CN221033131U

CN221033131U - Compressor with a compressor body having a rotor with a rotor shaft

Info

Publication number: CN221033131U
Application number: CN202323017941.XU
Authority: CN
Inventors: 王晖
Original assignee: Guangdong Meizhi Compressor Co Ltd; Anhui Meizhi Precision Manufacturing Co Ltd
Current assignee: Guangdong Meizhi Compressor Co Ltd; Anhui Meizhi Precision Manufacturing Co Ltd
Priority date: 2023-11-06
Filing date: 2023-11-06
Publication date: 2024-05-28
Anticipated expiration: 2033-11-06

Abstract

The utility model discloses a compressor, which comprises a shell, a pump body, a transmission shaft, a driving assembly and a silencer. The shell is provided with a containing cavity; the pump body is accommodated in the accommodating cavity, the pump body is provided with a compression channel for compressing gas, the transmission shaft is in transmission connection with the pump body, and the driving assembly is accommodated in the accommodating cavity and is in transmission connection with the transmission shaft; the silencer is arranged at one end of the pump body, which is close to the driving assembly, and is provided with a silencing cavity communicated with the compression channel, an air outlet hole communicated with the silencing cavity and the storage cavity and an extension wall extending towards the driving assembly, wherein the air outlet hole is arranged on the extension wall. By adopting the technical scheme of the embodiment, the axial resonance and the movement radiation noise caused by the pulsation injection can be reduced, and the hearing is obviously improved. Secondly, this technical scheme can also reduce the air current to the atomization effect of lubricating oil in the drive assembly to reduce the oil extraction rate of compressor. In addition, compared with the prior art, the method has the advantages of easy implementation of the process required by mass production, good effect and higher cost performance.

Description

Compressor with a compressor body having a rotor with a rotor shaft

Technical Field

The utility model relates to the technical field of air conditioners, in particular to a compressor.

Background

The rotor compressor with the valve plate is not a stable continuous exhaust process due to the intermittent opening and closing of the valve plate, so that larger airflow pulsation is caused. And because the exhaust port of the rotor compressor is close to the motor rotor, the pulsating air flow directly impacts the rotor to radiate noise, and particularly, the discontinuous audible sensation of 'beep' sound is poor when the compressor runs at low frequency, and the user experience of products is seriously influenced.

Based on this, the improvement of the axial play of the rotor at present mainly comprises: increasing the rigidity of the rotor comprises blunting, thickening of a rotor end plate, adjustment of the height of a hot jacket, attenuation of exhaust speed of a double-layer silencer and the like. However, the method is difficult to comprehensively improve the noise problem caused by the axial movement of the rotor, the noise reduction income is low, the process manufacturing problem is generally increased, the actual production efficiency is easily affected, and the overall cost performance income is general. Based on the above, the noise problem caused by the axial movement of the rotor due to airflow pulsation is improved through the side-exhaust silencer, and the scheme is easy to implement and high in efficiency and overall cost performance.

Disclosure of utility model

The utility model mainly aims to provide a compressor and aims to solve the problem that airflow pulsation impacts a rotor to generate larger radiation noise.

In order to achieve the above object, the present utility model provides a compressor comprising:

the shell is provided with a containing cavity;

The pump body is accommodated in the accommodating cavity and provided with a compression channel for compressing gas;

the transmission shaft is in transmission connection with the pump body;

the driving assembly is accommodated in the accommodating cavity and is in transmission connection with the transmission shaft; and

The silencer is arranged at one end of the pump body, which is close to the driving assembly, and is provided with a silencing cavity communicated with the compression channel, an air outlet hole communicated with the silencing cavity and the containing cavity, and an extension wall extending towards the driving assembly, wherein the air outlet hole is arranged on the extension wall.

In one embodiment, the extension wall extends around the center of the drive shaft and encloses a ring.

In an embodiment, the extending wall is formed with a plurality of concave portions and a plurality of convex portions sequentially spaced apart, and the concave portions and the convex portions are all disposed around the center of the extending wall.

In an embodiment, the air outlet hole is formed on the convex portion.

In an embodiment, the muffler further includes a mounting portion located at one end of the extension wall near the pump body and a cover portion located at one end of the extension wall near the driving assembly, the mounting portion is fixedly connected with the pump body, and the cover portion and the extension wall enclose to form the silencing cavity.

In an embodiment, the cover portion is provided with a avoidance hole, and the transmission shaft passes through the avoidance hole to connect the pump body and the driving assembly.

In an embodiment, the driving assembly comprises a stator fixedly arranged and a rotor rotatably arranged in the stator, and the rotor is fixedly connected with the transmission shaft.

In one embodiment, the transmission shaft comprises a transmission part extending along the axial direction of the rotor and an eccentric part eccentrically arranged on the transmission part, and the eccentric part is in transmission connection with the pump body.

In an embodiment, the driving assembly further includes a first weight and a second weight, and the first weight and the second weight are respectively fixed at two sides of the rotor in the axial direction.

In an embodiment, the pump body further comprises a valve plate located on the compression channel, and the valve plate is used for controlling on-off of the compression channel.

By adopting the technical scheme of the embodiment, the air outlet holes are formed in the extending wall extending towards the driving assembly, so that the axial excitation of air flow to the driving assembly can be greatly reduced, the axial resonance and the movement radiation noise caused by pulsating injection are further reduced, and the hearing is remarkably improved. Secondly, this technical scheme can also reduce the air current to the atomization effect of lubricating oil in the drive assembly to reduce the oil extraction rate of compressor. In addition, compared with the schemes of blunting, thickening of a rotor end plate, adjustment of a hot jacket height, attenuation of exhaust speed of a double-layer silencer and the like in the prior art, the method has the advantages that the process required by mass production is easy to implement, the effect is good, and the cost performance is higher.

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 of a compressor according to an embodiment of the present utility model;

FIG. 2 is a cross-sectional view of the compressor of FIG. 1;

FIG. 3 is an exploded view of a portion of the compressor of FIG. 2;

fig. 4 is a schematic view of the muffler of fig. 3.

Reference numerals:

a 100-compressor;

110-a housing, 110 a-a receiving chamber, 110 b-an air inlet, 110 c-an air outlet;

120-pump body, 120 a-compression channel, 122-valve plate;

130-a drive assembly, 132-a stator, 134-a rotor, 136-a first counterweight, 138-a second counterweight;

140-muffler, 140 a-muffler chamber, 140 b-outlet port, 142-extension wall, 1422-recess, 1424-projection, 144-mounting portion, 146-cover portion, 146 a-relief port;

150-transmission shaft, 152-transmission part, 154-eccentric part.

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 all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

Furthermore, the description of "first," "second," etc. in this disclosure 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, 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.

Referring to fig. 1-4, a compressor 100 according to an embodiment of the present utility model includes a casing, a pump body 120, a transmission shaft 150, a driving assembly 130, and a muffler 140. The casing is provided with a containing cavity 110a; the pump body 120 is accommodated in the accommodating cavity 110a, the pump body 120 is provided with a compression channel 120a for compressing gas, the transmission shaft 150 is in transmission connection with the pump body 120, and the driving assembly 130 is accommodated in the accommodating cavity 110a and in transmission connection with the transmission shaft 150; muffler 140 is disposed at one end of pump body 120 near drive assembly 130, and muffler 140 has a muffler chamber 140a communicating with compression passage 120a, an air outlet 140b communicating muffler chamber 140a with receiving chamber 110a, and an extension wall 142 extending toward drive assembly 130, air outlet 140b being disposed on extension wall 142.

It is understood that the gas compressed by the compressor 100 in this embodiment may be, but is not limited to, a refrigerant. Further, the compressor 100 is configured to compress a low-temperature low-pressure refrigerant into a high-temperature high-pressure refrigerant.

In this embodiment, the refrigerant with low temperature and low pressure is input into the compression passage 120a of the pump body 120, the pump body 120 compresses the refrigerant to form a high temperature and high pressure air flow, the air flow is input into the muffler chamber 140a communicated with the compression passage 120a, and the air flow flows in the muffler chamber 140a and is discharged at the air outlet hole 140 b. Since the air outlet 140b is formed on the extension wall 142, and the extension wall 142 extends toward the driving assembly 130, the air flow direction of the refrigerant output from the air outlet 140b is deviated from the driving assembly 130. Therefore, the silencing chamber 140a can perform primary deceleration on the air flow flowing into the silencing chamber, and when the air flow is input into the accommodating chamber 110a, the inner wall of the casing acts on the air flow to perform secondary deceleration, and finally flows out from the gap of the driving assembly 130.

By adopting the technical scheme of the embodiment, the air outlet hole 140b is arranged on the extension wall 142 extending towards the driving assembly 130, so that the axial excitation of the air flow to the driving assembly 130 can be greatly reduced, the axial resonance and the movement radiation noise caused by the pulsating injection can be further reduced, and the hearing is remarkably improved. Second, this solution also reduces the atomization effect of the air flow on the lubricating oil in the drive assembly 130, thereby reducing the oil extraction rate of the compressor 100. In addition, compared with the schemes of blunting, thickening of the end plate of the rotor 134, hot jacket height adjustment, or attenuation of exhaust speed of the double-layer muffler 140 in the prior art, the method has the advantages of easy implementation of the process required by mass production, good effect and higher cost performance.

The problem of the current pulsation produces great radiation noise among the prior art is solved.

Of course, the casing of the present embodiment is provided with an air inlet 110b and an air outlet 110c.

As shown in fig. 1 and 2, in one embodiment, the intake port 110b communicates with the compression passage 120a and the exhaust port 110c is located on a side of the drive assembly 130 remote from the pump body 120.

In one possible embodiment, the inlet 110b communicates with a reservoir and the outlet 110c communicates with a condenser.

Referring to fig. 4, in one embodiment, the extension wall 142 extends around the center of the drive shaft 150 and encloses a ring.

By this arrangement, it is possible to form muffler chamber 140a having a relatively large volume, thereby improving the effect of reducing the speed and reducing the noise of the air flow.

With continued reference to fig. 4, in a specific embodiment, a plurality of concave portions 1422 and a plurality of convex portions 1424 are formed on the extension wall 142 at intervals, and the plurality of concave portions 1422 and the plurality of convex portions 1424 are all disposed around the center of the extension wall 142.

In this embodiment, the plurality of concave portions 1422 and the convex portions 1424 form the extending walls 142 with high and low relief, and each concave portion 1422 and each convex portion 1424 can be regarded as a reinforcing rib structure, so as to improve the structural strength and the service life of the muffler 140.

Optionally, the extension wall 142 is quincuncial.

In a more specific embodiment, the air outlet 140b is formed in the boss 1424.

It can be appreciated that the concave portions 1422 on both sides of the convex portion 1424 enable the convex portion 1424 to have a certain strength, and the air outlet holes 140b are disposed on the convex portion 1424, so that the strength of the periphery of the air outlet holes 140b can be improved, and the possibility of deformation damage of the air outlet holes 140b during long-term use can be reduced. Further, tab 1424 is located at the radial edge of sound deadening chamber 140a, facilitating the outflow of the refrigerant. In addition, the air outlet hole 140b is arranged at the position, so that the processing is convenient.

Alternatively, the number of the air outlet holes 140b is two or more.

With continued reference to fig. 4, in another embodiment, muffler 140 further includes a mounting portion 144 disposed at an end of extension wall 142 adjacent to pump body 120 and a sealing portion 146 disposed at an end of extension wall 142 adjacent to driving assembly 130, wherein mounting portion 144 is fixedly connected to pump body 120, and sealing portion 146 and extension wall 142 enclose muffler chamber 140a.

In this embodiment, the mounting portion 144 extends in a direction away from the center of the muffler 140, and a plurality of through holes are formed in the mounting portion 144, and the mounting portion 144 is fixedly connected to the pump body 120 by a stud passing through the through holes. By adopting the technical scheme of the embodiment, on one hand, the installation is convenient, and on the other hand, the installation part 144 can block the silencing cavity 140a to a certain extent, so that the refrigerant is discharged at the air outlet hole 140 b.

In a more specific embodiment, the cover portion 146 is provided with a relief hole 146a, and the transmission shaft 150 passes through the relief hole 146a to connect the pump body 120 and the driving assembly 130. In this embodiment, the cover 146 is mainly used to block the muffler 140a, so as to prevent the airflow from directly striking the driving assembly 130.

Further, a gap exists between the escape hole 146a and the driving shaft 150, so as to avoid the muffler 140 from affecting the rotation of the driving shaft 150.

Alternatively, the gap is 0.1mm-0.5mm.

In yet another embodiment, as shown in fig. 2, the driving assembly 130 includes a stator 132 fixedly disposed and a rotor 134 rotatably disposed within the stator 132, the rotor 134 being fixedly coupled to a transmission shaft 150. The inner rotor 134 scheme is adopted in the embodiment, the driving assembly 130 can directly drive the transmission shaft 150 to rotate, no additional transmission mechanism is needed, space waste is avoided, and the structural compactness of the compressor 100 is improved.

With continued reference to fig. 2 and 3, in one embodiment, the transmission shaft 150 includes a transmission portion 152 extending along an axial direction of the rotor 134 and an eccentric portion 154 eccentrically disposed on the transmission portion 152, and the eccentric portion 154 is in driving connection with the pump body 120.

The present embodiment adopts the technical scheme that the eccentric portion 154 compresses the refrigerant, has the characteristics of stability, high efficiency and low noise, and compared with other types, the system pressure loss is smaller, so that higher compression efficiency can be provided.

As shown in fig. 2, the driving assembly 130 further includes a first weight 136 and a second weight 138, and the first weight 136 and the second weight 138 are respectively fixed on two sides of the rotor 134 in the axial direction.

In this embodiment, the first balance weight 136 and the second balance weight 138 are used to balance the centrifugal force generated when the eccentric portion 154 rotates, so that the rotation of the rotor 134 is more stable.

Optionally, the first counterweight 136 and/or the second counterweight 138 are crescent shaped.

In another embodiment, as shown in fig. 3, the pump body 120 further includes a valve plate 122 disposed on the compression channel 120a, where the valve plate 122 is used to control the on-off of the compression channel 120 a.

Specifically, when the pump body 120 sucks air, the valve plate 122 seals the compression passage 120a; at the time of discharge, valve plate 122 communicates compression passage 120a with muffler chamber 140a so that the refrigerant enters muffler chamber 140a. Thus, the compressor 100 can be operated efficiently by sucking and discharging air at a certain rhythm.

It should be noted that, in combination with the position feature of the air outlet in the above embodiment, the valve plate 122 is prevented from being intermittently opened and closed to generate larger air flow pulsation so as to affect the driving assembly 130.

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

Claims

1. A compressor, comprising:

the shell is provided with a containing cavity;

the transmission shaft is in transmission connection with the pump body;

2. The compressor of claim 1, wherein the extension wall extends around a center of the drive shaft and encloses a synthetic ring.

3. The compressor of claim 2, wherein a plurality of concave portions and a plurality of convex portions are formed on the extension wall at intervals in order, and a plurality of concave portions and a plurality of convex portions are disposed around a center of the extension wall.

4. A compressor according to claim 3, wherein the gas outlet is provided in the boss.

5. The compressor of claim 2, wherein the muffler further comprises a mounting portion at an end of the extension wall adjacent the pump body and a cover portion at an end of the extension wall adjacent the drive assembly, the mounting portion being fixedly connected to the pump body, the cover portion and the extension wall enclosing to form the muffling chamber.

6. The compressor of claim 5, wherein the cover portion is provided with a relief hole, and the drive shaft passes through the relief hole to connect the pump body and the drive assembly.

7. The compressor of any one of claims 1 to 6, wherein the drive assembly includes a stator fixedly disposed and a rotor rotatably disposed within the stator, the rotor being fixedly coupled to the drive shaft.

8. The compressor of claim 7, wherein the drive shaft includes a drive portion extending in an axial direction of the rotor and an eccentric portion eccentrically provided on the drive portion, the eccentric portion being drivingly connected to the pump body.

9. The compressor of claim 8, wherein the drive assembly further comprises a first weight and a second weight, the first weight and the second weight being fixed to both sides of the rotor in an axial direction, respectively.

10. The compressor of any one of claims 1-6, wherein the pump body further comprises a valve plate positioned on the compression passage, the valve plate being configured to control the opening and closing of the compression passage.