WO2021184739A1

WO2021184739A1 - Muffler structure, compressor, and refrigerator

Info

Publication number: WO2021184739A1
Application number: PCT/CN2020/120613
Authority: WO
Inventors: 魏会军; 张率华; 黄传顺; 严耀宗; 熊克强; 申婷; 梁文斌
Original assignee: 珠海格力节能环保制冷技术研究中心有限公司
Priority date: 2020-03-16
Filing date: 2020-10-13
Publication date: 2021-09-23
Also published as: CN111472958A; CN111472958B

Abstract

A muffler structure and a compressor comprising a muffler, and a refrigerator. The muffler structure comprises: a housing (4) provided with a muffler cavity therein, an inlet (5) and an outlet (6) of the housing (4), the inlet (5) and the outlet (6) both being in communication with the muffler cavity; an oil return part provided in the muffler cavity; and a first separation part (41) located in the muffler cavity and separating the muffler cavity into a first cavity and a second cavity, the first separation part (41) being provided with a first through-hole (412) communicating the first cavity and the second cavity; the oil return part comprises an oil return groove (411); and the oil return groove (411) is located on a surface of a side of the first separation part (41) close to the inlet (5).

Description

Muffler structure, compressor and refrigerator

Cross-references to related applications

This application is based on the application with the CN application number 202010183205.3 and the filing date of March 16, 2020, and claims its priority. The disclosure of the CN application is hereby incorporated into this application as a whole.

Technical field

The present disclosure relates to a muffler structure, a compressor and a refrigerator.

Background technique

In the related art, the exhaust of a compressor used in a refrigerator is a high-temperature and high-pressure gas with a high-speed airflow. The compressor produces large vibration and noise when it is exhausted, which directly affects the overall performance of the compressor. Therefore, silencers for compressors came into being.

Summary of the invention

In one aspect of the present disclosure, there is provided a muffler structure, including: a housing with a muffler cavity therein, the housing having an inlet and an outlet, and both the inlet and the outlet are in communication with the muffler cavity; The oil part is arranged in the silencing chamber; the first partition part is located in the silencing chamber and divides the silencing chamber into a first chamber and a second chamber, and the first partition has a communicating space In the first circulation holes of the first chamber and the second chamber, the oil return portion includes an oil return groove, and the oil return groove is located on a surface of the first partition on a side close to the inlet.

In some embodiments, the muffler structure further includes: a second partition located in the muffler cavity, and divides the second chamber into two circulation cavities, the two circulation cavities are in the fluid flow They are arranged in order upwards, wherein the second partition has a second circulation hole communicating with the two circulation cavities.

In some embodiments, the oil return portion further includes: an oil return member corresponding to the position of the oil return groove and configured to guide the oil in the muffler cavity to flow out.

In some embodiments, the oil return member includes: an oil return hole opened on the housing; and a sealing portion configured to use the sealing portion to seal the oil return hole as a sealing position, and use the The sealing part opens the oil return hole as an oil return position, which is movable between the sealing position and the oil return position.

In some embodiments, the oil return member further includes: a sliding rod slidably disposed in the oil return hole, a first end of the sliding rod is connected to the sealing portion, and a second end is connected to the limiter. And a limiting portion, which is provided outside the housing, wherein the sealing portion is provided in the first chamber, and the limiting portion and the sealing portion are respectively in the cross section of the oil return hole All the orthographic projections are larger than the cross-sectional area of the oil return hole.

In some embodiments, the material density of the sealing part is p1, and p1=0.2～0.9g/cm ³ , the density of the sliding rod and the limiting part are both p2, and p2=0.2～0.9g /cm ³ .

In some embodiments, the sealing portion includes: a sealing area, located on the outer peripheral side of the stressed area, configured to be blocked in the oil return hole when in the sealing position, and to seal the oil return Hole; and the stressed area, connected with the sealing area, and with a gap between the inner surface of the housing, and configured to be connected with the inner surface of the housing through a concave-convex structure when in the sealed position.

In some embodiments, the stressed area has a protrusion; the inner surface of the housing has a groove corresponding to the protrusion, and the protrusion is configured to snap into the groove when in the sealing position Inside.

In some embodiments, the oil return groove is directly opposite to the inlet in the fluid flow direction, the first partition is inclined in a direction close to the inlet, and the second partition is inclined in a direction away from the inlet.

In some embodiments, the bottom of the casing is inclinedly arranged, an oil collecting area is formed between the first partition and the inner surface of the casing, and the oil return member is located in the oil collecting area.

In some embodiments, the muffler structure further includes: an outlet pipe, one end of which is connected to the outlet, wherein the length of the outlet pipe is 20-40 cm, and the outlet pipe is a curved pipe.

In some embodiments, the first circulation hole is located above the oil return groove, and the second circulation hole is located below the oil return groove.

In some embodiments, the first circulation hole has a constant cross-section or a variable cross-section.

According to another aspect of the present disclosure, there is provided a compressor including the above-mentioned muffler structure.

In some embodiments, the compressor further includes: a compressor housing having a first exhaust port; and a cylinder provided in the compressor housing and having a second exhaust port, wherein the muffler structure is provided In the compressor housing, the inlet of the casing of the muffler is in communication with the second exhaust port, and the outlet is in communication with the first exhaust port.

According to another aspect of the present disclosure, there is provided a refrigerator including the above-mentioned compressor.

Description of the drawings

The drawings constituting a part of the specification describe the embodiments of the present disclosure, and together with the specification, serve to explain the principle of the present disclosure.

With reference to the accompanying drawings, the present disclosure can be understood more clearly according to the following detailed description, in which:

FIG. 1 is a schematic structural diagram of some embodiments of the muffler structure of the present disclosure;

2 is a schematic diagram of the internal cross-sectional structure of some embodiments of the muffler structure of the present disclosure;

3 is a schematic diagram of the internal cross-sectional structure of other embodiments of the muffler structure of the present disclosure;

4 is a schematic diagram of the structure of the oil return member in some embodiments of the muffler structure of the present disclosure;

Fig. 5 is a schematic structural diagram of an oil return member in other embodiments of the muffler structure of the present disclosure;

Fig. 6 is a schematic structural diagram of some embodiments of the disclosed compressor.

It should be understood that the sizes of the various parts shown in the drawings are not drawn in accordance with the actual proportional relationship. In addition, the same or similar reference numerals indicate the same or similar components.

The reference signs are indicated as:

1. Compressor housing; 2. Exhaust port; 3. Cylinder; 4. Housing; 41. First partition; 411. Oil return groove; 412. First circulation hole; 42, second partition; 421. No. 2. Circulation holes; 5. Inlet; 6. Outlet; 7. Outlet; 8. Oil return part; 81. Sealing part; 811. Sealing area; 812. Forced area; 82. Limiting part; 83. Sliding rod; 84. Concave-convex structure; 9. Oil gathering area.

Detailed ways

Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative, and in no way serves as any limitation to the present disclosure and its application or use. The present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present disclosure thorough and complete, and to fully express the scope of the present disclosure to those skilled in the art. It should be noted that unless specifically stated otherwise, the relative arrangement of components and steps, material components, numerical expressions and numerical values set forth in these embodiments should be construed as merely exemplary rather than limiting.

The "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. Similar words such as "include" or "include" mean that the element before the word covers the elements listed after the word, and does not exclude the possibility of covering other elements as well. "Up", "Down", "Left", "Right", etc. are only used to indicate the relative position relationship. When the absolute position of the described object changes, the relative position relationship may also change accordingly.

In the present disclosure, when it is described that a specific device is located between the first device and the second device, there may or may not be an intermediate device between the specific device and the first device or the second device. When it is described that a specific device is connected to another device, the specific device may be directly connected to the other device without an intervening device, or may not be directly connected to the other device but with an intervening device.

All terms (including technical terms or scientific terms) used in the present disclosure have the same meaning as understood by those of ordinary skill in the art to which the present disclosure belongs, unless specifically defined otherwise. It should also be understood that terms such as those defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of related technologies, and should not be interpreted in idealized or extremely formalized meanings, unless explicitly stated here. Define like this.

The technologies, methods, and equipment known to those of ordinary skill in the relevant fields may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be regarded as part of the specification.

It is found through research that the gas discharged from the compressor (that is, the mixed gas of refrigerant vapor and part of the lubricating oil) is superheated vapor, which is transported to the condenser through the discharge pipe. The oil-containing refrigerant affects the heat transfer of condensation and evaporation, resulting in lower thermal efficiency, and when the oil return of the system is blocked, the compressor cannot be lubricated in time, which is detrimental to the efficient and stable operation of the compressor.

In view of this, the present disclosure provides a muffler structure, a compressor, and a refrigerator that can ensure the timely oil return of the compressor.

With reference to FIG. 1, according to an embodiment of the present disclosure, a muffler structure includes: a housing 4 in which a silencing cavity is provided; and an oil return portion is provided in the silencing cavity. This can ensure that the compressor returns oil in time, reduce the deterioration of heat transfer caused by the refrigerant with oil, and can avoid the problem of untimely or insufficient lubricating oil returning through the system, and the performance of the refrigerator compressor is greatly improved.

As shown in FIG. 2 in combination, an inlet 5 and an outlet 6 are provided on the housing 4, and both the inlet 5 and the outlet 6 are connected to the muffler cavity. In some embodiments, the muffler cavity is provided with a first partition 41, the first partition 41 divides the muffler cavity into a first chamber and a second chamber, and the first partition 41 is provided with a first circulation hole 412; The first circulation hole 412 communicates with the first chamber and the second chamber.

In some embodiments, a second partition 42 is further provided in the muffler cavity, and the second partition 42 divides the second chamber into two circulation cavities; the two circulation cavities are arranged in sequence in the fluid flow direction; the second partition 42 42 is provided with a second circulation hole 421; the second circulation hole 421 communicates with the two circulation chambers, through the three-stage noise reduction, the occurrence and transmission of exhaust noise can be greatly reduced, and the occurrence and transmission of refrigerator compressor noise can be greatly reduced. The noise performance of the compressor has been greatly improved.

In some embodiments, the inlet 5, the first chamber, the second chamber, and the outlet 6 are arranged in sequence in the fluid flow direction; the oil return part includes an oil return groove 411; the oil return groove 411 is arranged on the first partition 41 close to the inlet 5. on the surface.

In some embodiments, the muffler structure further includes an outlet pipe 7, the first end of the outlet pipe 7 is connected to the outlet 6, and the length of the outlet pipe 7 is 20-40 cm.

In some embodiments, the oil return part further includes an oil return member 8, and the oil return member 8 corresponds to the position of the oil return groove 411; the oil return member 8 is used to guide the oil in the muffler cavity to flow out.

In some embodiments, the oil return member 8 includes an oil return hole and a sealing portion 81; the oil return hole is opened on the housing 4; the sealing portion 81 seals the oil return hole as the sealing position; the sealing portion 81 opens the oil return hole as Oil return position; the sealing part 81 is movable between the sealing position and the oil return position.

With reference to Figures 3-5, the oil return member 8 further includes a sliding rod 83 and a limiting portion 82; the sealing portion 81 is arranged in the first chamber; the limiting portion 82 is arranged outside the housing 4; One end is connected to the sealing portion 81, and the second end is connected to the limiting portion 82; and the sliding rod 83 is slidably arranged in the oil return hole; the orthographic projections of the limiting portion 82 and the sealing portion 81 on the cross section of the oil return hole are both larger than The cross-sectional area of the oil return hole.

In some embodiments, the material density of the sealing portion 81 is p1, p1=0.2-0.9 g/cm ³ .

In some embodiments, the oil return groove 411 corresponds to the position of the inlet 5 in the fluid flow direction.

In some embodiments, the sealing portion 81 includes a sealing area 811 and a force-receiving area 812 that are connected, and the sealing area 811 is located on the outer peripheral side of the force-receiving area 812. In the sealing position, the sealing area 811 is sealed in the oil return hole and the oil return hole is sealed. There is a gap between the stressed area 812 and the inner surface of the housing 4.

In some embodiments, the first partition 41 is inclined toward the entrance 5, and the second partition 42 is inclined toward the direction away from the entrance 5, which can increase the airflow turbulence stroke, increase the exhaust noise reduction effect, and can mix in The oil in the gas stays on the partition, increasing the oil return effect.

In some embodiments, the bottom of the casing 4 is inclined, and an oil collecting area is formed between the first partition 41 and the inner surface of the casing 4, and the oil return member 8 is located in the oil collecting area.

In some embodiments, the outlet pipe 7 is a curved pipe, which can effectively reduce exhaust vibration.

In some embodiments, the material density of the sliding rod 83 and the limiting portion 82 are both p2, where p2=0.2˜0.9 g/cm ³ . The sliding rod 83, the limiting portion 82, and the sealing portion 81 can all be hollow plastic, resin and other polymer materials.

In some embodiments, when in the sealed position, the stressed area 812 and the inner surface of the housing 4 are connected by a concave-convex structure 84.

In some embodiments, protrusions are provided on the stressed area 812; grooves are correspondingly provided on the inner surface of the housing 4; when in the sealed position, the protrusions snap into the grooves.

In some embodiments, the first circulation hole 412 is located above the oil return groove 411; in some embodiments, the second circulation hole 421 is located below the oil return groove 411, which can increase the turbulence path of the airflow and further complete the exhaust process. Noise reduction.

In some embodiments, the first circulation hole 412 has a constant cross-section or a variable cross-section, and the second circulation hole 421 has a constant cross-section or a variable cross-section. For example, the cross-sectional area of the first flow hole 412 is S1; the cross-sectional area of the second flow hole 421 is S2; wherein, S1 is a constant value or S1 is a variable value, and S2 is a constant value or S2 is a variable value.

The compressor exhaust is a high-speed airflow, and enters the first chamber of the muffler oil return device through the inlet 5. As the small hole enters the large space, it can achieve noise reduction and noise reduction, and complete the first exhaust muffler. At this time, the exhaust gas is directly flushed on the oil return groove 411 of the first partition 41 of the muffler oil return device, so that after the high-speed airflow flows through the oil return groove 411, the impact loss of the high-speed airflow is reduced, and the pressure pulsation is small, and the exhaust noise Also smaller. At the same time, the small droplets of lubricating oil carried by the refrigerant vapor collide and gather when flowing through the recessed structure. Under the action of gravity, they gather in the oil collection area at the bottom of the first chamber of the muffler oil return device, and accumulate more lubricating oil. The oil return is separated in time through the oil return part 8.

The high-pressure and high-temperature exhaust gas after the separation of oil and gas moves upward and enters the second chamber through the first circulation hole 412. The first circulation hole 412 and the second circulation hole 421 are arranged staggered up and down. At the same time, the second exhaust silencing is completed; the exhaust after the second exhaust silencing enters the third chamber, and the third exhaust silencing is completed. Finally, the oil flowing into the third chamber flows into and out of the pipe 7 It flows into the first exhaust port 2 through the outlet pipe 7.

With reference to Fig. 6, according to an embodiment of the present disclosure, a compressor includes any of the foregoing muffler structural embodiments.

In some embodiments, the compressor further includes a compressor housing 1 and a cylinder 3. The compressor housing 1 is provided with a first exhaust port 2; the cylinder 3 is provided in the compressor housing 1, and the cylinder 3 is provided with a second exhaust port. The exhaust port 2; the muffler structure is arranged in the compressor housing 1; when the muffler housing 4 is provided with an inlet 5 and an outlet 6, the inlet 5 is connected to the second exhaust port 2, and the outlet 6 is connected to the first exhaust port 2. Timely oil and gas separation and oil return in the exhaust process. In some embodiments, the second end of the outlet pipe 7 communicates with the first exhaust port 2.

When the compressor runs for a long time or the exhaust oil has a large amount of oil, it is likely that a lot of lubricating oil will accumulate in the oil collection area at the bottom of the first chamber. A series of related problems such as thermal deterioration, reduced compressor performance and delayed oil return. Therefore, the oil return member 8 is provided to discharge oil. In the actual operation of the compressor, since the sealing part 81 and the limiting part 82 are made of light materials, their density is small and the volume is too large, and the sealing part 81 is in the first chamber. Since the exhaust pressure is dozens of times the suction pressure outside the cavity, that is, the pressure in the muffler cavity is greater than the pressure outside the muffler cavity; and the oil return member 8 achieves high-requirement sealing performance under the action of its own gravity.

When the compressor is temporarily stopped, because the internal and external pressures of the exhaust and oil return muffler chamber are equal, and there is a large amount of lubricating oil accumulated in the bottom of the first chamber, the light and large sealing portion 81 can overcome its own gravity. The sealing portion 81 opens the oil return hole, realizing the timely return of the lubricating oil in the muffler cavity, and the limiting portion 82 plays a role of buffering during the recovery. When the lubricating oil returns, the balance between the buoyancy of the sealing portion 81 and its own gravity is broken, and the sealing is realized again.

According to an embodiment of the present disclosure, a refrigerator includes a compressor, and the compressor is the above-mentioned compressor. It is easy for those skilled in the art to understand that, on the premise that there is no conflict, the above advantageous methods can be freely combined and superimposed.

So far, the various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solutions disclosed herein.

The above are only the preferred embodiments of the present disclosure and are not intended to limit the present disclosure. Any modification, equivalent replacement and improvement made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure. Inside. The above are only the preferred embodiments of the present disclosure. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principles of the present disclosure, several improvements and modifications can be made, and these improvements and modifications should also be made. It is regarded as the protection scope of this disclosure.

Claims

A muffler structure includes:

The housing (4) is provided with a silencer cavity, the housing (4) has an inlet (5) and an outlet (6), and both the inlet (5) and the outlet (6) are in communication with the silencer cavity ；

The oil return part is arranged in the muffler cavity; and

The first partition (41) is located in the silencing chamber and divides the silencing chamber into a first chamber and a second chamber, and the first partition (41) has a communication with the first chamber And the first circulation hole (412) of the second chamber,

Wherein, the oil return portion includes an oil return groove (411), and the oil return groove (411) is located on a surface of the first partition (41) on a side close to the inlet (5).
The muffler structure according to claim 1, further comprising:

The second partition (42) is located in the muffler cavity and divides the second chamber into two circulation cavities, the two circulation cavities are arranged in sequence in the fluid flow direction,

Wherein, the second partition (42) has a second circulation hole (421) communicating with the two circulation cavities.
The muffler structure according to claim 2, wherein the oil return part further comprises:

The oil return member (8), corresponding to the position of the oil return groove (411), is configured to guide the oil in the muffler cavity to flow out.
The muffler structure according to claim 3, wherein the oil return member (8) comprises:

The oil return hole is opened on the housing (4); and

The sealing portion (81) is configured to use the sealing portion (81) to seal the oil return hole as a sealing position, and to open the oil return hole by the sealing portion (81) as an oil return position. It is movable between the position and the oil return position.
The muffler structure according to claim 4, wherein the oil return member (8) further comprises:

A sliding rod (83) is slidably arranged in the oil return hole, a first end of the sliding rod (83) is connected to the sealing portion (81), and a second end is connected to the limiting portion (82) ;with

The limit part (82) is arranged outside the casing (4),

Wherein, the sealing portion (81) is arranged in the first chamber, and the orthographic projections of the limiting portion (82) and the sealing portion (81) on the cross section of the oil return hole are larger than all State the cross-sectional area of the oil return hole.
The muffler structure according to claim 5, wherein the material density of the sealing part (81) is p1, and p1=0.2～0.9g/cm 3 , the sliding rod (83) and the limiting part The density of (82) is p2, and p2=0.2～0.9g/cm 3 .
The muffler structure according to claim 5, wherein the sealing portion (81) comprises:

The sealing area (811) is located on the outer peripheral side of the stressed area (812) and is configured to be blocked in the oil return hole when in the sealing position, and to seal the oil return hole; and

The stressed area (812) is connected to the sealing area (811) and has a gap with the inner surface of the housing (4), and is configured to be in contact with the housing (4) when in the sealing position The inner surface is connected by a concave-convex structure (84).
The muffler structure according to claim 7, wherein the stressed area (812) has a protrusion; the inner surface of the housing (4) has a groove corresponding to the protrusion, and the protrusion is It is configured to snap into the groove when in the sealing position.
The muffler structure according to claim 2, wherein the oil return groove (411) is directly opposite to the inlet (5) in the fluid flow direction, and the first partition (41) is close to the inlet (5). ) Is inclined, and the second partition (42) is inclined to a direction away from the inlet (5).
The muffler structure according to claim 3, wherein the bottom of the casing (4) is inclined, and an oil collecting area is formed between the first partition (41) and the inner surface of the casing (4) , The oil return member (8) is located in the oil collection area.
The muffler structure according to claim 3, further comprising:

The outlet pipe (7), one end is connected to the outlet (6),

Wherein, the length of the outlet tube (7) is 20-40 cm, and the outlet tube (7) is a curved tube.
The muffler structure according to claim 2, wherein the first circulation hole (412) is located above the oil return groove (411), and the second circulation hole (421) is located on the oil return groove (411) Below.
The muffler structure according to claim 2, wherein the first circulation hole (412) has a constant cross section or a variable cross section, and the second circulation hole (421) has a constant cross section or a variable cross section.
A compressor comprising the muffler structure according to any one of claims 1-13.
The compressor according to claim 14, further comprising:

The compressor housing (1) has a first exhaust port (2); and

The cylinder (3) is arranged in the compressor housing (1) and has a second exhaust port (2),

Wherein, the muffler structure is arranged in the compressor casing (1), the inlet (5) of the casing (4) of the muffler is in communication with the second exhaust port (2), and the outlet (6) ) Communicate with the first exhaust port (2).
A refrigerator comprising the compressor according to any one of claims 14-15.