A muffler, compressor and refrigeration apparatus

Abstract

The application discloses a muffler, a compressor and a refrigeration device, which comprises a shell, a connector and a gas guide pipe. The shell comprises a first shell and a second shell, the first shell is connected with the second shell, and an air suction muffling cavity is defined in the shell. The first shell is provided with a connector mounting hole extending from the outside of the shell to the air suction muffling cavity. The connector has a tubular structure, the tubular structure is inserted into the connector mounting hole from the outside of the shell, the tubular structure has a positioning part extending into the air suction muffling cavity, an inner end port is formed on the end face of the positioning part, and the positioning part is provided with a positioning hole. The gas guide pipe extends from a first port to a second port in the length direction, the gas guide pipe is mounted on at least one of the first shell and the second shell, the first port is butted with the inner end port, the gas guide pipe is provided with a latch, and the latch is inserted into the positioning hole to lock the positioning part on the gas guide pipe. The technical scheme of the application has the characteristics of few parts, simple structure and strong sealing performance.

Description

Technical Field

[0001] This invention relates to the field of compressors, and in particular to a muffler, compressor, and refrigeration equipment. Background Technology

[0002] Refrigerator compressors typically use an electric motor to drive a crank-connecting rod mechanism to compress the refrigerant and increase its pressure. During operation, the motor core generates a significant amount of heat; simultaneously, the refrigerant compression process also generates considerable heat. This heat accumulates inside the compressor casing, resulting in extremely high temperatures for the gas inside.

[0003] A refrigerator compressor consists of a lower casing, an upper casing, and a compressor core. The compressor core includes components such as an intake muffler, a motor, moving parts, and a cylinder head. The intake muffler corresponds to the intake pipe of the lower casing. When the compressor draws refrigerant from the refrigeration system, the low-temperature refrigerant gas flows through the intake pipe of the lower casing, enters the casing, mixes with the high-temperature refrigerant inside, enters the intake muffler, and is then compressed by the piston before being delivered to the exhaust system.

[0004] When low-temperature refrigerant mixes with high-temperature refrigerant inside the casing, it causes the compressor suction to overheat, significantly reducing suction efficiency, cooling capacity, and COP. To prevent suction overheating, a connector is usually installed on the suction muffler. This type of suction method is also known as direct suction.

[0005] Connectors are typically made of flexible rubber materials, which can help to mitigate rigid impacts and prevent them from breaking or failing upon collision.

[0006] Connectors made of rubber are in constant contact with refrigeration oil and refrigerant during compressor operation, and are prone to aging and expansion under high temperatures. This can cause them to easily detach from the suction muffler. Therefore, large compressors use elastic clips to secure the connectors to the suction muffler inlet.

[0007] As compressor designs become increasingly compact and compressor housings shrink, so do intake mufflers, leaving no extra space for traditional connectors. This necessitates directly drilling holes in the intake muffler wall to install the connector. However, ensuring a reliable and airtight connection between the connector and the muffler is difficult, leading to gas leaks, overheating during intake, and eventually, connector loosening and falling off after prolonged operation. Summary of the Invention

[0008] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide a muffler, compressor and refrigeration equipment.

[0009] The technical solution adopted by this invention to solve its technical problem is:

[0010] Firstly, a silencer includes:

[0011] The housing includes a first housing and a second housing, the first housing being connected to the second housing and defining an intake silencing cavity inside, the first housing having a connector mounting hole extending from the outside of the housing to the intake silencing cavity;

[0012] A connector having a tubular structure, the tubular structure being inserted into the connector mounting hole from the outside of the housing, the tubular structure having a positioning part extending into the interior of the intake silencer cavity, the tubular structure forming an inner end port on the end face of the positioning part, the positioning part being provided with a positioning hole;

[0013] An air guide tube extends along its length from a first port to a second port. The air guide tube is installed in at least one of the first housing and the second housing, and the first port is aligned with the inner port. The air guide tube is provided with a pin, which is inserted into the positioning hole to lock the positioning part in the air guide tube.

[0014] In conjunction with the first aspect, in some implementations of the first aspect, the connector mounting hole is disposed on the first wall surface of the first housing, the second wall surface of the first housing is provided with a positioning groove at the inner side of the connector mounting hole, and the air guide tube is provided with a positioning boss along the extension direction of the pin, the positioning boss being fitted into the positioning groove.

[0015] In combination with the first aspect and the above-described implementations, in some implementations of the first aspect, the positioning groove and the positioning boss have non-circular cross sections that cooperate with each other.

[0016] In combination with the first aspect and the above-described implementations, in some implementations of the first aspect, the air guide tube extends in the opposite direction of the positioning boss and forms a second port at its end. The second housing is provided with a pressing surface that presses against the second port. The end wall of the air guide tube is provided with a plurality of spaced air outlet grooves along the circumference of the air guide tube.

[0017] In combination with the first aspect and the above-described implementations, in some implementations of the first aspect, the positioning part has a first inclined surface, the inner end port is formed on the first inclined surface, the air guide tube has a second inclined surface, the first port is formed on the second inclined surface, and the first inclined surface and the second inclined surface cooperate with each other and are both inclined along the extension direction of the pin.

[0018] In combination with the first aspect and the above-described implementations, in some implementations of the first aspect, the pin has a third inclined surface, which is inclined along the extension direction of the pin. The third inclined surface is used to cooperate with the positioning hole and to press the positioning part against the air guide tube when inserted into the positioning hole.

[0019] In combination with the first aspect and the above-described implementations, in some implementations of the first aspect, the positioning hole includes a first positioning hole and a second positioning hole, the first positioning hole and the second positioning hole are mirror-distributed on both sides of the internal tube hole of the positioning part, and the pin includes a first pin that is inserted into the first positioning hole and a second pin that is inserted into the second positioning hole.

[0020] In combination with the first aspect and the above-described implementations, in some implementations of the first aspect, the tubular structure has a mounting portion with a contracted outer diameter, a positioning step is formed between the mounting portion and the positioning portion, the mounting portion mates with the connector mounting hole, and the outer end of the connector is provided with a flared structure, the flared structure having a conical surface that mates with the first housing.

[0021] The second aspect is a compressor that includes the muffler described in any implementation of the first aspect.

[0022] Thirdly, a refrigeration device comprising a compressor as described in any implementation of the second aspect.

[0023] One of the above technical solutions has at least one of the following advantages or beneficial effects: In the assembly of the present invention, after the connector is inserted into the first housing through the mounting hole, the air guide pipe and the second housing are then assembled. When assembling the air guide pipe, the pin of the air guide pipe is inserted into the positioning hole of the connector, thereby locking the positioning part in the air guide pipe and preventing leakage. The technical solution of the present invention has the characteristics of fewer parts, simple structure, and strong sealing. The pin ensures a tight fit between the connector and the outer wall of the first housing, and between the connector and the end face of the air guide pipe, preventing gas leakage and thus avoiding overheating of the compressor intake, effectively improving the compressor's cooling capacity and COP. Simultaneously, the present invention also features reliable connection. Even if the connector ages and the material expands after long-term use, it cannot loosen or fall out of the muffler; it will be fixed by the pin on the connector, forming a reverse anti-loosening function.

[0024] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0025] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0026] Figure 1 This is an exploded view of an embodiment of the silencer of the present invention;

[0027] Figure 2 yes Figure 1 The diagram shows a schematic of the air duct structure in one embodiment.

[0028] Figure 3 yes Figure 1 A schematic diagram of a connector structure of one embodiment is shown;

[0029] Figure 4 yes Figure 1 A cross-sectional view of the connector structure of one embodiment is shown;

[0030] Figure 5 This is a schematic diagram of the structure of an embodiment of the compressor of the present invention. Detailed Implementation

[0031] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0032] In this invention, when directions (up, down, left, right, front, and back) are described, it is only for the convenience of describing the technical solution of this invention, and does not indicate or imply that the technical features referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this invention.

[0033] In this invention, "several" means one or more, "multiple" means two or more, "greater than," "less than," "exceeding," etc., are understood to exclude the stated number; "above," "below," "within," etc., are understood to include the stated number. In the description of this invention, the terms "first" and "second" are used only to distinguish technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0034] In this invention, unless otherwise explicitly defined, the terms "setting," "installing," and "connecting" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; a fixed connection, a detachable connection, or an integrally formed connection; a mechanical connection, an electrical connection, or a connection capable of mutual communication; or the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this invention based on the specific content of the technical solution.

[0035] See Figures 1-4 An embodiment of the present invention provides a muffler, including a housing 100, a connector 200, and an air duct 300. The housing 100 includes a first housing 101 and a second housing 102. The first housing 101 is connected to the second housing 102 and defines an intake muffler 103 inside. The first housing 101 is provided with a connector mounting hole 104 extending from the outside of the housing 100 to the intake muffler 103. The connector mounting hole 104 is used to install a connector 200 to introduce refrigerant into the intake muffler 103, and after muffler treatment, it is discharged from the outlet 108.

[0036] The connector 200 can be made of flexible rubber or other materials. The connector 200 has a tubular structure. The tubular structure is inserted into the connector mounting hole 104 from the outside of the housing 100. The tubular structure has a positioning part 201 that extends into the air intake silencer cavity 103. In other words, the tubular structure runs through the entire connector mounting hole 104. The tubular structure forms an inner end port 202 at the end face of the positioning part 201. The positioning part 201 is provided with a positioning hole 203. The positioning hole 203 forms a certain angle with the inner end port of the tubular structure.

[0037] The vent pipe 300 extends along its length from the first port 301 to the second port 302. The vent pipe 300 is installed on at least one of the first housing 101 and the second housing 102, with the first port 301 aligned with the inner end port 202. Refrigerant introduced by the connector 200 is further introduced into the first port 301 of the vent pipe 300 through the inner end port 202, and finally discharged through the second port 302 and enters the intake silencer chamber 103. The vent pipe 300 is equipped with a pin 303, which is inserted into the positioning hole 203 to lock the positioning part 201 onto the vent pipe 300.

[0038] Combination Figures 1-4In the muffler assembly of this invention, the connector 200 is inserted into the first housing 101 through the mounting hole, followed by the assembly of the air duct 300 and the second housing 102. When assembling the air duct 300, the pin 303 of the air duct 300 is inserted into the positioning hole 203 of the connector 200, thereby locking the positioning part 201 to the air duct 300 and preventing leakage. This invention features fewer parts, a simpler structure, and stronger sealing. The pin 303 ensures a tight fit between the connector 200 and the outer wall of the first housing 101, and between the connector 200 and the end face of the air duct 300, preventing gas leakage and thus avoiding overheating of the compressor intake, effectively improving the compressor's cooling capacity and COP. Furthermore, this invention features reliable connection. Even if the connector 200 ages and expands after long-term use, it will not fall out of the muffler; it will be fixed by the pin 303, providing a reverse anti-loosening function.

[0039] In some embodiments, see Figure 1 , Figure 2 , Figure 4 The connector mounting hole 104 is located on the first wall surface 105 of the first housing 101. The second wall surface 106 of the first housing 101 has a positioning groove 107 inside the connector mounting hole 104. The air guide tube 300 has a positioning boss 304 extending along the pin 303, and the positioning boss 304 is fitted into the positioning groove 107. When assembling the air guide tube 300, the positioning boss 304 at the bottom of the air guide tube 300 is inserted into the positioning groove 107 of the first housing 101. At this time, the pin 303 is inserted into the positioning hole 203 of the connector 200.

[0040] Further, see Figure 1 , Figure 2 The positioning groove 107 and the positioning boss 304 have non-circular cross sections that cooperate with each other. The use of non-circular cross sections plays a directional role, ensuring that the first port 301 of the air guide tube 300 can be quickly and accurately adapted to the inner port 202 of the connector 200.

[0041] See Figure 1 , Figure 2 , Figure 4 The air guide tube 300 extends in the opposite direction of the positioning boss 304 and forms a second port 302 at the end. The second housing 102 is provided with a pressing surface 108 that presses against the second port 302. After the air guide tube 300 is assembled, the second housing 102 is finally installed. The second housing 102 presses the upper end face of the air guide tube 300 with the pressing surface 108 to prevent the air guide tube 300 from loosening.

[0042] The end wall of the air duct 300 is provided with multiple spaced air outlet grooves 305 along the circumference of the air duct 300, which serve to facilitate airflow.

[0043] In some embodiments, see Figure 3 , Figure 4 The positioning part 201 has a first inclined surface 204, and the inner end port 202 is formed on the first inclined surface 204. The air guide tube 300 has a second inclined surface 305, and the first end port 301 is formed on the second inclined surface 307. The first inclined surface 204 and the second inclined surface 307 cooperate with each other and are both inclined along the extension direction of the pin 303. During the process of inserting the pin 303 into the positioning hole 203 of the connector 200, the first inclined surface 204 at the end of the connector 200 cooperates with the second inclined surface 307 at the inlet of the air guide tube 300 to prevent leakage.

[0044] Further, see Figure 2 The pin 303 has a third inclined surface 306, which is inclined along the extension direction of the pin 303, and is wider at the top and narrower at the bottom. The third inclined surface 306 is used to cooperate with the positioning hole 203, and when inserted into the positioning hole 203, it presses the positioning part 201 against the air duct 300. When the pin 303 is inserted into the positioning hole 203 of the connector 200, because the side of the pin 303 is inclined, it will push the connector 200 to move into the muffler, pressing the inclined end of the connector 200 against the inclined end face of the air duct 300 inlet, further preventing leakage.

[0045] Positioning holes 203 may be provided in one or more forms, as described in some embodiments. Figure 3 The positioning hole 203 includes a first positioning hole and a second positioning hole, which are mirror-distributed on both sides of the internal tube hole of the positioning part 201. The pin 303 corresponds to the positioning hole 203 and includes a first pin that inserts into the first positioning hole and a second pin that inserts into the second positioning hole. In this embodiment, by using two sets of mirror-arranged pins 303 in conjunction with the positioning hole 203, a locking force can be evenly applied from both sides of the connector 200, ensuring a tight fit between the connector 200 and the air duct 300 and preventing refrigerant leakage due to uneven force. Simultaneously, the use of two sets of mirror-arranged pins 303 in conjunction with the positioning hole 203 further improves the reliability of the connection; even if the connector 200 ages and the material expands after long-term use, it will not loosen or fall out of the muffler.

[0046] In some embodiments, see Figure 3 , Figure 4The tubular structure has a tapered mounting portion 205, and a positioning step 206 is formed between the mounting portion 205 and the positioning portion 201. The positioning step 206 further confines the connector 200 to the housing 100, thereby providing better connection reliability. The mounting portion 205 mates with the connector mounting hole 104. The outer end of the connector 200 is provided with a flared structure 207, and the back side of the flared structure 207 has a tapered surface 208 that mates with the first housing 101. The pin 303 is inserted into the positioning hole 203 of the connector 200, and the tapered surface 208 in the middle of the connector 200 is also pressed tightly against the outer wall of the first housing 101 to prevent leakage.

[0047] See Figure 5 Embodiments of the present invention also provide a compressor including the muffler from any of the above embodiments. The muffler connector 200 is tightly attached to the inner wall of the first housing 101, covering the suction pipe port, thereby improving the compressor's suction efficiency, cooling capacity, and COP.

[0048] Embodiments of the present invention also provide a refrigeration device, including the compressor in any of the above embodiments.

[0049] In the description of this specification, references to terms such as "example," "embodiment," or "some embodiments" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0050] Of course, the present invention is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A silencer, characterized in that, include: The housing includes a first housing and a second housing, the first housing being connected to the second housing and defining an intake silencing cavity inside, the first housing having a connector mounting hole extending from the outside of the housing to the intake silencing cavity; A connector having a tubular structure, the tubular structure being inserted into the connector mounting hole from the outside of the housing, the tubular structure having a positioning part extending into the interior of the intake silencer cavity, the tubular structure forming an inner end port on the end face of the positioning part, the positioning part being provided with a positioning hole; An air guide tube extends along its length from a first port to a second port. The air guide tube is installed in at least one of a first housing and a second housing, with the first port abutting against the inner port. The air guide tube has a pin inserted into a positioning hole to lock the positioning part in the air guide tube. A connector mounting hole is provided on a first wall of the first housing, and a positioning groove is provided on a second wall of the first housing inside the connector mounting hole. The air guide tube has a positioning boss along the extension direction of the pin, which is fitted into the positioning groove. The positioning part has a first inclined surface, and the inner port is formed on the first inclined surface. The air guide tube has a second inclined surface, and the first port is formed on the second inclined surface. The first and second inclined surfaces cooperate with each other and are both inclined along the extension direction of the pin. The pin has a third inclined surface, which is inclined along the extension direction of the pin and is used to cooperate with the positioning hole, pressing the positioning part against the air guide tube when inserted into the positioning hole.

2. The silencer according to claim 1, characterized in that, The positioning groove and the positioning boss have non-circular cross sections that cooperate with each other.

3. The silencer according to claim 1, characterized in that, The air guide tube extends in the opposite direction of the positioning boss and forms a second pipe opening at the end. The second housing is provided with a pressing surface that presses against the second pipe opening. The end wall of the air guide tube is provided with a plurality of spaced air outlet grooves along the circumference of the air guide tube.

4. The silencer according to claim 1, characterized in that, The positioning hole includes a first positioning hole and a second positioning hole, which are mirror-distributed on both sides of the internal tube hole of the positioning part. The pin includes a first pin that is inserted into the first positioning hole and a second pin that is inserted into the second positioning hole.

5. The silencer according to claim 1, characterized in that, The tubular structure has a mounting portion with a tapered outer diameter, and a positioning step is formed between the mounting portion and the positioning portion. The mounting portion mates with the connector mounting hole, and the outer end of the connector is provided with a flared structure, which has a conical surface that mates with the first housing.

6. A compressor, characterized in that, The silencer includes any one of claims 1 to 5.

7. A refrigeration device, characterized in that, Includes the compressor described in claim 6.

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