Liquid-impact-resistant direct suction silencer structure

Abstract

The invention discloses an anti-liquid-impact direct suction silencer structure, and aims to provide a liquid-impact-resistant direct suction silencer structure which can perform gas-liquid separation on a gas-liquid mixed refrigerant, so that on one hand, a gaseous refrigerant normally passes through, and on the other hand, a liquid refrigerant is collected, and therefore, the liquid refrigerant is prevented from impacting a suction valve plate, and the service life of the liquid-impact-resistant direct suction silencer structure is prolonged. The direct air suction silencer structure capable of preventing the liquid impact can prevent the air suction valve plate from being broken. The air suction silencer comprises an air suction silencer body which comprises a silencer inner cavity and an air inlet pipe. The gas-liquid separator comprises a gas-liquid separation cavity, a separation inlet and a separation outlet, wherein the separation inlet and the separation outlet are communicated with the gas-liquid separation cavity. When a gas-liquid mixed refrigerant enters the gas-liquid separation cavity through the gas inlet pipe and the separation inlet, gas-liquid separation is carried out in the gas-liquid separation cavity, the gas-state refrigerant directly enters the silencer inner cavity through the separation outlet, and the liquid-state refrigerant is collected in the gas-liquid separation cavity.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigeration compressors, and particularly to a direct suction muffler structure for preventing liquid slugging. Background Art

[0002] At present, higher requirements for energy conservation and emission reduction have been put forward for refrigeration appliances such as refrigerators and freezers. The compressor is the "heart" of refrigerators and freezers and is the core component for realizing refrigeration. Improving the energy efficiency ratio of the compressor is an important task for meeting the requirements of energy conservation and emission reduction.

[0003] The return pipe, lower housing, bellows and suction muffler of the compressor are successively attached to form a sealed direct suction structure. After using the direct suction structure, the gaseous refrigerant directly entering the suction muffler through the return pipe and bellows is not heated by the high-temperature gas in the housing, which can effectively improve the suction density during the suction process of the compressor. When the displacement and rotational speed of the compressor are fixed, it can effectively improve the suction mass flow rate, thereby improving the energy efficiency ratio of the compressor; however, there may also be liquid refrigerant in the return pipe. After directly entering the suction muffler, it causes liquid slugging of the suction valve plate, resulting in the fragmentation of the suction valve plate and damage to the compressor, affecting the use of the direct suction structure. Summary of the Invention

[0004] The purpose of the present invention is to overcome the problem of fragmentation of the suction valve plate caused by the direct impact of liquid refrigerant in the existing direct suction structure, and to propose a direct suction muffler structure for preventing liquid slugging that can separate gas-liquid mixed refrigerant into gas and liquid. On the one hand, it allows the gaseous refrigerant to pass through normally, and on the other hand, it collects the liquid refrigerant, thereby preventing the liquid refrigerant from impacting the suction valve plate and causing the fragmentation of the suction valve plate.

[0005] The technical solution of the present invention is as follows: A direct suction muffler structure for preventing liquid slugging, comprising: A suction muffler, which includes a muffler inner cavity and an inlet pipe; A gas-liquid separator, which includes a gas-liquid separation cavity and a separation inlet and a separation outlet connected to the gas-liquid separation cavity; After the gas-liquid mixed refrigerant enters the gas-liquid separation chamber through the intake pipe and the separation inlet, gas-liquid separation is carried out in the gas-liquid separation chamber. Among them, the gaseous refrigerant directly enters the inner cavity of the muffler through the separation outlet, and the liquid refrigerant is collected in the gas-liquid separation chamber. After the gas-liquid mixed refrigerant in the refrigeration compressor refrigeration system of this solution enters the gas-liquid separation chamber through the intake pipe and the separation inlet, on the one hand, the gaseous refrigerant can pass through normally. Specifically, the gaseous refrigerant enters the inner cavity of the muffler through the separation outlet and then enters the refrigeration compressor refrigeration system; on the other hand, the liquid refrigerant from the system can be collected, and after the liquid refrigerant in the gas-liquid separation chamber is vaporized again, it re-enters the system; in this way, the risk of valve plate liquid hammer can be minimized, thereby preventing the liquid refrigerant from impacting the suction valve plate and causing the suction valve plate to break. At the same time, it can also effectively reduce the circulation of the liquid refrigerant in the refrigeration compressor refrigeration system, thereby reducing the noise of the refrigeration system.

[0006] Preferably, the gas-liquid separator further includes an air delivery pipeline arranged at the top of the gas-liquid separation chamber. The air delivery pipeline communicates the gas-liquid separation chamber with the inner cavity of the muffler, and the inner hole of the air delivery pipeline constitutes the separation outlet. The air delivery pipeline is arranged at the top of the gas-liquid separation chamber. In this way, on the one hand, it does not affect the passage of the gaseous refrigerant, and on the other hand, it is beneficial to collect the liquid refrigerant in the gas-liquid separation chamber.

[0007] Preferably, the separation inlet is arranged on the side surface of the inner cavity of the muffler, and a filter screen is provided on the separation inlet. Arranging the separation inlet on the side surface of the inner cavity of the muffler is beneficial for the liquid refrigerant to enter the inner cavity of the muffler and realize gas-liquid separation by hitting the inner wall. The filter screen structure can further block the transportation of the liquid refrigerant and improve the gas-liquid separation effect.

[0008] Preferably, the gas-liquid separator is located in the inner cavity of the muffler, and a separator drip hole is provided at the bottom of the gas-liquid separation chamber. The gas-liquid separator is located in the inner cavity of the muffler, which is not only beneficial for improving the structural compactness; but also can make the liquid refrigerant that has not been vaporized in the gas-liquid separation chamber drain downward through the separator drip hole and drip, and in the inner cavity of the muffler, the liquid refrigerant is vaporized again.

[0009] Preferably, the intake muffler further includes an inner insertion tube, rib plates are provided on the inner insertion tube, a clamping groove cooperating with the rib plates is provided in the inner cavity of the muffler, and the rib plates are inserted into the clamping groove to fix the inner insertion tube in the inner cavity of the muffler. The gas-liquid separator is located in the inner cavity of the muffler, and the gas-liquid separator is connected to the inner insertion tube. In this way, the positioning and installation of the gas-liquid separator can be facilitated.

[0010] Preferably, the intake muffler further includes an outlet pipeline, which is located at the top of the intake muffler and communicates with the inner cavity of the muffler. The inner insertion tube extends vertically, the upper end of the inner insertion tube faces the outlet pipeline, and the lower end of the inner insertion tube communicates with the inner cavity of the muffler. In this way, the gas transmission capacity of the muffler can be improved.

[0011] Preferably, the outlet end of the intake pipe faces the separation inlet. In this way, the gas-liquid mixed refrigerant can directly enter the gas-liquid separation chamber through the intake pipe and the separation inlet.

[0012] Preferably, the gap between the outlet end of the intake pipe and the separation inlet is 0-2 mm. In this way, it is ensured that the gas-liquid mixed refrigerant entering the intake pipe can directly enter the gas-liquid separation chamber.

[0013] Preferably, a drip hole of the muffler is provided at the bottom of the inner cavity of the muffler. In this way, the liquid refrigerant that has not vaporized in the muffler can be discharged from the muffler for further vaporization.

[0014] Preferably, the intake muffler and the gas-liquid separator are located in the housing. The intake muffler further includes a balance chamber and a balance hole. The balance hole is provided on the inner wall of the balance chamber and communicates the balance chamber with the inner cavity of the housing. The balance chamber is located on one side of the inner cavity of the muffler and is connected to the inner cavity of the muffler. The balance chamber and the balance hole of this structure can adjust the pressure difference between the gas-liquid separation chamber, the inner cavity of the muffler and the housing, and prevent the gas-liquid separation chamber and the muffler from being broken.

[0015] The beneficial effects of the present invention are: It can separate the gas-liquid mixed refrigerant in the refrigeration compression system of the refrigerator. On the one hand, it allows the gaseous refrigerant to pass through normally, and on the other hand, it collects the liquid refrigerant, thereby preventing the liquid refrigerant from impacting the intake valve plate and causing the problem of the intake valve plate being broken. At the same time, it can also effectively reduce the circulation of the liquid refrigerant in the refrigeration compression system of the refrigerator, thereby reducing the noise of the refrigeration system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 FIG. is a schematic structural diagram of a direct intake muffler structure for preventing liquid hammer of the present invention.

[0017] Figure 2 FIG. is a partial cross-sectional view of the intake muffler of the present invention.

[0018] Figure 3 FIG. is an exploded schematic structural diagram of the intake muffler of the present invention.

[0019] Figure 4 FIG. is a schematic structural diagram of the muffler box body of the intake muffler of the present invention.

[0020] Figure 5It is a schematic structural diagram of the inner plug tube and the gas-liquid separator of the present invention.

[0021] In the figure: Return air pipe 1; Shell 2; Bellows 3; Suction muffler 4, muffler inner cavity 4.0, muffler upper cover 4.1, outlet gas pipeline 4.1.1, Inner plug tube 4.2, rib plate 4.2.1, connecting piece 4.2.2, muffler box body 4.3, inlet gas pipe 4.3.1, card slot 4.3.2, balance cavity 4.3.3, balance hole 4.3.4, muffler drip hole 4.3.5; Gas-liquid separator 5, separation outlet 5.0, gas transmission pipeline 5.1, separator drip hole 5.2, separation inlet 5.3, filter screen 5.4; Pump body 6. Specific implementation mode

[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation modes: Specific Example 1, as Figures 1 - 5 shown, a direct suction muffler structure for preventing liquid hammer includes a return air pipe 1, a shell 2, a bellows 3, a suction muffler 4 and a pump body 6. The return air pipe 1, the shell 2, the bellows 3 and the suction muffler 4 are sequentially attached to each other front and back to form a closed direct suction structure. The closed direct suction structure formed by sequentially attaching the return air pipe 1, the shell 2, the bellows 3 and the suction muffler 4 front and back is the prior art, so the present application does not elaborate on the specific methods and structures of such conventional technical means as the closed direct suction structure.

[0023] A direct suction muffler structure for preventing liquid hammer further includes a gas-liquid separator 5. The suction muffler 4 includes a muffler inner cavity 4.0 and an inlet gas pipe 4.3.1. The gas-liquid separator 5 includes a gas-liquid separation cavity and a separation inlet 5.3 and a separation outlet 5.0 communicated with the gas-liquid separation cavity. The inlet gas pipe communicates with the separation inlet. The separation outlet communicates with the muffler inner cavity.

[0024] The gas-liquid mixed refrigerant in the refrigeration compressor refrigeration system enters the gas-liquid separation cavity through the inlet gas pipe and the separation inlet. When the gas-liquid mixed refrigerant enters the gas-liquid separation cavity through the inlet gas pipe and the separation inlet, gas-liquid separation is carried out in the gas-liquid separation cavity, wherein the gaseous refrigerant directly enters the muffler inner cavity through the separation outlet, and the liquid refrigerant is collected in the gas-liquid separation cavity.

[0025] After the gas-liquid mixed refrigerant in the refrigeration compressor refrigeration system of this embodiment enters the gas-liquid separation chamber through the intake pipe and the separation inlet, on the one hand, the gaseous refrigerant can pass through normally. Specifically, the gaseous refrigerant enters the inner cavity of the muffler through the separation outlet and then enters the refrigeration compressor refrigeration system; on the other hand, it can collect the liquid refrigerant from the system, and after the liquid refrigerant in the gas-liquid separation chamber is vaporized again, it re-enters the system; in this way, the risk of valve plate liquid hammer can be minimized, thereby preventing the liquid refrigerant from impacting the suction valve plate and causing the problem of the suction valve plate breaking. At the same time, it can also effectively reduce the circulation of the liquid refrigerant in the refrigeration compressor refrigeration system, thereby reducing the noise of the refrigeration system.

[0026] Furthermore, the gas-liquid separator 5 is located inside the inner cavity 4.0 of the muffler, and a separator drip hole 5.2 is provided at the bottom of the gas-liquid separation chamber. There is a spacing between the separator drip hole and the bottom wall of the inner cavity of the muffler. The gas-liquid separator being located inside the inner cavity of the muffler not only helps to improve the structural compactness; but also allows the liquid refrigerant that has not been vaporized in the gas-liquid separation chamber to be discharged downward through the separator drip hole and drip, and in the inner cavity of the muffler, the liquid refrigerant is vaporized again.

[0027] Furthermore, the outlet end of the intake pipe 4.3.1 faces the separation inlet 5.3, so that the intake pipe communicates with the separation inlet. In this way, the gas-liquid mixed refrigerant can directly enter the gas-liquid separation chamber through the intake pipe and the separation inlet. In this embodiment, the intake pipe is provided on the outer side wall of the intake muffler.

[0028] Furthermore, the gap between the outlet end of the intake pipe and the separation inlet is 0 - 2 mm. In this way, it is ensured that the gas-liquid mixed refrigerant entering the intake pipe can directly enter the gas-liquid separation chamber.

[0029] Furthermore, the gas-liquid separator 5 further includes an air delivery pipeline 5.1 provided at the top of the gas-liquid separation chamber. The air delivery pipeline extends vertically. The air delivery pipeline connects the gas-liquid separation chamber and the inner cavity of the muffler. The inner hole of the air delivery pipeline constitutes the separation outlet 5.0. By setting the air delivery pipeline at the top of the gas-liquid separation chamber, on the one hand, it does not affect the passage of the gaseous refrigerant, and on the other hand, it is beneficial to collect the liquid refrigerant in the gas-liquid separation chamber.

[0030] Furthermore, the separation inlet 5.3 is provided on the side surface of the inner cavity of the muffler. By setting the air delivery pipeline at the top of the gas-liquid separation chamber and setting the separation inlet on the side surface of the inner cavity of the muffler, it is beneficial for the liquid refrigerant to enter the inner cavity of the muffler and then achieve gas-liquid separation by hitting the inner wall.

[0031] Furthermore, a filter screen 5.4 is provided on the separation inlet. The filter screen structure can further block the delivery of the liquid refrigerant and improve the gas-liquid separation effect.

[0032] Specific Embodiment 2. For the rest of the structure of this embodiment, refer to Specific Embodiment 1. The difference is that As Figures 1 - 5 shown, the intake muffler 4 further includes an inner insertion tube 4.2. In this embodiment, the intake muffler further includes a muffler box body 4.3 and a muffler upper cover 4.1. The space enclosed between the muffler box body and the muffler upper cover wholly or partly constitutes the muffler inner cavity. The intake pipe 4.3.1 is provided on the outer side wall of the muffler box body.

[0033] The inner insertion tube 4.2 is provided with rib plates 4.2.1. The muffler inner cavity is provided with a clamping groove 4.3.2 that cooperates with the rib plates. The rib plates are inserted into the clamping grooves, thereby fixing the inner insertion tube in the muffler inner cavity. In this embodiment, there are four rib plates on the inner insertion tube. Two of the rib plates are located in the middle of the inner insertion tube, and these two rib plates are distributed on both sides of the inner insertion tube; there are also two rib plates located at the bottom of the inner insertion tube, and the bottoms of these two rib plates extend downward below the lower end of the inner insertion tube. In this way, through the cooperation of multiple rib plates and the clamping grooves, the inner insertion tube can be fixed more stably; and the bottoms of the two rib plates at the bottom of the inner insertion tube extend downward below the lower end of the inner insertion tube, so that the lower end of the inner insertion tube can be separated from the bottom wall of the muffler inner cavity to ensure that the lower end of the inner insertion tube communicates with the muffler inner cavity.

[0034] Furthermore, the gas-liquid separator 5 is connected to the inner insertion tube 4.2. Specifically, the outer shell of the gas-liquid separator and the inner insertion tube are integrally connected by a connecting member 4.2.2. In this embodiment, the connecting member is L-shaped. In this way, after the inner insertion tube is fixed in the muffler inner cavity, the gas-liquid separator will also be fixed in the muffler inner cavity together with the inner insertion tube, which can facilitate the positioning and installation of the gas-liquid separator.

[0035] Furthermore, the intake muffler 4 further includes an outlet pipeline 4.1.1. The outlet pipeline is located at the top of the intake muffler and communicates with the muffler inner cavity. In this embodiment, the outlet pipeline is provided on the muffler upper cover 4.1. The inner insertion tube 4.2 extends vertically. The upper end of the inner insertion tube is directly opposite to the lower port of the outlet pipeline. The lower end of the inner insertion tube communicates with the muffler inner cavity. In this way, the gas transmission capacity of the muffler can be improved.

[0036] Furthermore, a muffler drip hole 4.3.5 is provided at the bottom of the muffler inner cavity. In this way, the liquid refrigerant that has not vaporized in the muffler can be discharged from the muffler for further vaporization.

[0037] Specific Embodiment 3. For the rest of the structure of this embodiment, refer to Specific Embodiment 1 or Specific Embodiment 2. The difference is that As Figure 2 、 Figure 4As shown, the intake muffler and the gas-liquid separator are located inside the inner cavity of the housing. The intake muffler further includes a balance chamber 4.3.3 and balance holes 4.3.4. The balance holes are provided on the inner wall of the balance chamber and connect the balance chamber with the inner cavity of the housing. The balance chamber is located on one side of the inner cavity of the muffler and is connected to the inner cavity of the muffler. The balance chamber and the balance holes of this structure can adjust the pressure difference among the gas-liquid separation chamber, the inner cavity of the muffler and the housing, and prevent the gas-liquid separation chamber and the muffler from cracking.

[0038] In this embodiment, a part of the space enclosed between the muffler box body and the muffler upper cover forms the inner cavity of the muffler, and another part forms the balance chamber.

[0039] The above are only the preferred embodiments of the present invention and do not impose any limitations on the present invention. Any simple modifications, changes, and equivalent transformations made to the above embodiments according to the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A liquid-impact-proof direct-intake muffler structure, characterized in that: include: A suction muffler, the suction muffler includes a muffler inner cavity and an air intake pipe; A gas-liquid separator, the gas-liquid separator comprising a gas-liquid separation chamber and a separation inlet and a separation outlet communicated with the gas-liquid separation chamber; When the gas-liquid mixed refrigerant enters the gas-liquid separation chamber through the air inlet pipe and the separation inlet, gas-liquid separation is performed in the gas-liquid separation chamber, wherein the gaseous refrigerant directly enters the muffler cavity through the separation outlet, and the liquid refrigerant is collected in the gas-liquid separation chamber.

2. A liquid-slamming-proof direct air-intake muffler structure according to claim 1, characterized in that: The gas-liquid separator also includes an air pipeline arranged on the top of the gas-liquid separation chamber, the gas pipeline connects the gas-liquid separation chamber and the inner cavity of the muffler, and the inner hole of the gas pipeline constitutes the separation outlet.

3. The direct suction muffler structure for preventing liquid impact according to claim 1 is characterized in that: The separation inlet is arranged on the side of the inner cavity of the muffler, and a filter screen is arranged on the separation inlet.

4. A liquid-slamming-proof direct air-intake muffler structure according to claim 1, 2 or 3, characterized in that: The gas-liquid separator is located in the inner cavity of the muffler, and a separator dripping hole is provided at the bottom of the gas-liquid separation cavity.

5. A liquid-slamming-proof direct air-intake muffler structure according to claim 1, 2 or 3, characterized in that: The suction muffler also includes an inner tube, which is provided with ribs. The inner cavity of the muffler is provided with a slot that cooperates with the ribs. The ribs are inserted in the slots to fix the inner tube in the inner cavity of the muffler. The gas-liquid separator is located in the inner cavity of the muffler and is connected to the inner tube.

6. A liquid-slamming-proof direct air-intake muffler structure according to claim 4, characterized in that: The suction muffler also includes an air outlet pipeline, which is located at the top of the suction muffler and communicated with the inner cavity of the muffler. The inner insert pipe extends up and down, the upper end of the inner insert pipe faces the air outlet pipeline, and the lower end of the inner insert pipe is communicated with the inner cavity of the muffler.

7. A liquid-slamming-proof direct air suction muffler structure according to claim 1, 2 or 3, characterized in that: The outlet end of the air intake pipe faces the separation inlet.

8. The liquid-slamming-proof direct air-intake muffler structure according to claim 7 is characterized in that: The gap between the outlet end of the air intake pipe and the separation inlet is 0-2 mm.

9. A liquid-slamming-proof direct air suction muffler structure according to claim 1, 2 or 3, characterized in that: A muffler dripping hole is arranged at the bottom of the muffler inner cavity.

10. A liquid-slamming-proof direct air-intake muffler structure according to claim 1, 2 or 3, characterized in that: It also includes a shell, the suction muffler and the gas-liquid separator are located in the shell, the suction muffler also includes a balancing chamber and a balancing hole, the balancing hole is arranged on the inner wall of the balancing chamber and connects the balancing chamber with the inner cavity of the shell, the balancing chamber is located on one side of the inner cavity of the muffler, and the balancing chamber is communicated with the inner cavity of the muffler.

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