Silencer structure with replaceable air inlet and outlet head

Abstract

The utility model discloses a silencer structure with replaceable air inlet and outlet heads, which comprises a silencer box and a silencer cover, the top end of the silencer cover is connected with a detachable air outlet head, and one side edge of the silencer cover is provided with a detachable air inlet head; an air outlet head connector is arranged at the top end of the silencer cover, a plurality of clamping blocks are arranged on the outer side of the air outlet head connector in the circumferential direction, an air inlet head connector is arranged on one side edge of the silencer cover, a plurality of clamping blocks are arranged on the outer side of the air inlet head connector in the circumferential direction, and the tip ends of the clamping blocks face the inner cavity of the silencer. A plurality of clamping pieces are arranged at the joint of the air inlet head and the air outlet head in the circumferential direction, and clamping holes are formed in the bottom ends of the clamping pieces. By arranging the clamping block and the clamping piece, the air inlet head and the air outlet head can be replaced and detached, the replaceability and standardization are improved while the silencing effect of an existing silencer is not changed, the production cost is reduced, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of compressor, specifically a sound damper structure with replaceable inlet and outlet air heads. BACKGROUND

[0002] The refrigerator compressor is driven by a motor to drive a piston to make gas enter from a suction pipe, pass through a valve group to finally enter a cylinder, and then the motor drives to compress the gas in the cylinder, pass through the valve group and an exhaust pipe to finally leave the compressor through an exhaust hole. In the process of gas entering the cylinder, it needs to pass through the sound damper, suction valve piece, valve plate suction hole, etc. in the valve group in turn. The role of the sound damper is to reduce the noise generated by airflow when the compressor is in the suction working state, and to increase the suction efficiency of the compressor by matching the shapes of the compressor suction pipe and the sound damper inlet head, the shape of the sound damper outlet head and the valve plate suction hole, and reasonable airflow path planning in the sound damper.

[0003] Due to different shapes of the cavity of the refrigerator compressor, the valve plate suction hole, and the matching sound damper inlet and outlet heads, the sound damper box body part is similar. In the sound damper manufacturing process, different sound dampers need to be frequently replaced by molds for injection molding, which affects the preparation efficiency. In the compressor production process, if the sound damper is matched incorrectly, it will affect the refrigeration capacity, efficiency, noise, and other performances of the compressor.

[0004] Chinese patent publication number CN117386583A, published on January 12, 2024, discloses an invention named sound damping structure and compressor. The invention discloses a sound damping structure, which includes a main body part and a communication part. The main body part has a sound damping cavity, a suction port, and an exhaust port connected to the sound damping cavity. The communication part is located in the sound damping cavity and includes an air channel. The inlet end and the outlet end of the air channel are connected to the sound damping cavity. The inlet head and the outlet head of the invention are fixedly connected to the sound damper box body. When replacing different models of refrigerator compressors, the sound damper cannot be used, and different sound dampers need to be made by replacing molds, which increases the cost and affects the preparation efficiency. UTILITY MODEL CONTENTS

[0005] The utility model provides a sound damper structure with replaceable inlet and outlet air heads. By setting the clamping block and the clamping piece, the replaceability and detachability of the inlet head and the outlet head are realized. The replaceability and standardization are improved without changing the sound damping effect of the existing sound damper, the production cost is reduced, and the production efficiency is improved.

[0006] In order to achieve the above object, the utility model discloses the following technical scheme: a replaceable inlet and outlet gas head's silencer structure, including silencer box and silencer cover, the top of silencer cover is connected with the detachable gas outlet, and one side is equipped with the detachable air inlet; The top of silencer cover is equipped with gas outlet interface, and the outer side of gas outlet interface is equipped with a plurality of clamping blocks circumferentially, and one side of silencer cover is equipped with air inlet interface, and the outer side of air inlet interface is equipped with a plurality of clamping blocks circumferentially, and the cross section of clamping block is trapezoidal; The outer side of air inlet and gas outlet bottom is equipped with a plurality of clamping pieces circumferentially, and the bottom of clamping piece is equipped with clamping hole.

[0007] Preferably, the silencer cover and the silencer box are provided with a slot on the interface, and the slot is arranged on the periphery of the inner cavity of the silencer cover. By setting the slot, the connection stability of the silencer cover and the silencer box can be improved, the vibration and noise can be reduced, and the convenience of maintenance and replacement can be improved.

[0008] Preferably, the silencer cover and the silencer box are provided with a slot on the interface, and the slot is arranged on the periphery of the inner cavity of the silencer cover. By setting the slot, the connection stability of the silencer cover and the silencer box can be improved, the vibration and noise can be reduced, and the convenience of maintenance and replacement can be improved.

[0009] Preferably, the air inlet interface is arranged on the air inlet interface mounting seat, and the gas outlet interface is arranged on the gas outlet interface mounting seat. This design makes the installation of the air inlet interface and the gas outlet interface more stable, reduces the wear caused by vibration, and facilitates the maintenance and replacement of the interface, thereby improving the reliability and durability of the entire silencer. The slot is also arranged on the air inlet interface mounting seat and the gas outlet structure mounting seat. The gas outlet interface mounting seat is arranged at the left side of the top of the silencer cover, and the air inlet interface is arranged on the side close to the gas outlet interface mounting seat, that is, the left side. The end of the air inlet interface away from the silencer cover is arranged obliquely upward, and the other end is connected to the air inlet pipe.

[0010] Preferably, the air inlet interface mounting seat and the gas outlet interface mounting seat are arranged on the side of the silencer cover facing the silencer box, and the silencer box is provided with a mounting seat notch at the corresponding position. The mounting seat notch is used to accommodate the air inlet interface mounting seat and the gas outlet structure mounting seat, and the protruding rib is also arranged on the mounting seat notch and passes through the mounting seat notch.

[0011] Preferably, the trapezoidal clamping block is arranged on the outer side wall of the interface, and the lower bottom is arranged on the side close to the silencer cover.

[0012] Preferably, the top end of the clamping piece is fixedly connected with the air inlet head and the air outlet head, the bottom end is not connected with the air inlet head and the air outlet head, the clamping block enters from the bottom end of the clamping piece, and the height of the clamping hole is greater than the height of the trapezoidal clamping block, so that the clamping block can be clamped into the clamping hole. The trapezoidal design of the clamping block provides better clamping stability, prevents the air inlet head and the air outlet head from accidentally falling off during use, facilitates quick disassembly and replacement, and improves the convenience of maintenance.

[0013] Preferably, the bottom end of the inner cavity of the muffler box is provided with an oil leakage hole, and the oil leakage hole is located on the side of the convex rib away from the muffler cover. The design of the oil leakage hole can effectively discharge the oil accumulated in the muffler box, prevent the oil accumulation from affecting the silencing effect and the performance of the compressor, facilitate cleaning and maintenance, and improve the service life and reliability of the muffler.

[0014] The utility model discloses a replaceable air inlet and outlet head muffler structure, through setting up clamping piece and clamping piece, the replaceability and detachability of air inlet head and air outlet head are realized, the replaceability and standardization are improved while not changing the existing muffler silencing effect, the production cost is reduced, and the production efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the overall structural drawing of the utility model.

[0016] Figure 2 It is the overall structural drawing of the muffler box of the utility model.

[0017] Figure 3 It is the front view of the muffler cover of the utility model.

[0018] Figure 4 It is the structure diagram of the air inlet head of the utility model.

[0019] Figure 5 It is the sectional view of the connecting place of the air inlet head and the muffler cover of the utility model.

[0020] Fig. 1: muffler box; 1.1: convex rib; 1.2: oil leakage hole; 2: muffler cover; 2.1: air inlet pipe; 2.2: air outlet head interface; 2.3: clamping block; 2.4: air inlet head interface; 2.5: slot; 3: air inlet head; 3.1: air inlet head port; 3.2: clamping piece; 3.3: clamping hole; 4: air outlet head. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0022] Due to the limitation of space and mold process, the inlet and outlet air heads of the conventional muffler are mostly integrally formed with the muffler cavity. Such design has many drawbacks in practical application. For example, when it is necessary to adapt to mufflers of different shapes, it is often necessary to repeatedly open the mold, which not only consumes a lot of time and cost, but also may cause unstable performance of the muffler due to mold precision problems. By separating the inlet air head 3 and the outlet air head 4, we can realize free combination of the inlet air head 3, the outlet air head 4 and the muffler cavity. This means that in actual production, it is no longer necessary to repeatedly open the mold in order to match mufflers of different shapes.

[0023] For example, as shown in FIG. 1, the inlet air head 3 and the outlet air head 4 are connected to the muffler cavity 2 through the connecting pipe 5. Figure 1As shown, the sound absorber structure of the replaceable air inlet and outlet head 4 is mainly composed of two parts of the sound absorber box 1 and the sound absorber cover 2, and the ingenious design and cooperative matching of the two are the basis for realizing the high-efficiency work of the sound absorber and the replaceable function of the air inlet head 3 and the air outlet head 4. The top end of the sound absorber cover 2 is connected with the detachable air outlet head 4 through a specific connection mode, and a detachable air inlet head 3 is arranged at the side edge thereof. This layout enables the gas to enter and exit the sound absorber according to the predetermined path, thereby realizing effective suppression of the airflow noise and optimization of the air suction efficiency. The outer side of the air outlet head interface 2.2 at the top end of the sound absorber cover 2 is uniformly distributed with a plurality of clamping blocks 2.3, and the cross section of the clamping blocks 2.3 is trapezoidal, and the unique shape design plays a key role in the fixing and dismounting process of the air inlet and outlet head 4. Similarly, the outer side of the air inlet head interface 2.4 at the side edge of the sound absorber cover 2 is also circumferentially provided with a plurality of such clamping blocks 2.3. And the air inlet head 3 and the air outlet head 4 are provided with a plurality of corresponding clamping pieces 3.2 at the air inlet head interface 3.1, the bottom end of the air inlet head 3 is provided with an air inlet head port 3.1, the bottom end of the air outlet head 4 is provided with an air outlet head port, the air inlet head port 3.1 is inserted into the air inlet head interface 2.4, the air outlet head port 3.1 is inserted into the air outlet head interface 2.2, the bottom end of the clamping piece 3.2 is provided with a clamping hole 3.3, and the air inlet head 3 and the air outlet head 4 are conveniently replaced and firmly fixed through the ingenious cooperation of the clamping block 2.3 and the clamping hole 3.3, which greatly improves the replaceability and standardization degree of the sound absorber under the premise of ensuring the original sound absorption effect of the sound absorber, thereby reducing the production cost and improving the production efficiency. On the joint surface of the sound absorber cover 2 and the sound absorber box 1, there are carefully designed insertion grooves 2.5, and the insertion grooves 2.5 are arranged around the periphery of the inner cavity of the sound absorber cover 2. The existence of the insertion grooves 2.5 not only enhances the connection stability between the sound absorber cover 2 and the sound absorber box 1, reduces the vibration and noise generated by the equipment operation, but also provides convenient conditions for the quick dismounting and assembling of the two, so that the operation can be more efficiently carried out during equipment maintenance and replacement of parts, and the maintenance convenience and overall service life of the sound absorber are effectively improved. The side of the sound absorber box 1 facing the sound absorber cover 2 is provided with a protruding rib 1.1 matched with the insertion groove 2.5, and the structure strength and sealing property of the sound absorber are significantly enhanced through the sealing cooperation of the protruding rib 1.1 and the insertion groove 2.5. This close sealing structure can effectively prevent refrigerant leakage and ensure the stable operation of the compressor system. At the same time, this simple and efficient assembly mode greatly simplifies the assembly process of the sound absorber, reduces the assembly time and labor cost, thereby improving the production efficiency and providing strong support for large-scale production.

[0024] As Figure 1 , Figure 3 and Figure 4As shown, the air inlet head interface 2.4 is arranged on a specially designed air inlet head interface 2.4 mounting seat, and the air outlet head interface 2.2 is arranged on an air outlet head interface 2.2 mounting seat. This design makes the installation of the air inlet head interface 2.4 and the air outlet head interface 2.2 on the muffler more stable and reliable, effectively reducing the interface wear caused by equipment operation vibration. At the same time, when the interface fails or needs to be maintained or replaced, this independent mounting seat design can be operated more conveniently and quickly, significantly improving the reliability and durability of the entire muffler.

[0025] As shown in Figure 1 , the slot 2.5 is also ingeniously arranged on and penetrates through the air inlet head interface 2.4 mounting seat and the air outlet structure mounting seat. The air outlet head interface 2.2 mounting seat is located at the left side of the middle of the top end of the muffler cover 2, and the air inlet head interface 2.4 mounting seat is arranged on the side close to the air outlet head interface 2.2 mounting seat, i.e. the left side. And the end of the air inlet head interface 2.4 away from the muffler cover 2 is arranged obliquely upward, similarly, the air outlet head interface is arranged at the left side of the middle of the top end of the muffler cover 2, and the air inlet head interface 2.4 is arranged on the side close to the air outlet head interface 2.2, i.e. the left side. Such design is conducive to the smooth entry of gas into the interior of the muffler, reduces airflow resistance, improves air intake efficiency, and the other end is connected to the air inlet pipe 2.1, ensuring that the gas can be stably input into the muffler for noise reduction treatment.

[0026] As shown in Figure 1 , the air inlet head interface 2.4 mounting seat and the air outlet head interface 2.2 mounting seat are arranged on the side of the muffler cover 2 facing the muffler box 1, and correspondingly, the muffler box 1 is provided with mounting seat notches at the corresponding positions. The role of these mounting seat notches is to provide space for the air inlet head interface 2.4 mounting seat and the air outlet structure mounting seat, ensuring that they can be closely fitted without interference. At the same time, the ribs 1.1 are also arranged on and penetrate through the mounting seat notches, further enhancing the connection strength and sealing performance of the muffler box 1 and the muffler cover 2 at these key parts, ensuring the integrity and stability of the entire muffler structure.

[0027] As shown in Figure 3 and Figure 5As shown, the height of the trapezoidal card block 2.3 is set on the interface outer wall, and the lower bottom is set on one side close to the muffler cover 2. This design makes the card block 2.3 more smoothly guided when inserted into the carding hole 3.3, just like a guide, which can guide the card block to enter the carding hole accurately, avoiding the difficulty of installation due to position deviation. At the same time, the trapezoidal structure can provide better carding stability after carding. It is like a solid support structure, tightly clamping the carding hole, so that the air inlet head 3 and the air outlet head 4 can remain stable after installation and will not be easily loosened. When the muffler is subjected to vibration or other external forces during operation, the trapezoidal fit between the card block 2.3 and the carding hole 3.3 plays an important role. The vibration inside the muffler may cause the air inlet head and the air outlet head to be affected by various forces, and the trapezoidal structure can effectively resist these forces to prevent the air inlet head 3 and the air outlet head 4 from accidentally falling off. This stability is crucial for the normal operation of the muffler, which ensures that the muffler can continuously play its soundproofing function and will not affect the performance of the entire muffling system due to loosening of the air inlet head or the air outlet head. Moreover, when the air inlet head 3 or the air outlet head 4 needs to be replaced, the operator only needs to apply appropriate external force to easily pull the card block 2.3 out of the carding hole 3.3, which is very convenient and makes the replacement process simple and fast. Realizing quick disassembly and replacement, greatly improving the convenience of maintenance, reducing equipment downtime and improving production efficiency.

[0028] As Figure 4 shown, the top end of the carding piece 3.2 is fixedly connected with the air inlet head 3 and the air outlet head 4, and the bottom end is not connected with the air inlet head 3 and the air outlet head 4. The card block 2.3 enters from the bottom end of the carding piece 3.2. In this embodiment, the carding hole 3.3 is preferably square, the height of the carding hole 3.3 is greater than the height of the trapezoidal card block 2.3, and the length of the carding hole 3.3 is slightly greater than the length of the card block 2.3. The cooperation between the card block 2.3 and the carding hole 3.3 is crucial during installation. Because the height of the carding hole 3.3 is greater than the height of the trapezoidal card block 2.3, the card block has a certain space for movement after being inserted into the carding hole. This space facilitates the operator to make fine adjustments during installation, ensuring that the air inlet head 3 and the air outlet head 4 are tightly and accurately connected with the muffler cover 2. This precise carding structure design not only ensures the sealing performance of the muffler to prevent gas leakage. The sealing performance of the muffler is directly related to its soundproofing effect, and if gas leaks, the soundproofing function of the muffler will be affected. Moreover, this design provides a strong guarantee for the efficient soundproofing and stable operation of the muffler. The stable operation of the muffler is crucial for the entire refrigerator compressor system, as it can ensure that the noise generated by the compressor during operation is effectively controlled, improving the efficiency and stability of the equipment.

[0029] As Figure 2As shown, the bottom end of the muffler box 1 is provided with an oil leakage hole 1.2, which is located on the side of the convex rib 1.1 away from the muffler cover 2. During the operation of the compressor, a small amount of oil may enter the interior of the muffler due to various reasons. If these oil cannot be discharged in time, they will accumulate in the muffler box 1, not only affecting the muffling effect and reducing the muffler's ability to suppress airflow noise, but also possibly having a negative impact on the performance of the compressor, such as increasing the operating resistance of the compressor, reducing the refrigeration efficiency, etc. The design of the oil leakage hole 1.2 effectively solves this problem, as it can timely discharge the oil accumulated in the muffler box 1, keeping the interior of the muffler clean and dry, and ensuring the stability and reliability of the muffling effect. At the same time, the position of the oil leakage hole 1.2 is set on the side of the convex rib 1.1 away from the muffler cover 2, so that oil leakage from the insertion slot 2.5 or other sealing parts can be avoided, further ensuring the sealing performance and overall performance of the muffler. During equipment maintenance, the operator can check and clean the oil accumulation inside the muffler through the oil leakage hole 1.2, making maintenance operations convenient and efficient, improving the service life and reliability of the muffler, and reducing the maintenance cost and failure rate of the equipment.

[0030] The air inlet head 3 and the air outlet head 4 are connected to the muffler box 1 by setting the clamping piece 3.2 and the clamping block 2.3. The connection between the muffler air inlet head 3 and the air outlet head 4 and the muffler cavity adopts a unique clamping mode. This mode not only realizes the detachable function, but also is not easy to fall off during normal use. This ensures that the muffler can work stably during operation and will not affect the muffling effect due to the loosening of the air inlet head 3 or the air outlet head 4. The material selection of the muffler air inlet head 3 and the air outlet head 4 is also of great significance. They can be different from the muffler box 1 and the muffler cover 2. Different materials have different effects on the muffling effect. For example, some materials may have better sound absorption performance, while other materials may have different reflection and absorption characteristics of sound. By selecting muffler air inlet head 3 and air outlet head 4 made of different materials, we can further cause the change of impedance. This change can optimize the muffling effect of the muffler at different frequencies, so as to realize a wider frequency coverage. The arbitrary combination of the muffler air inlet head 3 and the air outlet head 4 makes them match more shell shapes, valve plate air inlet shapes. This not only ensures the stability of the muffler structure while improving the process, but also reduces the waste of muffler inventory caused by the change of other structural shapes. For example, when the shell or valve plate air inlet shape of the refrigerator compressor changes, we can adjust the combination of the muffler air inlet head 3 and the air outlet head 4 to adapt to the new structural requirements without the need to redesign and manufacture the muffler. In practical application, we can flexibly select the combination of the muffler air inlet head 3 and the air outlet head 4 according to different muffling needs and use scenarios. This not only improves the muffling effect of the muffler, but also meets the performance requirements of different users. At the same time, this design provides more choices and convenience for the production and maintenance of the muffler.

[0031] Obviously, the above embodiments are only examples for the sake of clarity, and are not limited to the embodiments. Based on the above description, those skilled in the art can make other different forms of changes or modifications. Here, it is not necessary and impossible to exhaust all embodiments. The obvious changes or modifications derived therefrom are still within the protection scope of the present application.

Claims

1. A silencer structure with replaceable inlet and outlet air heads, characterized in that, It includes a muffler box and a muffler cover. The top of the muffler cover is connected to a detachable air outlet, and one side is equipped with a detachable air inlet. The top of the muffler cover is provided with an air outlet interface, and one side of the muffler cover is provided with an air inlet interface. Several snap-fit ​​blocks are provided on the outer circumference of both the air inlet and air outlet interfaces, with the tips of the snap-fit ​​blocks facing the inner cavity of the muffler. Several snap-fit ​​pieces are provided circumferentially on the outer side of the bottom end of the air inlet and outlet heads, and square snap-fit ​​holes are provided at the bottom end of the snap-fit ​​pieces.

2. The silencer structure with replaceable inlet and outlet air heads according to claim 1, characterized in that, The muffler cover and the muffler box have a slot on their mating surface, and the slot is located around the inner cavity of the muffler cover.

3. A silencer structure with replaceable inlet and outlet air heads according to claim 1 or 2, characterized in that, The muffler box has a raised rib on the side facing the muffler cover that mates with the slot. The muffler box and the muffler cover are sealed together by the raised rib and the slot.

4. The silencer structure with replaceable inlet and outlet air heads according to claim 1, characterized in that, The air intake port is mounted on the air intake port mounting base, and the air outlet port is mounted on the air outlet port mounting base.

5. A silencer structure with replaceable inlet and outlet air heads according to claim 4, characterized in that, The air inlet port mounting base and the air outlet port mounting base are located on the side of the muffler cover facing the muffler box, and the muffler box has mounting base notches at the corresponding positions.

6. A silencer structure with replaceable inlet and outlet air heads according to claim 1, characterized in that, The snap-fit ​​block has a trapezoidal cross-section. The height of the trapezoid is located on the outer wall of the interface, and the bottom surface is located on the side near the muffler cover.

7. A silencer structure with replaceable inlet and outlet air heads according to claim 6, characterized in that, The top of the snap-fit ​​piece is fixedly connected to the air inlet and outlet. The height of the snap-fit ​​hole is greater than the height and length of the trapezoidal snap-fit ​​block, allowing the snap-fit ​​block to snap into the snap-fit ​​hole.

8. A silencer structure with replaceable inlet / outlet heads according to claim 1, 2, or 5, characterized in that, An oil leakage hole is provided at the bottom of the inner cavity of the muffler box, and the oil leakage hole is located on the side of the rib away from the muffler cover.

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