Air conditioner muffler

Abstract

The utility model discloses an air conditioner silencer, including the silencer main part, be located the liquid inlet of silencer main part front part and be located the liquid outlet of silencer main part rear part, the bowl -shaped chamber of funnel shape in the silencer main part, the inside diameter of bowl -shaped chamber is greater than the liquid inlet and the liquid outlet, and the liquid inlet and the liquid outlet are located the front and rear part of bowl -shaped chamber and are set in the staggered position, and the tubular flow -retarding slope is equipped between the liquid inlet and bowl -shaped chamber, and the inclined direction of flow -retarding slope end portion is inclined to the side of approaching bowl -shaped chamber inner wall. The utility model discloses through design has the staggered liquid inlet and the liquid outlet of silencer, and is equipped with the flow -retarding slope in the liquid inlet portion to the flow rate of the refrigerant inside the combination gravity forms different flow bundle, changes the through path of fluid, also makes the sound wave due to the change of flow rate realizes the cancellation interference effect between sound waves, need not form the complex manufacturing process simultaneously, further optimizes the noise reduction effect of silencer produced.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts, and in particular to an air conditioning muffler. Background Technology

[0002] Discontinuous operation of the automotive air conditioning compressor is one of the main causes of pulsation. The intake and exhaust pipes of the system mainly contain gas, while the liquid pipe mainly contains liquid refrigerant, both of which fall within the scope of fluid working fluid research. The flow of the fluid working fluid in the pipes will generate turbulence. In turbulence, the trajectories of fluid particles are chaotic, intersecting, and changing rapidly, which can easily generate noise. Therefore, a muffler is needed to reduce the noise generated by the automotive air conditioning.

[0003] However, existing silencers only consider the effect of internal sound insulation, such as forming a double-layer sound-absorbing structure, without taking into account that different refrigerant flow rates will also affect the transmission of sound waves. Combining this situation with sound waves to form sound insulation will not only facilitate subsequent industrial processing steps, but also further optimize the noise reduction rate of the silencer. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide an air conditioner muffler, mainly to solve the technical problem that the existing muffler has a complex silencing structure and does not take into account the influence of refrigerant flow rate.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: This utility model relates to an air conditioner muffler, comprising a muffler body, a liquid inlet located at the front of the muffler body, and a liquid outlet located at the rear of the muffler body. The muffler body has a funnel-shaped bowl-shaped chamber inside, with the internal diameter of the bowl-shaped chamber being larger than that of the liquid inlet and the liquid outlet. The liquid inlet and the liquid outlet are located at the front and rear of the bowl-shaped chamber, respectively, and a tubular slow-flow inclined surface is provided between the liquid inlet and the bowl-shaped chamber. The inclined direction of the end of the slow-flow inclined surface is inclined towards the side close to the inner wall of the bowl-shaped chamber. The slow-flow inclined surface is used to adjust the flow direction inside the bowl-shaped chamber.

[0006] Preferably, the bowl-shaped chamber includes an open opening and a constricting opening on the side away from the open opening. The diameter of the constricting opening is smaller than the diameter of the open opening, and an outlet is provided at the axial extension of the constricting opening.

[0007] Preferably, the surface of the open opening is provided with a liquid inlet, and the inner wall of the bowl-shaped cavity is provided with an inclined surface along the inclined structure of the slow-flow slope.

[0008] Preferably, the interior of the bowl-shaped cavity is rounded, and the edge of the constriction opening is sloped.

[0009] Preferably, the inlet and outlet are located in the same cross-sectional plane and are staggered left and right, with the edges of the inlet and outlet adjacent along the axial projection and leaving a gap.

[0010] Preferably, the axes of the open port, the constricting port, and the liquid outlet are collinear.

[0011] Preferably, the liquid inlet and the slow-flow slope are arranged in a stepped manner, and the diameter of the liquid inlet is larger than the diameter of the slow-flow slope. The liquid outlet and the converging port are also arranged in a stepped manner, and the diameter of the converging port is smaller than that of the liquid outlet.

[0012] Preferably, the converging opening extends into the bowl-shaped cavity with a silencer tube, the upper surface of which is provided with an upper groove, and the lower surface of which is provided with a lower groove.

[0013] Preferably, the number of holes in the lower slot is twice the size of the number of holes in the upper slot.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention features a silencer with staggered inlet and outlet ports, and a flow-slowing slope at the inlet. This allows the refrigerant flow rate to combine with gravity to form different flow streams, changing the fluid's path and causing the sound waves to cancel each other out due to the change in flow rate. This further optimizes the noise reduction effect of the silencer without requiring complex manufacturing processes. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of Example 1; Figure 2 This is a cross-sectional structural diagram of Example 1; Figure 3 This is a cross-sectional structural diagram of Example 1; In the diagram: 1. Silencing body; 2. Liquid inlet; 3. Liquid outlet; 4. Bowl-shaped chamber; 5. Slow-flow slope; 6. Opening; 7. Closing opening; 8. Silencing pipe; 9. Upper groove; 10. Lower groove; 11. Inclined surface. Detailed Implementation

[0016] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0017] In the attached diagram, all identical reference numerals refer to the same components.

[0018] Example 1 like Figure 1-2 As shown, this utility model provides an air conditioner muffler, including a muffler body 1, a liquid inlet 2 located at the front of the muffler body 1, and a liquid outlet 3 located at the rear of the muffler body 1. The muffler body 1 has a funnel-shaped bowl-shaped chamber 4 inside. The liquid inlet 2 and the liquid outlet 3 are located at the front and rear of the bowl-shaped chamber 4 respectively and are staggered. A tubular slow-flow inclined surface 5 is provided between the liquid inlet 2 and the bowl-shaped chamber 4. The inclined direction of the end of the slow-flow inclined surface 5 is inclined towards the side close to the inner wall of the bowl-shaped chamber 4. The slow-flow inclined surface 5 is used to adjust the flow direction inside the bowl-shaped chamber 4. Since this equipment is mainly used for noise reduction of refrigerant in automobile air conditioning, the refrigerant mainly flows from the inlet 2 into the interior of the silencer body 1 and is discharged from the outlet 3. Because the diameters of the inlet 2 and the outlet 3 are smaller than those of the bowl-shaped chamber 4, the sudden change of sound waves in the pipe cross section causes impedance mismatch, which causes the sound waves to be reflected, thereby reducing the noise level. The staggered inlet 2 and outlet 3 not only alter the noise path but also reduce turbulence in the refrigerant entering the bowl-shaped chamber 4 by incorporating a flow-slowing ramp 5, allowing the liquid to form a smooth flow pattern within the bowl-shaped chamber 4. Figure 2 The transmission method creates a difference in the flow rate between the upper and lower parts of the fluid. This causes the noise transmission path to change internally depending on the distance the fluid travels, ultimately achieving the effect of canceling out interference.

[0019] Working principle: such as Figure 1-2 As shown, after the refrigerant mainly enters from the liquid inlet 2, the stepped slow-flow slope 5 reduces the pipe diameter and increases the refrigerant flow rate, allowing it to quickly enter the open port 6 of the bowl-shaped chamber 4. Since the liquid inlet 2 is adjacent to the inner wall of the bowl-shaped chamber 4, and the inclined direction of the end of the slow-flow slope 5 is also towards the inner wall of the bowl-shaped chamber 4, the faster-flowing refrigerant forms a fast flow stream in the upper part, which flows along the upper part of the bowl-shaped chamber 4 after the rounded corners to the converging port 7, making the upper part the main flow channel. The lower part flows slowly downwards based on gravity, and is driven by the fast flow stream in the upper part to the converging port 7. This allows the sound waves from the upper and lower flow streams with different speeds to cancel each other out and interfere with each other. It also changes the path of noise transmission to a certain extent. This not only reduces the turbulence in the fluid, but also creates a canceling interference effect between the upper and lower sound waves, thus improving the noise reduction effect.

[0020] Example 2 The difference from Example 1 is that, as Figure 3 As shown, a silencer tube 8 extends from the converging opening 7 toward the inside of the bowl-shaped chamber 4. The upper surface of the silencer tube 8 is provided with an upper groove 9, and the lower surface of the silencer tube 8 is provided with a lower groove 10. The number of holes in the lower groove 10 is twice that of the upper groove 9.

[0021] Specifically, in order to further enhance the noise reduction effect inside the bowl-shaped cavity and increase the efficiency of the refrigerant fluid passing through the converging port 7, a silencer tube 8 extends inward from the surgical opening. Double-layer micro-perforations are formed in the upper and lower slots 9 and 10 of the silencer tube 8, which further reduces the sound waves when passing through the upper and lower slots 9 and 10. At this time, the area with faster flow is the middle part. The upper flow assists the middle part to increase the speed of refrigerant passage and form pressure, which drives the lower flow to pass through quickly. At the same time, it further prevents the turbulence phenomenon formed by the flow at different positions above and below in the middle part.

[0022] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An air conditioner muffler, comprising a muffler body (1), a liquid inlet (2) disposed at the front of the muffler body (1), and a liquid outlet (3) disposed at the rear of the muffler body (1), characterized in that, The sound-absorbing body (1) has a funnel-shaped bowl-shaped chamber (4) inside. The inner diameter of the bowl-shaped chamber (4) is larger than that of the liquid inlet (2) and the liquid outlet (3). The liquid inlet (2) and the liquid outlet (3) are located at the front and rear of the bowl-shaped chamber (4) and are staggered. A tubular slow-flow inclined surface (5) is provided between the liquid inlet (2) and the bowl-shaped chamber (4). The inclined direction of the end of the slow-flow inclined surface (5) is inclined towards the side close to the inner wall of the bowl-shaped chamber (4). The slow-flow inclined surface (5) is used to adjust the flow direction inside the bowl-shaped chamber (4).

2. An air conditioner muffler according to claim 1, characterized in that, The bowl-shaped chamber (4) includes an open opening (6) and a constricting opening (7) on the side away from the open opening (6). The diameter of the constricting opening (7) is smaller than the diameter of the open opening (6), and an outlet (3) is provided at the axial extension of the constricting opening (7).

3. An air conditioner muffler according to claim 2, characterized in that, The surface of the open port (6) is provided with a liquid inlet (2), and the inner wall of the bowl-shaped chamber (4) is provided with an inclined surface (11) along the inclined structure of the slow-flow slope (5).

4. An air conditioner muffler according to claim 3, characterized in that, The inside of the bowl-shaped chamber (4) is rounded, and the edges of the constriction opening (7) are sloped.

5. An air conditioner muffler according to claim 4, characterized in that, The inlet (2) and outlet (3) are located in the same cross-section and are staggered from left to right. The edges of the inlet (2) and outlet (3) are adjacent along the axial projection and have a gap.

6. An air conditioner muffler according to claim 5, characterized in that, The axes of the open port (6), the constricting port (7), and the liquid outlet (3) are collinear.

7. An air conditioner muffler according to claim 6, characterized in that, The inlet (2) and the slow-flow slope (5) are arranged in a stepped manner, and the diameter of the inlet (2) is larger than the diameter of the slow-flow slope (5). The outlet (3) and the converging port (7) are arranged in a stepped manner, and the diameter of the converging port (7) is smaller than that of the outlet (3).

8. An air conditioner muffler according to claim 7, characterized in that, The converging opening (7) extends into the bowl-shaped chamber (4) with a silencing tube (8). The upper surface of the silencing tube (8) is provided with an upper groove (9), and the lower surface of the silencing tube (8) is provided with a lower groove (10).

9. An air conditioner muffler according to claim 8, characterized in that, The number of holes in the lower slot (10) is twice that of the upper slot (9).

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