of a support bracket in a compressor according to another embodiment of the present invention;

FIG. 8 is a top view of a support bracket in a compressor according to another embodiment of the present invention;

FIG. 9 is a graph of the ratio of the mass of damping particles to the support frame to the vibration damping ratio of the compressor and to the cost increase for a compressor in accordance with an embodiment of the present invention;

FIG. 10 is a graph of the packing fraction of dampening particles in a compressor versus the vibration attenuation ratio of the compressor in accordance with one embodiment of the present invention;

fig. 11 is a graph illustrating a relationship between a ratio of a sectional area of a cavity to a sectional area of damping particles in a compressor and a vibration damping ratio of the compressor according to an embodiment of the present invention.

Reference numerals:

a compressor housing 100; a housing chamber 110;

a motor assembly 200; a rotor 210; a stator 220;

a pump body assembly 300; a cylinder 310; a compression chamber 311; a main bearing 320; a secondary bearing 330; a crankshaft 340; a piston 350;

a reservoir 400;

a damping assembly 500; a support frame 510; a cavity 511; a central aperture 512; a cover plate 520; a limit table 521; the damping particles 530.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to, for example, the upper, lower, etc., is indicated based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, a plurality means two or more. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

Referring to fig. 1, a compressor according to an embodiment of the present invention is used in a refrigeration system or a heat pump system, such as an air conditioner, a refrigerator, an air-powered water heater, and the like. For example, in a refrigeration system cycle of an air conditioner, a compressor is used as a power component of refrigerant cycle, the compressor compresses low-temperature and low-pressure gaseous refrigerant to form high-temperature and high-pressure gaseous refrigerant, the high-temperature and high-pressure gaseous refrigerant passes through a condenser to release heat, a throttling device to reduce pressure, an evaporator to absorb heat, and then the high-temperature and low-pressure gaseous refrigerant enters the compressor again to perform the next refrigerant cycle.

Referring to fig. 1 and 2, a compressor according to an embodiment of the present invention includes a compressor housing 100, a motor assembly 200, a pump body assembly 300, and an accumulator 400. The motor assembly 200 and the pump body assembly 300 are located in the receiving cavity 110 inside the compressor housing 100. It is understood that the motor assembly 200 includes a rotor 210 and a stator 220, and the stator 220 and the pump body assembly 300 are fixed to the inner wall of the compressor housing 100. The pump body assembly 300 includes a cylinder 310, a main bearing 320, a sub bearing 330, and a crankshaft 340. The cylinder 310 is formed with a compression chamber 311, and the main bearing 320 and the sub bearing 330 are respectively coupled to both ends of the cylinder 310 in the axial direction, thereby covering both ends of the compression chamber 311 in the axial direction. The liquid reservoir 400 provides gaseous refrigerant for the pump body assembly 300, the rotor 210 is connected with the crankshaft 340, so that the crankshaft 340 is driven to rotate by the motor assembly 200, the crankshaft 340 stably rotates under the supporting action of the main bearing 320 and the auxiliary bearing 330, the piston 350 is sleeved outside the crankshaft 340, the piston 350 is arranged in the cylinder 310 and eccentrically rotates relative to the center of the cylinder 310, so that the compression cavity 311 generates periodic change, the pump body assembly 300 completes the processes of air suction, compression and exhaust, and the compressed gaseous refrigerant enters the refrigeration system to circulate through the exhaust pipe.

Referring to fig. 1, the compressor according to the embodiment of the present invention further includes a support bracket 510 and a cover plate 520. The supporting frame 510 and the cover plate 520 are both located in the accommodating cavity 110, the supporting frame 510 is connected with the inner wall of the compressor shell 100, and the supporting frame 510 can be stably connected with the compressor shell 100 by welding, screwing, riveting or shrink-fitting. The support bracket 510 is vibrated in synchronization with the compressor housing 100. The supporting frame 510 is recessed to form a cavity 511, the cavity 511 may have one or more cavities, and the cover plate 520 is used to close the opening of the cavity 511. It is understood that the cover plate 520 may be coupled to the support bracket 510 by welding, riveting, screwing, etc.

Referring to fig. 2 and 3, the compressor according to an embodiment of the present invention further includes damping particles 530, and the damping particles 530 are filled in the cavity 511. The supporting bracket 510, the cover plate 520, and the damping particles 530 constitute the vibration damping assembly 500. It is understood that, in order to obtain better vibration damping effect in a limited space, the damping particles 530 may be metal particles having a density greater than or equal to 2 x 10^3kg/m ^ 3. The vibration damping effect of the vibration damping assembly 500 increases as the density of the metal particles increases, and the greater the density of the metal particles, the greater the energy of collision and friction loss, thereby securing the vibration damping effect of the damping particles 530. It is understood that the damping particles 530 may also be non-metal particles, or a collection of metal particles and non-metal particles, and are not particularly limited herein.

The compressor of the embodiment of the invention is provided with the supporting frame 510 fixedly connected to the inside of the compressor shell 100, the supporting frame 510 is provided with the cavity 511 and sealed by the cover plate 520, the cavity 511 is filled with the damping particles 530, the vibration of the compressor shell 100 can be transmitted to the damping particles 530, and the damping particles 530 and the wall surfaces of the cavity 511 collide and rub with each other, so that the vibration energy of the compressor shell 100 is consumed, the high-frequency vibration of the compressor shell 100 can be effectively reduced, the vibration noise of the compressor is improved, and the mute performance of the compressor is improved.

Referring to fig. 3 and 4, it will be appreciated that the support 510 is provided with a central aperture 512, the central aperture 512 being spaced from the cavity 511 and not communicating with each other. The design can ensure that the compressed refrigerant can smoothly pass through the support frame 510, the air exhaust smoothness of the compressor is ensured, and the damping particles 530 in the cavity 511 can also reduce the vibration generated when the refrigerant is exhausted. The opening of the cavity 511 is disposed upward, thereby facilitating the filling of the damping particles 530 and the assembly of the cap plate 520.

Referring to fig. 5 and 6, it can be understood that the end of the cover plate 520 facing the opening of the cavity 511 is provided with a limiting table 521, and the cover plate 520 can be positioned by the positioning connection of the limiting table 521 and the cavity 511, so that the assembly efficiency of the cover plate 520 is improved.

Referring to fig. 5, in a support frame 510 according to an embodiment of the present invention, a cross-section of a cavity 511 is circular. The annular cavity 511 surrounds the periphery of the central hole 512, so that the space structure of the support frame 510 can be fully utilized to maximize the cavity 511, the filling amount of the damping particles 530 is increased, the high-frequency vibration of the compressor shell 100 is further reduced, the vibration noise of the compressor is improved, and the silencing performance of the compressor is improved.

Referring to fig. 7, in a support frame 510 according to another embodiment of the present invention, two cavities 511 are provided. The two cavities 511 are arranged at intervals along the radial direction of the central hole 512, and the damping particles 530 with different densities can be filled in the two cavities 511, so that noise in a wider area is eliminated, the high-frequency vibration silencing effect of the compressor shell 100 is improved, and the silencing performance of the compressor is improved. Of course, the two cavities 511 can be filled with the same density of the damping particles 530, and the two cavities 511 increase the contact area between the cavities 511 and the damping particles 530, which increases the collision and friction between the damping particles 530 and the wall surfaces of the cavities 511, thereby dissipating the vibration energy of the compressor housing 100. It is understood that the cavity 511 may be provided with three, four or more, and is not specifically limited herein.

Referring to fig. 8, in a support frame 510 according to another embodiment of the present invention, four cavities 511 are provided. The four cavities 511 are spaced apart along the circumference of the cage 510, i.e., the four cavities 511 are disposed around the central aperture 512. The four cavities 511 can be filled with damping particles 530 with different densities, so that noise in a wider area is eliminated, the noise elimination effect of high-frequency vibration of the compressor shell 100 is improved, and the silencing performance of the compressor is improved. It is understood that the cavity 511 may be provided with two, three, five or more, and is not specifically limited herein.

Referring to fig. 2, it can be understood that the modal resonance of the compressor is located in the upper space of the compressor housing 100, i.e., the upper space of the compressor housing 100 vibrates at a high frequency, and thus the vibration of the compressor housing 100 is improved better by disposing the vibration damping assembly 500 at the modal resonance point. The embodiment of the present invention fixes the support frame 510 to the inner wall of the compressor housing 100 above the motor assembly 200. It can be appreciated that the end surface of the support bracket 510 axially away from the end of the motor assembly 200 is provided with an opening of the cavity 511, thereby further improving the efficiency of filling the damping particles 530 and improving the convenience of installation of the cover plate 520.

It will be appreciated that the density of the damping particles 530 is defined as ρ and the mass of the support 510 is defined as M. The ratio of the mass of the damping particles 530 in the cavity 511 to the mass of the corresponding support 510 can be expressed by ρ V/M, and is set in the range of 0.05 to 0.15. Referring to fig. 9, fig. 9 is a graph illustrating a ratio of a mass of damping particles 530 to a mass of a supporter 510 in a compressor according to an embodiment of the present invention, as a function of a vibration damping ratio of the compressor and a cost increase. As can be seen from the figure, the cost increment curve is along a straight line where the mass fraction of the damping particles 530 increases gradually, and the vibration attenuation ratio curve is along a curve where the mass fraction of the damping particles 530 increases gradually, and the slope of the curve decreases gradually. Therefore, by balancing the vibration attenuation ratio and the cost increment, and setting ρ V/M in the range of 0.05 to 0.15, the compressor has a good vibration damping effect, and the space occupied by the cavity 511 of the support frame 510 and the cost of the damping particles 530 are relatively friendly and have high cost performance.

Referring to fig. 10, fig. 10 is a graph illustrating a filling rate of damping particles 530 in a compressor according to an embodiment of the present invention with respect to a vibration damping ratio of the compressor. It is understood that defining the total volume of the damping particles 530 in the cavity 511 as V1, and setting the ratio between the total volume V1 of the damping particles 530 in the cavity 511 and the volume V of the cavity 511 in the range of 0.7 to 0.9, can ensure the filling rate of the damping particles 530, so that the damping particles 530 have enough space for collision and friction, and the filling rate of the damping particles 530 cannot be too small, which would affect the damping effect. It can be shown from the figure that, in the case where the above-mentioned ratio is in the range of 0.7 to 0.9 under otherwise constant conditions, the vibration damping ratio of the compressor is relatively high and the stability of the compressor is higher. When the above ratio is less than 0.7, the vibration damping ratio of the compressor is reduced as the filling ratio is reduced. When the above ratio is greater than 0.9, the vibration damping ratio of the compressor is decreased as the filling rate is increased, and since the space of the cavity 511 is limited, the damping particles 530 do not have enough movement space, it is not guaranteed that the damping particles 530 can lose the energy of the vibration by friction or collision.

Referring to fig. 11, fig. 11 is a graph illustrating a relationship between a ratio of a sectional area of a cavity 511 to a sectional area of a damping particle 530 and a vibration damping ratio of a compressor according to an embodiment of the present invention. It is understood that the cross-sectional area of the cavity 511 is defined as S, the diameter of the damping particles 530 is defined as d, and the cross-sectional area of the damping particles 530 can be expressed by 1/4 π d ^ 2. It is understood that when the damping particles 530 have an irregular spherical structure, the diameter d of the damping particles 530 should be understood as the longest line among the line segments formed by connecting any two points on the outer surface of the damping particles 530. The ratio of the sectional area of the cavity 511 to the sectional area of the damping particles 530 is set in the range of 15 to 30, ensuring that the damping particles 530 can form a laminar flow state in the cavity 511, and the vibration damping effect of the support bracket 510 is optimized in this state. It can be shown from the figure that, in the case where the above-mentioned ratio is in the range of 15 to 30, the vibration damping ratio of the compressor is relatively high and the stability of the compressor is higher, all other conditions being unchanged. When the above ratio is less than 15, the vibration damping ratio of the compressor is reduced as the cross-sectional area of the damping particles 530 is reduced. When the above ratio is greater than 30, the vibration damping ratio of the compressor is reduced as the cross-sectional area of the damping particles 530 is increased.

The refrigeration equipment of the embodiment of the invention can be equipment for realizing refrigeration cycle through a compressor, such as a split air conditioner, a central air conditioner, a mobile air conditioner, a dehumidifier and the like. The refrigeration equipment of the embodiment of the invention adopts the compressor of the above embodiment, the compressor is fixedly connected to the support frame 510 in the compressor shell 100 through the arrangement, the support frame 510 is provided with the cavity 511 and is sealed through the cover plate 520, the damping particles 530 are filled in the cavity 511, the vibration of the compressor shell 100 can be transmitted to the damping particles 530, and the damping particles 530 and the wall surfaces of the cavity 511 collide and rub with each other, so that the vibration energy of the compressor shell 100 is consumed, the high-frequency vibration of the compressor shell 100 can be effectively reduced, the vibration noise of the compressor is improved, and the mute performance of the refrigeration equipment is improved. The support frame 510 is provided with a central hole 512 to ensure that the compressed refrigerant can smoothly pass through the support frame 510, so as to ensure the smooth exhaust of the compressor, and the damping particles 530 in the cavity 511 can reduce the vibration generated when the refrigerant is exhausted.

Since the refrigeration equipment adopts all technical solutions of the compressor of the above embodiment, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and no further description is given here.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims

1. A compressor, characterized by comprising:

the compressor comprises a compressor shell, a compressor shell and a compressor shell, wherein an accommodating cavity is formed inside the compressor shell;

the supporting frame is positioned in the accommodating cavity, the supporting frame is fixedly connected with the compressor shell, the supporting frame is provided with a central hole and a cavity, and the cavity and the central hole are arranged at intervals;

damping particles contained within the cavity;

the cover plate is fixedly connected with the support frame to seal the cavity.

2. The compressor of claim 1, wherein: the cross section of the cavity is annular, and the cavity is arranged on the periphery of the central hole in a surrounding mode.

3. The compressor of claim 2, wherein: the cavity is equipped with a plurality ofly, and is a plurality of the cavity is followed the radial interval of centre bore sets up, all fill in the cavity damping particle.

4. The compressor of claim 1, wherein: the cavity is equipped with a plurality ofly, and is a plurality of the cavity is followed the circumference interval of support frame sets up, all fill in the cavity damping particle.

5. The compressor of claim 1, wherein: the volume of the cavity is V, the density of the damping particles is rho, the mass of the support frame is M, and the following requirements are met: rho V/M is more than or equal to 0.05 and less than or equal to 0.15.

6. The compressor of claim 1, wherein: the total volume of the damping particles in the cavity is V1, the volume of the cavity is V, and the following conditions are met: V1/V is more than or equal to 0.7 and less than or equal to 0.9.

7. The compressor of claim 1, wherein: the cross-sectional area of the cavity is S, the diameter of the damping particles is d, and the following requirements are met: 15 is less than or equal to 4S/pi d ^2 is less than or equal to 30.

8. The compressor of claim 1, wherein: the compressor further comprises a motor assembly located in the accommodating cavity, the motor assembly is fixedly connected with the compressor shell, and the supporting frame is located above the motor assembly.

9. The compressor of claim 8, wherein: the opening of the cavity is formed in the end face of one end, far away from the motor assembly, of the support frame along the axial direction.

10. Refrigeration plant, its characterized in that: comprising a compressor according to any one of claims 1 to 9.