A plastic coil integrated with an air suction chamber and an air exhaust chamber
By connecting the integrated plastic coil to the intake and exhaust chambers, the problems of vibration, resonance, and connection difficulties of the exhaust coil inside the compressor are solved, resulting in a more reliable connection, reduced noise, and simplified process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUANGSHI DONPER COMPRESSOR CO LTD
- Filing Date
- 2025-06-25
- Publication Date
- 2026-07-03
AI Technical Summary
The existing design of the internal exhaust coil of the compressor has high rigidity, which leads to increased vibration, complex process, resonance noise and risk of breakage, and traditional materials are difficult to connect with the core.
It adopts a plastic coil integrated with the intake and exhaust chambers, uses PBT injection molded parts and Bondi tubing for connection, and achieves sealing through hot melt and brazing processes. The design of the sol tank improves tensile strength and avoids resonant frequencies.
It reduces installation steps, lowers resonance noise, improves connection reliability, avoids the difficulty of welding plastic coils to copper pipes, and reduces the risk of vibration and breakage.
Smart Images
Figure CN224453020U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of compressor technology, specifically to a plastic coil integrated with the intake and exhaust chambers. Background Technology
[0002] Currently, the internal discharge coil of a compressor is a crucial component connecting the compressor's discharge chamber and the internal discharge pipe. Compressed gas inside the compressor cylinder head enters the internal discharge coil through the discharge chamber and then exits the compressor through the discharge pipe. Therefore, the internal discharge coil is a vital channel for the discharge of high-temperature, high-pressure gas from the compressor. There are two design structures for the compressor's internal discharge coil:
[0003] 1) The compressor exhaust chamber and cylinder seat are integrated and sealed by an exhaust muffler cover. The exhaust muffler cover is connected to the inner exhaust coil by brazing. The other end of the inner exhaust coil is connected to the exhaust pipe by brazing.
[0004] 2) The compressor exhaust chamber and cylinder seat are separate structures. In this structure, the exhaust chamber is typically made of acid-washed steel or 08Al material, and is formed through stamping, welding, and other processes to create a separate exhaust buffer function. In both of these structures, the exhaust coil is made of Bundy tubing, and the connection between the two ends of the coil is brazing.
[0005] The above design structure has the following problems:
[0006] 1. The Bundy tube material coil has a certain rigidity after molding. After being fixed at both ends, it interacts with the motor core, which to some extent restrains the motor core, preventing it from being in a natural state, thus causing the compressor vibration to increase.
[0007] 2. Due to the limited internal space of the compressor, after the internal exhaust coil is formed, the distance between the coil and the core and the housing needs to be adjusted by calibration, which increases the process and labor costs.
[0008] 3. If the internal exhaust coil is not properly aligned, it will cause metal impact, resulting in noise and machine malfunction.
[0009] 4. Due to its shape and material properties, the internal exhaust coil after molding has a natural frequency in the range of 50-150Hz, which is very likely to coincide with the frequency used by inverter refrigerators, resulting in resonance and a "humming" sound, causing discomfort to consumers.
[0010] 5. During compressor transportation, the bends of the internal exhaust coil are continuously subjected to the impact of the inertial force of the compressor core, which poses a certain risk of breakage. Therefore, we propose a plastic coil that is integrated with the intake and exhaust chambers. Utility Model Content
[0011] In view of the above-mentioned technical problems in related technologies, this utility model provides a plastic coil integrated with the intake and exhaust chambers, which can solve the above problems.
[0012] To achieve the above-mentioned technical objectives, the technical solution of this utility model is implemented as follows:
[0013] A plastic coil integrated with the intake and exhaust chambers includes an integral cylinder head. The bottom of the integral cylinder head is integrally formed with an intake muffler cover and an exhaust muffler cover. An intake muffler cover is snapped to the bottom of the intake muffler cover. An exhaust muffler cover is integrally formed below the exhaust muffler cover. The bottom of the exhaust muffler cover is connected to and installed with a plastic coil. A Bondi tube is fitted onto the end of the plastic coil. A compressor exhaust pipe is welded to the end of the Bondi tube opposite to the plastic coil.
[0014] Furthermore, several sol-gel grooves are formed on the outer circumference of the top of the Bondi tube, and the depth of the sol-gel grooves is one-third of the wall thickness of the Bondi tube.
[0015] Furthermore, the plastic coil is S-shaped, and the top of the plastic coil is heat-fused to the top of the Bundy tube.
[0016] Furthermore, the integrated cylinder head, intake muffler chamber upper cover, exhaust muffler chamber upper cover, intake muffler chamber lower cover, and exhaust muffler chamber lower cover are all integrated injection molded parts, and all are made of PBT material.
[0017] Furthermore, the bottom outer wall of the upper cover of the intake silencer is integrally formed with buckle plates on both sides, and the top outer wall of the lower cover of the intake silencer is integrally formed with inclined buckle blocks that engage with the buckle plates on both sides.
[0018] Furthermore, the compressor exhaust pipe is connected to the bottom end of the Bundy tube via a flared pipe, and the top of the flared pipe is provided with a tapered flare.
[0019] The beneficial effects of this utility model are as follows: The intake silencer chamber, exhaust silencer chamber, and cylinder head of the device are all integral injection molded parts, which reduces the installation process and connects the workpieces. The plastic coil is made of common materials such as polypropylene or polyvinyl chloride to replace the traditional Bondi tube material. Its inherent frequency is about 30Hz, which avoids the 40-150Hz power frequency commonly used in frequency converter products and can solve the coil resonance problem.
[0020] A 30mm long Bundy tube is used to connect the plastic exhaust chamber to the compressor housing exhaust pipe, which solves the problem that plastic coils and copper tubes cannot be welded.
[0021] A sol-gel tank is designed at the connection between the Bondi tube and the plastic coil. After the plastic coil is heated, part of it flows into the sol-gel tank. After the liquid plastic in the sol-gel tank cools, it fuses with the plastic coil. When the coil is subjected to tension, the bottom of the tank generates resistance to prevent it from falling off. Attached Figure Description
[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0023] The present invention will now be described in further detail with reference to the accompanying drawings.
[0024] Figure 1 This is a schematic diagram of the structure of the plastic coil that is integrated with the intake and exhaust chambers;
[0025] Figure 2 This is a schematic diagram of a Bundy tube.
[0026] In the picture:
[0027] 1. One-piece cylinder head; 2. Intake muffler chamber top cover; 3. Exhaust muffler chamber top cover; 4. Buckle plate; 5. Angled clamp block; 6. Intake muffler chamber bottom cover; 601. Intake muffler chamber bottom connector; 7. Exhaust muffler chamber bottom cover; 8. Plastic coil; 9. Bondi tubing; 901. Solvent tank; 10. Flared pipe; 11. Compressor exhaust pipe. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.
[0029] like Figure 1-2 As shown, this utility model discloses a plastic coil integrated with the intake and exhaust chambers, including an integrated cylinder head 1. The bottom end of the integrated cylinder head 1 is integrally formed with an intake muffler chamber upper cover 2 and an exhaust muffler chamber upper cover 3. The intake muffler chamber upper cover 2 is snapped to the bottom and a lower intake muffler chamber cover 6 is integrally formed below the exhaust muffler chamber upper cover 3. The bottom end of the exhaust muffler chamber lower cover 7 is connected to and installed with a plastic coil 8. A Bondi tube 9 is sleeved on the end of the plastic coil 8. A compressor exhaust pipe 11 is welded to the end of the Bondi tube 9 opposite to the plastic coil 8.
[0030] Example 1: The integrated cylinder head 1 connects to the compressor compression chamber. One end of the integrated cylinder head 1 is connected to the upper cover 2 of the intake silencer chamber, and the other end is connected to the upper cover 3 of the exhaust silencer chamber. The intake airflow of the compressor enters the compressor compression chamber through the lower cover 6 of the intake silencer chamber, the upper cover 2 of the intake silencer chamber, and the left side of the integrated cylinder head 1. The compressed gas is discharged through the right side of the integrated cylinder head 1, and then passes sequentially through the upper cover 3 of the exhaust silencer chamber, the lower cover 7 of the exhaust silencer chamber, the plastic coil 8, the Bondi tube 9, the flared tube 10, and the compressor exhaust pipe 11. The integrated cylinder head 1, the upper cover 2 of the intake silencer chamber, the upper cover 3 of the exhaust silencer chamber, the lower cover 6 of the intake silencer chamber, and the lower cover 7 of the exhaust silencer chamber are all integrated injection molded parts, and the material is PBT. The plastic coil 8 is made of plastic. The left end of the upper pipe is heat-sealed to the exhaust muffler chamber lower cover 7. The right end of the plastic coil 8 is fitted over the outside of the Bondi tube 9. The hot-melted plastic coil 8 is filled into the melt tank 901 through the right end of the upper pipe. After cooling and solidification, the hot-melted plastic coil 8 can be snapped to the top of the Bondi tube 9 to improve tensile strength. The top of the flared tube 10 is welded to the bottom of the Bondi tube 9 using brazing equipment. The upper cover 2 of the intake muffler chamber is snapped to the inclined block 5 of the lower cover 6 of the intake muffler chamber through the snap plate 4. A sealing ring is set on the mating end face to improve the sealing performance. The lower connector 601 of the intake muffler chamber is set below the lower cover 6 of the intake muffler chamber to connect to the compressor intake pipe.
[0031] In the preferred technical solution, the plastic coil 8 is S-shaped, and the top end of the plastic coil 8 is heat-fused to the top end of the Bondi tube 9. Several sol-gel grooves 901 are opened on the outer circumference of the top end of the Bondi tube 9. The depth of the sol-gel grooves 901 is one-third of the wall thickness of the Bondi tube 9. The top end of the plastic coil 8 is sleeved on the outside of the Bondi tube 9. The heat-fused plastic coil 8 fills the sol-gel grooves 901 through the top end of the right end of the heat-fused plastic coil 8. After cooling and solidification, the heat-fused plastic coil 8 can be snapped to the top end of the Bondi tube 9 to improve tensile strength.
[0032] In the preferred technical solution, the bottom outer wall of the upper cover 2 of the air intake silencer is integrally formed with a buckle plate 4 on both sides, and the top outer wall of the lower cover 6 of the air intake silencer is integrally formed with a sloping buckle block 5 that engages with the buckle plate 4 on both sides. The buckle plate 4 moves down along the sloping buckle block 5 until the buckle plate 4 and the sloping buckle block 5 are completely engaged.
[0033] In the preferred technical solution, the compressor exhaust pipe 11 is connected to the bottom end of the Bundy tube 9 through the flared pipe 10. The top end of the flared pipe 10 is provided with a tapered flare. After the bottom end of the Bundy tube 9 is inserted into the tapered flare at the top end of the flared pipe 10, the bottom end of the Bundy tube 9 and the insertion end of the flared pipe 10 are fully brazed to improve the sealing performance.
[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A plastic coil integrated with an air suction and exhaust chamber, characterized in that, The cylinder head includes an integrated cylinder head (1), the bottom of which is integrally formed with an intake muffler cover (2) and an exhaust muffler cover (3). The intake muffler cover (2) is snapped to the bottom of the intake muffler cover (2), and the exhaust muffler cover (3) is integrally formed to the bottom of the exhaust muffler cover (3). The bottom of the exhaust muffler cover (7) is connected to a plastic coil (8), and a Bundy tube (9) is fitted at the end of the plastic coil (8). A compressor exhaust pipe (11) is welded to the end of the Bundy tube (9) away from the plastic coil (8).
2. The plastic coil of claim 1, wherein, The top outer circumference of the Bondi tube (9) is provided with several sol grooves (901), and the depth of the sol grooves (901) is one-third of the wall thickness of the Bondi tube (9).
3. The plastic coil of claim 2, wherein, The plastic coil (8) is S-shaped, and the top end of the plastic coil (8) is heat-fused to the top end of the Bundy tube (9).
4. The plastic coil of claim 1, wherein, The integrated cylinder head (1), intake muffler chamber upper cover (2), exhaust muffler chamber upper cover (3), intake muffler chamber lower cover (6) and exhaust muffler chamber lower cover (7) are all integrated injection molded parts, and the material is PBT.
5. The plastic coil of claim 1, wherein, The bottom outer wall of the upper cover (2) of the air intake silencing chamber is integrally formed with a buckle plate (4) on both sides, and the top outer wall of the lower cover (6) of the air intake silencing chamber is integrally formed with a sloping buckle block (5) that engages with the buckle plate (4) on both sides.
6. The plastic coil of claim 1, wherein, The compressor exhaust pipe (11) is connected to the bottom end of the Bundy pipe (9) through the flared pipe (10), and the top end of the flared pipe (10) is provided with a tapered flare.