Silencer with heat exchange function

Abstract

The utility model relates to the field of silencers, in particular to a silencer with a heat exchange function, which comprises a silencing pipe body, a heat exchange channel is formed in the silencing pipe body, one end of the silencing pipe body is provided with an air inlet and a refrigerant inlet, and the other end of the silencing pipe body is provided with an air outlet and a heating medium outlet. The two tail ends of the silencing pipe body are connected with a first butt joint pipe and a second butt joint pipe correspondingly, the first butt joint pipe communicates with the air inlet through an air inlet channel, the second butt joint pipe communicates with the air outlet through an air outlet channel, and a first-stage silencing channel is formed in the silencing pipe body; high-temperature compressed gas penetrates through the heat exchange channel from the gas inlet and is exhausted from the gas outlet, heat on the gas is attached to the interior of the heat exchange channel, heat in the heat exchange channel is absorbed through a refrigerant medium penetrating through the heat exchange channel from the refrigerant inlet, and the heat is exhausted from the heating medium outlet, so that the function of heat exchange between hot gas and refrigerant is achieved; the heat can be reasonably converted and applied, and waste of heat energy resources is reduced.

Description

Technical Field

[0001] The utility model relates to the field of mufflers, in particular to a muffler with heat exchange. Background Art

[0002] Muffler is a noise control device widely used in various mechanical equipment. Its main function is to reduce the noise generated during the operation of the equipment through a series of physical processes. Muffler plays an important role in many fields, including but not limited to mechanical equipment, automotive industry, aerospace, vacuum pumps and household appliances. During the operation of these equipment, noise will be generated due to mechanical movement, gas flow and other reasons, affecting the working environment and even the health of personnel. The introduction of muffler can effectively reduce the noise level of these equipment and improve the quality of the working environment.

[0003] In the application of vacuum pumps, silencers play an irreplaceable role. When the vacuum pump is running, the compressed flow of gas will generate high-frequency noise, which is a major interference to the working environment and users. Silencers are usually installed in existing vacuum pumps to reduce the noise output of the vacuum pump and improve the user experience.

[0004] The basic structure of an existing silencer usually includes an outer shell, internal noise reduction materials and a piping system. The outer shell is generally made of metal or plastic and has good structural strength and durability. The internal noise reduction material usually uses sound-absorbing cotton, foam plastic, etc., which can effectively absorb and reflect sound waves, thereby reducing noise. The piping system is responsible for guiding the airflow through the silencer, while changing the frequency and phase of the sound to further reduce noise.

[0005] However, in the silencer used in the existing vacuum pump, the airflow is compressed by the vacuum pump to generate hot vacuum gas, and the hot vacuum gas is subjected to noise reduction treatment after passing through the silencer. However, the existing silencer only has the function of noise reduction treatment for the hot vacuum gas, and the gas after noise reduction treatment is generally discharged directly. However, since the hot vacuum gas carries a relatively high amount of heat, the heat carried by the hot vacuum gas will also be discharged, which makes it difficult to perform reasonable heat exchange utilization, thereby affecting the recycling of resources. Utility Model Content

[0006] The purpose of the utility model is to solve the above defects and provide a silencer with heat exchange to solve the technical problem that the silencer in the above background technology only has the function of noise reduction for the gas carrying heat, and it is not easy to perform heat exchange and utilization for the heat carried in the gas, thus affecting resource recycling.

[0007] The purpose of the utility model is achieved by the following methods:

[0008] A silencer with heat exchange comprises a silencer tube body, a heat exchange channel is formed inside the silencer tube body, an air inlet and a refrigerant inlet are provided at one end of the silencer tube body, both the air inlet and the refrigerant inlet are communicated with the heat exchange channel, an air outlet and a heat medium outlet are provided at the other end of the silencer tube body, both the air outlet and the heat medium outlet are communicated with the heat exchange channel, two ends of the silencer tube body are respectively connected with a first butt joint tube and a second butt joint tube, the first butt joint tube is communicated with the air inlet through the air inlet channel, the second butt joint tube is communicated with the air outlet through the air outlet channel, and a first-level silencer channel which is communicated with both the air inlet and the air outlet is formed inside the silencer tube body.

[0009] Further in the above description, the first butt joint pipe and the silencer pipe body are perpendicular to each other, and the second butt joint pipe is coaxially connected to one end of the silencer pipe body.

[0010] Further in the above description, the first butt joint tube and the second butt joint tube are both sealed and connected to the corresponding end of the silencer tube body by a flange or a clamp, and a sealing gasket is used for the butt joint installation of the first butt joint tube and the second butt joint tube with the silencer tube body respectively. It can withstand high temperature and high pressure and can adapt to use under ultra-low temperature or vacuum. It has good sealing performance and is easy to use and install, which facilitates the noise reduction treatment of the gas through the first-level silencer channel of the silencer tube body.

[0011] In the above description, a heat exchange rod is connected to the heat exchange channel through a mounting part, and the heat exchange rod extends from the air inlet of the silencer body to the air outlet of the silencer body. The mounting part is provided with a mesh hole that is connected to the heat exchange channel, and the heat exchange rod is formed with evenly distributed fins by extrusion. The heat exchange rod is easy to install and can be directly inserted and installed in the heat exchange channel. The heat exchange rod is formed by aluminum extrusion, so that the heat dissipation area of ​​the heat exchange rod is larger and the heat dissipation effect is higher, so that the heat on the hot gas is conveniently attached to the heat exchange rod, so that the introduced cold medium absorbs the heat on the heat exchange rod through the heat exchange channel and is exported from the heat medium outlet, thereby reasonably recycling the heat, saving the waste of thermal energy resources, and making the hot gas form cold gas and enter the next process from the outlet.

[0012] Further in the above description, the heat exchange rod is cylindrical or square columnar.

[0013] In the above description, one end of the second butt joint far from the silencer body is connected to a secondary silencer through a connecting pipe, the second butt joint and the connecting pipe are both connected to the secondary silencer, a secondary silencer channel is formed inside the secondary silencer, and an exhaust port connected to the secondary silencer channel is provided on the secondary silencer, so that the cold gas enters the secondary silencer, and the secondary silencer channel performs secondary silencer and noise reduction treatment on the cold gas, further reducing the emission of noise, thereby facilitating the discharge of the cold gas through the exhaust port.

[0014] Further in the above description, the secondary silencer is connected to a partition away from the exhaust port, and the secondary silencer is connected to a mounting plate near the exhaust port, the mounting plate and the exhaust port form an exhaust end, the partition is provided with a through hole connected to the secondary silencer channel, an inner silencer is connected between the partition and the mounting plate, and both the partition and the mounting plate are provided with slots connected to the inner silencer, and the exhaust end is connected to the secondary silencer channel through the inner silencer. When the cold gas enters the secondary silencer channel, a guide noise reduction is formed inside it, so that the cold gas passes through the through hole on the partition and the slot on the partition into the inner silencer, and further reduces noise and silences through the noise reduction material (sound-absorbing cotton or foam plastic, etc.) on the inner silencer, thereby enhancing the silencer effect of the silencer and reducing noise emissions.

[0015] The beneficial effects of the utility model are as follows: through the heat exchange channel formed inside the silencer pipe body, the air inlet and the refrigerant inlet are both connected to the heat exchange channel, and the air outlet and the heat medium outlet are both connected to the heat exchange channel, so that the high-temperature compressed gas passes through the heat exchange channel from the air inlet and is discharged from the air outlet, and the heat on the gas adheres to the heat exchange channel, passes through the heat exchange channel from the refrigerant inlet through the refrigerant medium to absorb the internal heat, and is discharged from the heat medium outlet, thereby realizing the heat exchange function between the hot gas and the refrigerant, effectively utilizing the exhaust heat of the hot gas, and transferring it to the refrigerant medium for heating, so that its heat can be reasonably converted and utilized, reducing the waste of thermal energy resources, and can also reduce the exhaust temperature through heat exchange, thereby improving the overall operating efficiency. At the same time, a first-level silencer channel connected to the air inlet and the air outlet is formed inside the silencer pipe body, which can effectively reduce noise emissions. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the structure of the silencer pipe body in this embodiment;

[0017] Figure 2 Schematic diagram of the internal structure of this embodiment;

[0018] Figure 3 is a cross-sectional view of this embodiment;

[0019] Figure 4 Schematic diagram of the connection structure of the heat exchange rods in this embodiment;

[0020] Figure 5 Schematic diagram of the connection structure of the secondary silencer in this embodiment;

[0021] Figure 6 This is a schematic diagram of the connection structure in the use state of this embodiment;

[0022] The reference numerals in the figure are: 1-silencer body, 2-heat exchange channel, 3-air inlet, 4-refrigerant inlet, 5-air outlet, 6-heat medium outlet, 7-first butt joint, 8-second butt joint, 9-air inlet channel, 10-air outlet channel, 11-first-level silencer channel, 12-mounting part, 13-heat exchange rod, 14-connecting pipe, 15-second-level silencer, 16-second-level silencer channel, 17-exhaust port, 18-partition, 19-mounting plate, 20-exhaust end, 21-through hole, 22-internal silencer, 23-slot hole, 24-vacuum pump, 25-pump body. DETAILED DESCRIPTION

[0023] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0024] In this embodiment, refer to Figure 1-Figure 6 The specifically implemented muffler with heat exchange comprises a muffler body 1, a heat exchange channel 2 is formed inside the muffler body 1, an air inlet 3 and a refrigerant inlet 4 are provided at one end of the muffler body 1, the air inlet 3 and the refrigerant inlet 4 are both communicated with the heat exchange channel 2, an air outlet 5 and a heat medium outlet 6 are provided at the other end of the muffler body 1, the air outlet 5 and the heat medium outlet 6 are both communicated with the heat exchange channel 2, the two ends of the muffler body 1 are respectively connected with a first butt joint pipe 7 and a second butt joint pipe 8, the first butt joint pipe 7 is communicated with the air inlet 3 through the air inlet channel 9, the second butt joint pipe 8 is communicated with the air outlet 5 through the air outlet channel 10, and a first-level muffler channel 11 which is communicated with both the air inlet 3 and the air outlet 5 is formed inside the muffler body 1.

[0025] The first butt joint pipe 7 is perpendicular to the silencer pipe body 1, and the second butt joint pipe 8 is coaxially connected to one end of the silencer pipe body 1. The first butt joint pipe 7 and the second butt joint pipe 8 are both sealed and connected to the corresponding end of the silencer pipe body 1 through a flange or a clamp, and a sealing gasket is used for the butt joint installation of the first butt joint pipe 7 and the second butt joint pipe 8 with the silencer pipe body 1, respectively. It can withstand high temperature and high pressure and adapt to use under ultra-low temperature or vacuum, has good sealing performance, and is easy to use and install, which is convenient for gas to pass through the primary silencer channel 11 of the silencer pipe body 1 for noise reduction treatment.

[0026] A heat exchange rod 13 is connected to the heat exchange channel 2 through a mounting member 12. The heat exchange rod 13 extends from the air inlet 3 of the muffler body 1 to the air outlet 5 of the muffler body 1. The mounting member 12 is provided with mesh holes that are in communication with the heat exchange channel 2. The heat exchange rod 13 is formed with evenly distributed fins through extrusion. The heat exchange rod 13 is easy to install and can be directly inserted and installed in the heat exchange channel 2. The heat exchange rod 13 is formed by aluminum extrusion, so that the heat dissipation area of ​​the heat exchange rod 13 is larger and the heat dissipation effect is higher. It is convenient to attach the heat on the hot gas (high-temperature steam or high-temperature compressed air) to the heat exchange rod 13, so that the introduced cold medium absorbs the heat on the heat exchange rod 13 through the heat exchange channel 2 and is exported from the heat medium outlet 6, thereby reasonably recycling the heat, saving the waste of thermal energy resources, and making the hot gas form cold gas and enter the next process from the air outlet 5. The heat exchange rod 13 is cylindrical.

[0027] In this embodiment, one end of the second butt joint pipe 8 away from the silencer pipe body 1 is connected to a secondary silencer 15 through a connecting pipe 14, and the second butt joint pipe 8 and the connecting pipe 14 are all in communication with the secondary silencer 15, a secondary silencer channel 16 is formed inside the secondary silencer 15, and an exhaust port 17 communicating with the secondary silencer channel 16 is provided on the secondary silencer 15. The cold gas enters the secondary silencer 15, and the cold gas is subjected to secondary silencer and noise reduction treatment through the secondary silencer channel 16, so as to further reduce the emission of noise, thereby facilitating the cold gas to be discharged through the exhaust port 17.

[0028] In this embodiment, the interior of the secondary muffler 15 away from the exhaust port 17 is connected with a partition 18, and the interior of the secondary muffler 15 close to the exhaust port 17 is connected with a mounting plate 19, the mounting plate 19 and the exhaust port 17 form an exhaust end 20, the partition 18 is provided with a through hole 21 connected to the secondary muffler channel 16, an inner muffler 22 is connected between the partition 18 and the mounting plate 19, and the partition 18 and the mounting plate 19 are both provided with a slot 23 connected to the inner muffler 22, and the exhaust end 20 is connected to the secondary muffler channel 16 through the inner muffler 22. When the cold gas enters the secondary muffler channel 16, a guide noise reduction is formed inside it, so that the cold gas passes through the through hole 21 on the partition 18 and the slot 23 on the partition 18 into the inner muffler 22, and further reduces noise and silences through the noise reduction material (sound-absorbing cotton or foam plastic, etc.) on the inner muffler 22, thereby enhancing the muffler effect and reducing noise emission.

[0029] The specific heat exchange process in this embodiment is as follows: the first butt joint pipe 7 is connected to the pump body 25 in the vacuum pump 24, the air inlet 3 of the muffler pipe body 1 is butt-connected with the air inlet channel 9 of the first butt joint pipe 7 through a flange, the air outlet 5 of the muffler pipe body 1 is connected to the second butt joint pipe 8 through a flange, the second butt joint pipe 8 extends to the outer side of the vacuum pump 24 and is connected to the connecting pipe 14, so that the connecting pipe 14 is connected to the external secondary muffler 15;

[0030] When the vacuum pump 24 is running, the pump body 25 compresses the gas, so that the compressed high-temperature compressed air passes through the first butt joint 7, enters the heat exchange channel 2 from the air inlet 3, and is discharged from the air outlet 5. The heat on the gas adheres to the heat exchange rod 13 inside the heat exchange channel 2. At this time, the refrigerant medium (cooling water) passes through the heat exchange channel 2 from the refrigerant inlet 4 and contacts the heat exchange rod 13, and absorbs the heat on the heat exchange rod 13 to achieve heat exchange. The cooling water will heat up and be discharged through the heat medium outlet 6 or reflux into the cooling tower. The gas will cool down accordingly. When the gas is undergoing heat exchange, a first-level silencing and noise reduction is generated for discharge or recovery into the air storage tank.

[0031] At the same time, the cooled gas enters the secondary silencer channel 16 of the secondary silencer 15 through the second docking pipe 8, and then passes through the through hole 21 on the partition 18 and enters the inner silencer 22 through the slot 23 on the partition 18 connected to the inner silencer 22, further reducing noise and silencing the gas, and is discharged from the exhaust port 17 through the exhaust end 20, thereby enhancing the silencing effect of the silencer, reducing noise emissions, and lowering the exhaust temperature through heat exchange, thereby improving overall operating efficiency, and enhancing practicality and flexibility.

[0032] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model is disclosed as a preferred embodiment as above, it is not used to limit the utility model. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content disclosed above without departing from the scope of the technical solution of the utility model. However, any simple modification, equivalent change and modification made to the above embodiments according to the technology of the utility model, which does not depart from the content of the technical solution of the utility model, belongs to the scope of the technical solution of the utility model.

Claims

1. A muffler with heat exchange, comprising a muffler pipe body, wherein a heat exchange channel is formed inside the muffler pipe body, and characterized in that: One end of the silencer tube body is provided with an air inlet and a refrigerant inlet, both of which are communicated with the heat exchange channel; the other end of the silencer tube body is provided with an air outlet and a heat medium outlet, both of which are communicated with the heat exchange channel; the two ends of the silencer tube body are respectively connected with a first butt joint tube and a second butt joint tube, the first butt joint tube is communicated with the air inlet through the air inlet channel, and the second butt joint tube is communicated with the air outlet through the air outlet channel; a first-level silencer channel which is communicated with both the air inlet and the air outlet is formed inside the silencer tube body.

2. The muffler with heat exchange according to claim 1, characterized in that: The first butt joint pipe and the muffler pipe body are perpendicular to each other, and the second butt joint pipe is coaxially connected to one end of the muffler pipe body.

3. The muffler with heat exchange according to claim 1, characterized in that: The first butt joint pipe and the second butt joint pipe are both sealed and connected to the corresponding end of the muffler pipe body through a flange or a clamp.

4. The muffler with heat exchange according to claim 1, characterized in that: The interior of the heat exchange channel is connected to a heat exchange rod via a mounting piece, the heat exchange rod extends along the air inlet of the silencer body to the air outlet of the silencer body, the mounting piece is provided with mesh holes that are connected to the heat exchange channel, and the heat exchange rod is formed with evenly distributed fins by extrusion.

5. The muffler with heat exchange according to claim 4, characterized in that: The heat exchange rod is cylindrical or square column-shaped.

6. The muffler with heat exchange according to any one of claims 1 to 5, characterized in that: One end of the second butt joint pipe away from the silencer body is connected to the secondary silencer through a connecting pipe. The second butt joint pipe and the connecting pipe are both connected to the secondary silencer. A secondary silencer channel is formed inside the secondary silencer, and an exhaust port connected to the secondary silencer channel is provided on the secondary silencer.

7. The muffler with heat exchange according to claim 6, characterized in that: The interior of the secondary silencer away from the exhaust port is connected to a partition, and the interior of the secondary silencer close to the exhaust port is connected to a mounting plate, the mounting plate and the exhaust port form an exhaust end, a through hole connected to the secondary silencer channel is opened on the partition, an inner silencer is connected between the partition and the mounting plate, and slots connected to the inner silencer are opened on the partition and the mounting plate, and the exhaust end is connected to the secondary silencer channel through the inner silencer.

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