CN114934892A

CN114934892A - Silencer, compressor and household appliance

Info

Publication number: CN114934892A
Application number: CN202210656308.6A
Authority: CN
Inventors: 余圣辉; 伍智勤; 申孟亮; 瞿赛
Original assignee: Hefei Hualing Co Ltd; Midea Group Co Ltd; Hefei Midea Refrigerator Co Ltd
Current assignee: Hefei Hualing Co Ltd; Midea Group Co Ltd; Hefei Midea Refrigerator Co Ltd
Priority date: 2022-06-10
Filing date: 2022-06-10
Publication date: 2022-08-23

Abstract

The application discloses muffler, compressor and domestic appliance. The muffler includes a housing, an inlet, and an outlet. The shell is provided with a cavity. The first end of casing and with the inside intercommunication of cavity are located to the entry, and the entry is equipped with the rectifier tube that stretches into the cavity inside, is equipped with a plurality of diffluence holes on the rectifier tube. The outlet is arranged at the second end of the shell and is communicated with the cavity. In the silencer, the compressor and the household appliance, the plurality of shunting holes are formed in the rectifying pipe inside the cavity to divide exhaust gas into fine airflow, so that pulse noise is effectively reduced; simultaneously, the momentum of tiny air current is lower, and when striking the casing, more refrigerants and lubricating oil are separated, and when the compressor was shut down, lubricating oil can be because of the pressure differential of cavity inside is oppressed flow direction entry one side and is accumulated to in the compressor of flow distribution hole and entry backward flow, both avoided oily refrigerant to influence condensation and evaporation heat transfer, guaranteed heat exchange efficiency, made the compressor can in time be lubricated again, guaranteed the high-efficient even running of compressor.

Description

Silencer, compressor and household appliance

Technical Field

The present application relates to the field of household appliance technology, and more particularly, to a muffler, a compressor having the muffler, and a household appliance having the compressor.

Background

At present, the exhaust of a compressor of a household appliance is high-temperature and high-pressure gas, the gas flow speed is high, and the compressor generates large vibration and noise during exhaust, so that the comprehensive performance of the compressor is directly influenced; accordingly, a muffler for a compressor has been produced.

However, the gas discharged by the compressor is superheated vapor, that is, the refrigerant vapor contains a mixed gas of partial lubricating oil, and the mixed gas is conveyed to the condenser through a pipeline, the refrigerant containing oil affects condensation and evaporation heat transfer, so that the heat exchange efficiency is reduced, and when the oil return of the system is blocked, the compressor cannot be lubricated in time, so that the compressor is not beneficial to efficient and stable operation.

Therefore, how to provide a muffler, a compressor and a household appliance which can ensure timely oil return of the compressor becomes a problem to be solved by those skilled in the art.

Disclosure of Invention

The embodiment of the application provides a muffler, compressor and domestic appliance for solve the problem of how to realize oil return and amortization simultaneously at least.

The silencer that this application embodiment provided includes casing, entry and export. The shell is provided with a cavity. The entry is located the first end of casing and with the inside intercommunication of cavity, the entrance is equipped with and stretches into the inside rectifying tube of cavity, be equipped with a plurality of reposition of redundant personnel holes on the rectifying tube. The outlet is arranged at the second end of the shell and communicated with the cavity.

In the silencer, the rectifying tube extending into the cavity is arranged at the inlet, the rectifying tube is provided with the plurality of shunting holes, and the plurality of shunting holes can divide exhaust into fine airflow, so that pulse noise can be effectively reduced; momentum of the tiny airflow on the other hand is lower, when striking the casing, be favorable to more refrigerant and lubricating oil to be separated, when the compressor shuts down, the pressure of the export one side of muffler is greater than the pressure of the entry one side of muffler, lubricating oil can be because the inside pressure differential of cavity is oppressed flow direction entry one side and is accumulated, when the oil height of accumulation crosses discharge orifice, just can flow back to in the compressor through the entry, can avoid oily mist to carry the condenser through the pipeline, oily refrigerant influences condensation and evaporation heat transfer, thereby guarantee heat exchange efficiency, can guarantee the compressor in time to be lubricated again, guarantee the high-efficient even running of compressor.

In some embodiments, the first end is opposite the second end, and a center of the inlet is offset from a center of the outlet in a direction from the first end to the second end. Therefore, the silencer does not need to be provided with an additional oil return structure, and lubricating oil can flow back into the compressor through the shunting hole and the inlet by means of left and right pressure difference under the condition that the compressor is stopped, so that the compressor can be lubricated in time, and the efficient and stable operation of the compressor is ensured.

In some embodiments, a center of the inlet is located lower than a center of the outlet in a radial direction of the housing. Therefore, the silencer does not need to be provided with an additional oil return structure, and lubricating oil can flow back into the compressor through the shunting hole and the inlet by means of left and right pressure difference under the condition that the compressor is stopped, so that the compressor can be lubricated in time, and the efficient and stable operation of the compressor is ensured.

In some embodiments, the diameter of the diversion hole is 0.5mm or more and 4mm or less. The aperture of the shunting hole is larger than or equal to 0.5mm and smaller than or equal to 4mm, so that the resistance of the fluid when the fluid passes through cannot be too large, the fluid passing efficiency is ensured, the processing difficulty is reduced, and meanwhile, the separation of the refrigerant and the lubricating oil can be increased by the divided fine airflow, so that the subsequent oil return is smoother.

In certain embodiments, the muffler further comprises at least one baffle disposed within the cavity with a gap between an inner wall of the cavity, the gap for passage of the fluid. The baffle of muffler internally mounted can effectively prolong the separation distance of refrigerant and lubricating oil, makes the separation of the two more abundant, and follow-up ability is abundant to return oil on the one hand, guarantees the high-efficient even running of compressor, and on the other hand avoids oily refrigerant to influence condensation and evaporation heat transfer to guarantee heat exchange efficiency.

In some embodiments, the number of the baffles is multiple, and the baffles are arranged in the cavity in a staggered mode to form a serpentine channel between the baffles and the outlet. The tiny air current momentum that is cut apart into by the reposition of redundant personnel hole is lower, when passing through serpentine channel, will probably strike the baffle, and the process of striking is favorable to more refrigerants and lubricating oil to separate, makes the separation of the two more abundant, and follow-up ability is abundant to return oil on the one hand, guarantees the high-efficient even running of compressor, and on the other hand avoids oily refrigerant to influence condensation and evaporation heat transfer to guarantee heat exchange efficiency.

In certain embodiments, the housing comprises a first side and a second side between the first end and the second end; a portion of the baffle extends from the first side toward the second side and forms the gap with the second side, and another portion of the baffle extends from the second side toward the first side and forms the gap with the first side. The clearance between baffle and the shells inner wall is crisscross the setting from top to bottom, makes the tiny air current of being cut apart into by the reposition of redundant personnel hole strike the baffle at the in-process of marcing, is favorable to more refrigerants and lubricating oil to separate, makes the separation of the two more abundant, and follow-up ability is abundant to return oil on the one hand, guarantees the high-efficient even running of compressor, and on the other hand avoids oily refrigerant to influence condensation and evaporation heat transfer to guarantee heat exchange efficiency.

In some embodiments, in the case that the first side is the lower side of the housing, an oil return hole is formed at a joint of the baffle plate located at the first side and the inner wall of the cavity, and the oil return hole is used for oil to pass through. When the compressor is shut down, the pressure of the export one side of muffler is greater than the pressure of the entry one side of muffler, lubricating oil can be because the inside pressure differential of cavity is oppressed and is accumulated through oil gallery flow direction entry one side, when the high overflowing hole of accumulated oil, just can flow back to the compressor in through rectifier tube and entry, can avoid oily mist to carry the condenser through the pipeline, oily refrigerant influences condensation and evaporation heat transfer, thereby guarantee heat exchange efficiency, can guarantee in time that the compressor is lubricated again, guarantee the high-efficient even running of compressor.

In some embodiments, the muffler further includes an oil return capillary tube penetrating through a side wall of the housing and communicating with the cavity to output the returned oil. The utility model provides a muffler utilizes oil return capillary to flow back lubricating oil to the compressor in, not only can realize the backward flow when the compressor shuts down, also can realize the backward flow at the compressor during operation, and the backward flow is more abundant, also can guarantee more that the compressor can in time obtain lubricating, guarantees the high-efficient even running of compressor.

The compressor that this application embodiment provided includes shell and the silencer of any one above-mentioned embodiment, the silencer is installed in the shell.

In the silencer of the compressor, the rectifying tube extending into the cavity is arranged at the inlet, the rectifying tube is provided with the plurality of shunting holes, and the plurality of shunting holes can divide exhaust into fine airflow, so that on one hand, pulse noise can be effectively reduced; the momentum of the tiny air current of on the other hand is lower, when striking the casing, be favorable to more refrigerants and lubricating oil to separate, when the compressor shut down, the pressure of the export one side of muffler is greater than the pressure of the entry one side of muffler, lubricating oil can be because the inside pressure differential of cavity is oppressed flow direction entry one side and is accumulated, when the oil height overflow hole of accumulation, just can flow back to the compressor in through the entry, can avoid oily mist to carry the condenser through the pipeline, oily refrigerant influences condensation and evaporation heat transfer, thereby guarantee heat exchange efficiency, can guarantee the compressor in time to obtain the lubrication again, guarantee the high-efficient even running of compressor.

The household appliance provided by the embodiment of the application comprises the silencer in any one of the above embodiments.

The household appliance provided by the embodiment of the application comprises the compressor of the embodiment.

In the silencer of the household appliance, the rectifying tube extending into the cavity is arranged at the inlet, the rectifying tube is provided with the plurality of shunting holes, and the plurality of shunting holes can divide exhaust into fine airflow, so that on one hand, pulse noise can be effectively reduced; the momentum of the tiny air current of on the other hand is lower, when striking the casing, be favorable to more refrigerants and lubricating oil to separate, when the compressor shut down, the pressure of the export one side of muffler is greater than the pressure of the entry one side of muffler, lubricating oil can be because the inside pressure differential of cavity is oppressed flow direction entry one side and is accumulated, when the oil height overflow hole of accumulation, just can flow back to the compressor in through the entry, can avoid oily mist to carry the condenser through the pipeline, oily refrigerant influences condensation and evaporation heat transfer, thereby guarantee heat exchange efficiency, can guarantee the compressor in time to obtain the lubrication again, guarantee the high-efficient even running of compressor.

Additional aspects and advantages of embodiments of the present application 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 embodiments of the present application.

Drawings

The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic view of the external structure of a muffler according to an embodiment of the present application;

FIG. 2 is a schematic view of the internal structure of the muffler shown in FIG. 1;

FIG. 3 is a schematic view of the internal structure of a muffler in another embodiment of the present application;

FIG. 4 is a schematic view of the external structure of a muffler according to still another embodiment of the present application;

FIG. 5 is a schematic view of the internal structure of the muffler shown in FIG. 4;

FIG. 6 is a schematic view of the construction of the baffle on the first side of the muffler shown in FIG. 5;

FIG. 7 is a schematic view of the internal structure of a muffler in accordance with still another embodiment of the present application;

FIG. 8 is a schematic view of a compressor in certain embodiments of the present application;

FIG. 9 is a schematic structural diagram of a household appliance in certain embodiments of the present application;

fig. 10 is a schematic structural diagram of a home appliance in some embodiments of the present application.

Description of the main element symbols:

a household appliance 1000;

a compressor 100; a muffler 10; the housing 11, the cavity 111, the first end 113, the second end 115, the first side 117, and the second side 119; an inlet 13; an outlet 15; a rectifying tube 17, a diversion hole 171; the baffle 18, the first baffle 1811, the second baffle 183, the gap 180 and the oil return hole 185; an oil return capillary 19; a housing 20;

a condenser 200; an evaporator 300; a regenerator 400, a throttle member 500; an anti-dew tube 600; the filter 700 is dried.

Detailed Description

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

In the description of the embodiments of the present application, it is worth mentioning that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships that are based on those shown in the drawings, and are only for convenience of describing the embodiments of the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the embodiments of the present application. The features defined as "first", "second" may explicitly or implicitly include one or more of the features described. In the description of the embodiments of the present application, "a plurality" means two or more unless explicitly defined otherwise.

In the description of the embodiments of the present application, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected unless otherwise explicitly stated or limited; may be mechanically, electrically or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other suitable relationship. Specific meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.

In embodiments of the present application, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact with each other through another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different configurations of embodiments of the application. In order to simplify the disclosure of the embodiments of the present application, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present application. Embodiments of the present application may repeat reference numerals and/or reference letters in the various examples for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. Embodiments of the present application provide examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

Referring to fig. 1, 2, 5 and 7, a silencer 10 according to an embodiment of the present disclosure includes a housing 11, an inlet 13 and an outlet 15. The housing 11 is provided with a cavity 111. The inlet 13 is disposed at the first end 113 of the housing 11 and is communicated with the interior of the cavity 111, the rectifying tube 17 extending into the interior of the cavity 111 is disposed at the inlet 13, and the rectifying tube 17 is provided with a plurality of flow dividing holes 171. The outlet 15 is disposed at the second end 115 of the housing 11 and is in communication with the cavity 111. The housing 11 may be a copper tube can.

Generally, the silencer is a flared pipe fitting and is installed between the exhaust of the compressor and the condenser, so that the pulse noise of the exhaust of the compressor can be reduced, however, for high-pressure refrigerants, only the flared pipe fitting is adopted, and the impact sound generated by flushing the pipe body with the exhaust cannot be avoided. The existing compressor usually contains excessive oil, a liquid storage device is installed on an outlet of an evaporator or an air return pipe fitting to have an oil return function, the liquid storage device installed on the outlet of the evaporator returns oil to the evaporator, even if the liquid storage device installed on the air return pipe fitting cannot avoid storing a large amount of oil in the evaporator, lubricating oil obviously increases heat exchange thermal resistance in the evaporator, and the heat exchange efficiency of the evaporator is reduced.

In the silencer 10, the rectifying pipe 17 extending into the cavity 111 is arranged at the inlet 13, the rectifying pipe 17 is provided with the plurality of shunting holes 171, and the plurality of shunting holes 171 can divide exhaust gas into fine airflow, so that on one hand, pulse noise can be effectively reduced; on the other hand, the momentum of the fine airflow is low, when the fine airflow collides with the tank body (the shell 11), the separation of more refrigerants and lubricating oil is facilitated, when the compressor 100 stops, the pressure intensity on one side of the outlet 15 of the silencer 10 is greater than the pressure intensity on one side of the inlet 13 of the silencer 10, the lubricating oil can be accumulated on one side of the inlet 13 due to the fact that the pressure difference inside the cavity 111 is pressed, when the accumulated oil is higher than the overflow hole 171, the oil can flow back to the compressor 100 through the rectifying pipe 17 and the inlet 13, the oil-containing mixed gas can be prevented from being conveyed to a condenser through a pipeline, the oil-containing refrigerant influences condensation and evaporation heat transfer, the heat exchange efficiency is guaranteed, the compressor 100 can be lubricated timely, and the efficient and stable operation of the compressor 100 is guaranteed. From this, muffler 10 of this application simple structure, with low costs, integrated amortization and oil return function, can effectively lower exhaust pulse sound, also can prevent that a large amount of oil from getting into condenser, evaporimeter, before the oil lock of compressor 100 improves heat exchange efficiency.

The present application is described in further detail below with reference to the drawings attached hereto.

First embodiment

Referring to fig. 1 and 2, the first end 113 is connected to a discharge port of the compressor 100 (shown in fig. 9 or 10), and the second end 115 is connected to the condenser 200 (shown in fig. 9 or 10). In some examples, first end 113 is opposite second end 115, and the center of inlet 13 is offset from the center of outlet 15 in the direction from first end 113 to second end 115. In other words, the center of the inlet 13 is not aligned with the center of the outlet 15 in the longitudinal direction of the housing 11. Specifically, in the case where the muffler 10 is installed in the compressor 100 (shown in fig. 8), or assembled as a component of the refrigeration system 1000 (shown in fig. 9), the center of the inlet 13 is located lower than the center of the outlet 15 in the radial direction of the housing 11. More specifically, the housing 11 includes a first side 117 and a second side 119 located between the first end 113 and the second end 115, the first side 117 being a lower side, the second side 119 being an upper side opposite the first side 117, a center of the inlet 13 and a center of the outlet 15 being aligned on opposite sides of a long axis OO1 of the housing 11, and the center of the inlet 13 being closer to the first side 117 than the center of the outlet 15. The liquid level difference between the inlet 13 and the outlet 15 makes the muffler 10 not need to be provided with an additional oil return structure, but can make the lubricating oil enter the rectifier tube through the diversion hole 171 by the left-right pressure difference under the condition that the compressor 100 is stopped, and then the lubricating oil flows back into the compressor 100 through the inlet 13, thereby ensuring that the compressor 100 can be lubricated in time and ensuring that the compressor 100 operates efficiently and stably.

In some examples, the opening size of the inlet 13 is the same as the opening size of the outlet 15, and in other examples, the opening size of the inlet 13 is different from the opening size of the outlet 15, and may be larger than the opening size of the outlet 15 for the inlet 13, or smaller than the opening size of the outlet 15 for the inlet 13. The cross-sectional shapes of the inlet 13 and the outlet 15 may be not limited, and may be circular, square, oval, and the like.

Referring to fig. 1 and fig. 2, in some examples, the number of the diversion holes 171 on the rectifier tube 17 is plural, and the plural diversion holes 171 are distributed on the sidewall of the rectifier tube 17. Wherein, the aperture of each diversion hole 171 is not less than 0.5mm and not more than 4 mm. For example, the aperture of the diversion hole 171 may be any one of 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.4mm, 1.8mm, 1.9mm, 2.4mm, 2.8mm, 2.9mm, 3.2mm, 3.4mm, 3.5mm, 3.6mm, 3.8mm, 4.0mm or any value in between. When the aperture of the diversion hole 171 is smaller than 0.5mm, the resistance of the fluid passing through is larger, the passing efficiency is affected, and the processing difficulty of the rectifier tube 17 is increased; on the other hand, if the diameter of the flow dividing hole 171 is larger than 4mm, the flow divided by the flow dividing hole 171 is not fine enough, and the separation between the refrigerant and the lubricating oil cannot be increased. Therefore, the aperture of each flow distribution hole 171 is larger than or equal to 0.5mm, and is smaller than or equal to 4mm, so that the resistance when the fluid passes through cannot be too large, the fluid passing efficiency is ensured, the processing difficulty is reduced, in addition, the separation of the refrigerant and the lubricating oil can be increased by the divided fine airflow, and the subsequent oil return is smoother and smoother.

In one example, all of the shunt holes 171 have the same diameter, which facilitates machining. In another example, the partial flow-dividing holes 171 have the same diameter and the partial flow-dividing holes 171 have the same diameter, so that the cross sections of the divided fine airflows are not uniform, thereby further increasing the separation effect between the refrigerant and the lubricating oil.

When a comparative sound attenuation test was performed using the muffler 10 of the first embodiment of the present application and an existing muffler (using only flared tubing), the test protocol: introducing 1Mpa nitrogen at the inlet 13, and listening in the anechoic chamber; during the test, the existing silencer emits a harsh scouring sound of split ends, while the silencer 10 of the present embodiment emits a low hissing sound; the acoustic power measured at a vertical distance of 0.5m from the tank of the existing silencer was 39.8dB, while the acoustic power measured at a vertical distance of 0.5m from the tank of the silencer 10 of this embodiment was 34.6 dB. The single test results show that the muffler 10 of the present embodiment can effectively reduce noise when the compressor 100 exhausts.

When the muffler 10 according to the first embodiment of the present invention is used in a comparison oil return test with an existing muffler (only using a flared pipe), two types of mufflers are installed on a prototype of the same refrigerator, and the R290 compressors 100 and 55gR290 are used to disassemble the muffler after one-cycle operation, and then the muffler is cut. While a large amount of oil remains in the tank of the conventional muffler, the amount of oil remaining in the tank of the muffler 10 of the present embodiment is small. Under the same oil outlet condition, it can be confirmed that the oil carried by the exhaust gas of the compressor 100 exceeds the oil storage capacity of the muffler 10, while the excess oil of the existing muffler is carried to the condenser and the evaporator through the exhaust gas, and the inlet 13 and the outlet 15 of the muffler 10 of the present embodiment have a liquid level difference, so that the oil is easier to return to the compressor 100 through the rectifying pipe 17, and therefore, the residual oil in the tank body is less.

As can be clearly seen from the above silencing test result and the oil return test result, the silencer 10 of the present embodiment has a better silencing effect and a better oil return effect than the existing silencer.

Second embodiment

Referring to fig. 3, the structure and functional effects of the muffler 10 of the present embodiment are substantially the same as those of the muffler 10 of the first embodiment, except that: the muffler 10 of this embodiment may further include an oil return capillary tube 19, where the oil return capillary tube 19 penetrates through a side wall of the housing 11 and is used to communicate with the cavity 111 to output the returned oil. Specifically, the oil return capillary 19 is disposed outside the housing 11, i.e., outside the cavity 111, but penetrates through a sidewall of the housing 11 to communicate with the cavity 111. The oil return capillary 19 can return the lubricating oil to the interior of the compressor 100 to ensure timely lubrication and efficient and stable operation of the compressor 100. Compared with the oil return in the muffler 10 of the first embodiment, the oil return forces the lubricating oil to enter the rectifying pipe 17 and then return to the compressor 100 by utilizing the pressure difference when the compressor 100 stops, the muffler 10 of the application returns the lubricating oil to the compressor 100 by utilizing the oil return capillary tube 19, so that the return flow can be realized when the compressor 100 stops, the return flow can also be realized when the compressor 100 works, the return flow is more sufficient, the compressor 100 can be timely lubricated, and the efficient and stable operation of the compressor 100 is ensured.

Third embodiment

Referring to fig. 4 and 5, the structure and functional effects of the muffler 10 according to the embodiment of the present invention are substantially the same as those of the muffler 10 according to the first embodiment, except that: the muffler 10 of this embodiment may further include at least one baffle 18, and the baffle 18 is disposed in the cavity 111 and has a gap 180 with an inner wall of the cavity 111, and the gap 180 allows the fluid to pass through. Baffle 18 of muffler 10 internally mounted can effectively prolong the separation distance of refrigerant and lubricating oil, makes the separation of the two more abundant, and follow-up ability on the one hand is abundant to be returned oil, guarantees the high-efficient even running of compressor 100, and on the other hand avoids oily refrigerant to influence condensation and evaporation heat transfer to guarantee heat exchange efficiency.

In one example, the number of baffles 18 may be one. In another example, the number of the baffles 18 may be multiple, and a plurality of the baffles 18 are staggered in the cavity 111 to form a serpentine channel (as shown by the arrows in fig. 5) between the baffles 18 and the outlet 15. For example, in the muffler 10 of the present embodiment, the number of baffles 18 is two, and the baffles are the first baffle 181 and the second baffle 183, respectively. The tiny air current momentum of being cut apart into by reposition of redundant personnel hole 171 is lower, when passing through serpentine channel, will probably strike first baffle 181 and second baffle 183, and the process of striking is favorable to more refrigerants and lubricating oil to separate, makes the separation of the two more abundant, and follow-up ability is abundant to return oil on the one hand, guarantees the high-efficient even running of compressor 100, and on the other hand avoids oily refrigerant to influence condensation and evaporation heat transfer to guarantee heat exchange efficiency.

Specifically, a portion of baffle 18 extends from first side 117 toward second side 119 and forms gap 180 with second side 119, and another portion of baffle 18 extends from second side 119 toward first side 117 and forms gap 180 with first side 117. More specifically, first baffle 18 extends from first side 117 toward second side 119 and forms a gap 180 with second side 119, and second baffle 183 extends from second side 119 toward first side 117 and forms gap 180 with first side 117. The clearance 180 between baffle 18 and the casing 11 inner wall is crisscross the setting from top to bottom, makes the tiny air current of being cut apart into by reposition of redundant personnel hole 171 strike baffle 18 at the in-process of marcing, is favorable to more refrigerants and lubricating oil to separate, makes the separation of the two more abundant, and follow-up ability is abundant to return oil on the one hand, guarantees the high-efficient even running of compressor 100, and on the other hand, avoids oily refrigerant to influence condensation and evaporation heat transfer to guarantee heat exchange efficiency.

Referring to fig. 6, an oil return hole 185 is disposed at a joint of the first baffle 181 located on the first side 117 and the inner wall of the cavity 111, and the oil return hole 185 is used for oil to pass through. Specifically, the oil return hole 185 may be disposed on the first baffle 181, and in this case, the oil return hole 185 may be a notch on the first baffle 181. Alternatively, the oil return hole 185 may be disposed on an inner wall of the cavity 111, in which case, the oil return hole 185 may be a groove on the inner wall of the cavity 111. Or, a part of the oil return hole 185 is disposed on the first baffle 18, and another part of the oil return hole 185 is disposed on the inner wall of the cavity 111, at this time, a notch is formed on the first baffle 181, a groove is formed on the inner wall of the cavity 111, and the notch and the groove correspond to each other and form the oil return hole 185 together.

When the compressor 100 is stopped, the pressure on the side of the outlet 15 of the muffler 10 is greater than the pressure on the side of the inlet 13 of the muffler 10, the lubricating oil is pressed to flow to the side of the inlet 13 through the oil return hole 185 due to the pressure difference inside the cavity 111 to be accumulated, when the accumulated oil is higher than the overflowing hole 171, the lubricating oil flows back into the compressor 100 through the rectifying pipe 17 and the inlet 13, so that the oil-containing mixed gas is prevented from being conveyed to a condenser through a pipeline, the oil-containing refrigerant influences condensation and evaporation heat transfer, the heat exchange efficiency is ensured, the compressor 100 can be lubricated in time, and the efficient and stable operation of the compressor 100 is ensured.

When the muffler 10 according to the third embodiment of the present application is subjected to a comparative sound-deadening test with an existing muffler (using only flared pipe), the test scheme is: introducing 1Mpa nitrogen at the inlet 13, and listening in the anechoic chamber; during the test, the existing silencer emits a harsh scouring sound, while the silencer 10 of the third embodiment of the present application emits a low-grade hissing sound; the acoustic power at a vertical distance of 0.5m from the tank of the existing muffler 10 is 39.8dB, while the acoustic power at a vertical distance of 0.5m from the tank of the present embodiment is 34.1 dB. The single body test results show that the muffler 10 of the present embodiment can effectively reduce noise when the compressor 100 discharges air.

When the muffler 10 according to the first embodiment of the present application and an existing muffler (only flared pipe) were subjected to a comparative oil return test, two types of mufflers were mounted on the same refrigerator prototype, and the R290 compressors 100 and 55gR290 were used to disassemble the mufflers and cut the mufflers after one-week operation. While a large amount of oil remains in the tank of the conventional muffler, the tank of the muffler 10 of the present embodiment has almost no oil remaining.

Fourth embodiment

Referring to fig. 7, the structure and functional effects of the muffler 10 of the present embodiment are substantially the same as those of the muffler 10 of the third embodiment, except that: the muffler 10 of this embodiment may further include an oil return capillary tube 19, where the oil return capillary tube 19 is disposed through a sidewall of the housing 11 and is used to communicate with the cavity 111 to output the returned oil. Specifically, the oil return capillary 19 is disposed outside the housing 11, i.e., outside the cavity 111, and communicates with the cavity 111 after penetrating through the sidewall of the housing 11. The oil return capillary tube 19 can return the lubricating oil to the compressor 100 to ensure timely lubrication and efficient and stable operation of the compressor 100. Compared with the oil return in the muffler 10 of the third embodiment, the oil return forces the lubricating oil to enter the rectifier tube 17 and then return to the compressor 100 by utilizing the pressure difference when the compressor 100 stops, the muffler 10 of the present application returns the lubricating oil to the compressor 100 by utilizing the oil return capillary tube 19, not only the return can be realized when the compressor 100 stops, but also the return can be realized when the compressor 100 works, the return is more sufficient, the compressor 100 can be ensured to be lubricated in time, and the efficient and stable operation of the compressor 100 is ensured.

Referring to fig. 8, a compressor 100 according to an embodiment of the present invention includes a housing 20 and a muffler 10 according to any one of the above embodiments, wherein the muffler 10 is installed in the housing 20. Therein, the compressor 100 may be a compressor 100 on any household appliance 1000, for example, a compressor 100 on a household appliance 1000 having a refrigeration system. More specifically, the compressor 100 may be the compressor 100 applied to a refrigerator, or may be the compressor 100 applied to an air conditioner, which is not limited herein.

Referring to fig. 1 and fig. 2, in the muffler 10 of the compressor 100 of the present application, the rectifying tube 17 extending into the cavity 111 is disposed at the inlet 13, and the rectifying tube 17 is disposed with a plurality of flow dividing holes 171, the plurality of flow dividing holes 171 can divide the exhaust gas into fine airflows, on one hand, the pulse noise can be effectively reduced; on the other hand, the momentum of the fine airflow is low, when the fine airflow collides with the shell 11, the separation of more refrigerants and lubricating oil is facilitated, when the compressor 100 stops, the pressure on one side of the outlet 15 of the silencer 10 is greater than the pressure on one side of the inlet 13 of the silencer 10, the lubricating oil can be accumulated on one side of the inlet 13 due to the fact that the pressure difference inside the cavity 111 is pressed, when the accumulated oil is higher than the overflow hole 171, the oil can flow back to the compressor 100 through the inlet 13, the oil-containing mixed gas can be prevented from being conveyed to a condenser through a pipeline, the oil-containing refrigerant influences condensation and evaporation heat transfer, the heat exchange efficiency is guaranteed, the compressor 100 can be guaranteed to be lubricated timely, and the efficient and stable operation of the compressor 100 is guaranteed.

Referring to fig. 9, a household appliance 1000 according to an embodiment of the present application includes the silencer 10 according to any one of the above embodiments. The household appliance 1000 may comprise any household appliance 1000 having a refrigeration system, such as a refrigerator, an air conditioner, and the like. The household appliance 1000 is described as an example of an air conditioner, and the household appliance 1000 further includes a compressor 100100, a condenser 200, an evaporator 300, a heat regenerator 400, a throttle member 500, a dew condensation preventing pipe 600, and a dry filter 700. The muffler 10 is disposed between the compressor 100100 and the condenser 200, and an inlet 13 is connected to a discharge port of the compressor 100 and an outlet 15 is connected to the condenser 200. At this time, the muffler 10 is conveniently replaced.

Referring to fig. 1 and fig. 2, in the muffler 10 of the household electrical appliance 1000 of the present application, the inlet 13 is provided with the rectifying tube 17 extending into the cavity 111, and the rectifying tube 17 is provided with a plurality of flow dividing holes 171, the plurality of flow dividing holes 171 can divide the exhaust gas into fine airflows, on one hand, the pulse noise can be effectively reduced; on the other hand, the momentum of the fine airflow is low, when the fine airflow collides with the shell 11, the separation of more refrigerants and lubricating oil is facilitated, when the compressor 100 stops, the pressure on one side of the outlet 15 of the silencer 10 is greater than the pressure on one side of the inlet 13 of the silencer 10, the lubricating oil can be accumulated on one side of the inlet 13 due to the fact that the pressure difference inside the cavity 111 is pressed, when the accumulated oil is higher than the overflow hole 171, the oil can flow back to the compressor 100 through the inlet 13, the oil-containing mixed gas can be prevented from being conveyed to a condenser through a pipeline, the oil-containing refrigerant influences condensation and evaporation heat transfer, the heat exchange efficiency is guaranteed, the compressor 100 can be guaranteed to be lubricated timely, and the efficient and stable operation of the compressor 100 is guaranteed.

Referring to fig. 10, a further household appliance 1000 according to an embodiment of the present application includes the compressor 100 according to the embodiment. The household appliance 1000 may comprise any household appliance 1000 comprising a refrigeration system, such as a refrigerator, an air conditioner, etc. The household appliance 1000 is an air conditioner, and the household appliance 1000 further includes a compressor 100100, a condenser 200, an evaporator 300, a heat regenerator 400, a throttle member 500, a dew condensation preventing pipe 600, and a dry filter 700. The muffler 10 is integrated inside the compressor 100100 and is a component of the compressor 100100, an inlet 13 is connected to a discharge port of the compressor 100, and an outlet 15 is connected to the condenser 200. In this case, the integration of the muffler 10 is high, and the installation space inside the refrigerator can be saved.

Referring to fig. 1 and fig. 2, in the muffler 10 of the household electrical appliance 1000 of the present application, the inlet 13 is provided with the rectifying tube 17 extending into the cavity 111, and the rectifying tube 17 is provided with a plurality of flow dividing holes 171, the plurality of flow dividing holes 171 can divide the exhaust gas into fine airflows, on one hand, the pulse noise can be effectively reduced; on the other hand, the momentum of the fine airflow is low, when the fine airflow collides with the shell 11, more refrigerants and lubricating oil are favorably separated, when the compressor 100 stops, the pressure on one side of the outlet 15 of the silencer 10 is greater than the pressure on one side of the inlet 13 of the silencer 10, the lubricating oil can flow to one side of the inlet 13 under pressure for accumulation because of the pressure difference inside the cavity 111, when the accumulated oil is higher than the overflowing hole 171, the oil can flow back to the compressor 100 through the inlet 13, so that the phenomenon that the oil-containing mixed gas is conveyed to the condenser through a pipeline, and the oil-containing refrigerants influence condensation and evaporation heat transfer is avoided, thereby ensuring the heat exchange efficiency, ensuring that the compressor 100 is lubricated in time, and ensuring the efficient and stable operation of the compressor 100.

In the description of the present specification, reference to the description of the terms "certain embodiments," "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

It is to be noted that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. The features defined as "first" and "second" may explicitly or implicitly include at least one feature. In the description of this application, "plurality" means at least two, and in one embodiment two, three, unless explicitly defined otherwise.

Although embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and not to be construed as limiting the present application and that those skilled in the art may make variations, modifications, substitutions and alterations to the above embodiments within the scope of the present application, which is defined by the claims and their equivalents.

Claims

1. A muffler, comprising:

the shell is provided with a cavity;

the inlet is arranged at the first end of the shell and is communicated with the interior of the cavity, a rectifying tube extending into the interior of the cavity is arranged at the inlet, and a plurality of shunting holes are formed in the rectifying tube; and

and the outlet is arranged at the second end of the shell and is communicated with the cavity.

2. The muffler of claim 1, wherein the first end is opposite the second end, and a center of the inlet is offset from a center of the outlet in a direction from the first end to the second end.

3. The muffler according to claim 2, wherein a center of the inlet is located lower than a center of the outlet in a radial direction of the housing.

4. The muffler of claim 1, wherein the orifice diameter of the branch hole is 0.5mm or more and 4mm or less.

5. The muffler of claim 1, further comprising:

at least one baffle plate, the baffle plate set up in the cavity and with have the clearance between the inner wall of cavity, the clearance supplies the fluid to pass through.

6. The muffler of claim 5 wherein the baffle is in a plurality, the plurality of baffles being staggered within the cavity to form a serpentine path between the baffle and the outlet.

7. The muffler of claim 6, wherein the housing includes a first side and a second side between the first end and the second end; a portion of the baffle extends from the first side toward the second side and forms the gap with the second side, and another portion of the baffle extends from the second side toward the first side and forms the gap with the first side.

8. The muffler of claim 7, wherein, in a case that the first side is a lower side of the housing, a joint of the baffle at the first side and an inner wall of the cavity is provided with an oil return hole, and the oil return hole is used for oil to pass through.

9. The muffler of any one of claims 1-8, further comprising:

and the oil return capillary tube penetrates through the side wall of the shell and is used for communicating the cavity to output the returned oil.

10. A compressor, comprising:

a housing; and

the muffler of any one of claims 1 to 9 mounted within the housing.

11. A household appliance, comprising:

the muffler of any one of claims 1-9; or

The compressor of claim 10.