Silent generator exhaust seal structure

Abstract

The utility model relates to generator sealing technical field discloses a kind of exhaust sealing structure of silent generator, including silencer wind scooper, exhaust window, rear end cover and exhaust sealing rubber ring, the exhaust window is connected on rear end cover, the rear end cover is closely matched with exhaust sealing rubber ring, characterized in that, the inside of exhaust sealing rubber ring is provided with lip, the sealing ring is provided on the silencer wind scooper, the lip is detachably connected with the sealing ring by flexible connecting piece.Effectively prevent the problem that hot air backflows to the case interior from gap, guarantee the cooling efficiency and operation safety of generator.

Description

Technical Field

[0001] This utility model relates to the field of generator sealing technology, specifically to an exhaust sealing structure for a silent generator. Background Technology

[0002] Since the silent inverter generator is encased in a housing, and the exhaust temperature is relatively high, the common practice is to connect and seal the rear end cover of the housing (exhaust side end cover) to the engine exhaust side to ensure that hot air does not enter the casing and flow back to the intake end, thereby causing a series of problems such as reduced engine cooling effect, high casing / oil tank temperature, and high oil temperature.

[0003] For example, Chinese patent document CN211975207U discloses a sealing structure for a closed generator muffler cooling exhaust port, including a muffler, a generator housing, and a sealing ring. The generator housing has a cooling exhaust port at the position corresponding to the muffler, and a raised ring is provided outside the cooling exhaust port. The sealing ring is placed between the generator housing and the muffler, and a groove is provided on the sealing ring. The depth of the groove is lower than the height of the raised ring. The raised ring is inserted into the groove to install the sealing ring. A circumferential overlapping lip is provided along the sealing ring, which is inclined towards the muffler to prevent cooling air from leaking through the gap between the generator housing and the muffler.

[0004] Currently, most exhaust-side sealing rings are fixedly connected to the louvers at one end and bonded to the muffler at the other end via a lip. Since the lip is relatively soft, and the engine is softly connected to the housing via a shock-absorbing bracket, and the engine is in motion during operation, these factors can lead to poor fit between the lip and the muffler, or relative movement between the lip and the air guide, which may cause wear. All of these factors can cause hot air to enter the engine compartment and flow back to the intake end. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a silent generator exhaust sealing structure, including a muffler air guide shroud, an exhaust window, a rear end cover, and an exhaust sealing ring. The exhaust window is connected to the rear end cover, and the exhaust sealing ring is tightly fitted on the rear end cover. The exhaust sealing ring has a lip on its inner side, and a sealing ring is provided on the muffler air guide shroud. The lip and the sealing ring are detachably assembled together by a flexible connector.

[0006] To improve the sealing performance of the generator during operation and prevent air leakage, an annular groove is provided on the rear end cover, and a protruding annular edge that mates with the annular groove is provided on the exhaust sealing ring.

[0007] Preferably, the exhaust window presses the protruding ring edge of the exhaust sealing ring into the ring groove.

[0008] Furthermore, the sealing ring is provided with a plurality of holes, and the lip is provided with a flexible connector corresponding to the plurality of holes on the contact surface with the sealing ring. The lip and the sealing ring are connected by the flexible connector passing through the holes.

[0009] Preferably, the flexible connector includes a columnar portion and a conical portion, the conical portion being located in the middle of the columnar portion, and the gap between the conical portion and the lip is used to fix the muffler air guide cover.

[0010] To accommodate vibrations during generator operation, the exhaust sealing ring has a U-shaped, wavy, or bent cross-sectional shape.

[0011] To facilitate the installation of the exhaust sealing ring, the exhaust window is detachably connected to the rear cover.

[0012] This utility model has the following beneficial effects: 1. This utility model effectively ensures sealing performance by actively connecting the lip of the exhaust sealing ring to the sealing ring of the muffler air guide shroud through a flexible connector. This ensures that the sealing contact surface remains tightly fitted under continuous engine vibration and displacement conditions, effectively preventing hot air from flowing back into the engine casing through gaps and ensuring the generator's cooling efficiency and operational safety.

[0013] 2. A dual-sealing structure ensures high reliability: The outer side of the exhaust sealing ring engages with the annular groove of the rear cover via a protruding ring edge and is pressed tightly by the exhaust window, forming a reliable static seal and ensuring a fixed connection with the housing. The inner side uses a flexible connector to connect the lip to the sealing ring, forming a dynamic seal that effectively compensates for the relative movement between the engine and the housing. This combined static and dynamic dual-sealing structure significantly improves the overall sealing reliability.

[0014] 3. Good wear resistance and long service life: The flexible connector fixes the relative position of the lip and the sealing ring, eliminating the reciprocating friction between them, thereby fundamentally reducing wear and extending the service life of the exhaust sealing ring. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of an embodiment of the silent generator exhaust sealing structure of this utility model; Figure 2 for Figure 1 A sectional view; Figure 3 for Figure 2 Side view; Figure 4 for Figure 3 Enlarged view of point A in the middle. Detailed Implementation

[0016] The following detailed description illustrates the specific implementation methods: The reference numerals in the accompanying drawings include: muffler air guide shroud 1, exhaust window 2, rear end cover 3, annular groove 301, exhaust sealing ring 4, protruding annular edge 401, lip 5, sealing ring 6, flexible connector 7, columnar part 701, and conical part 702.

[0017] Example 1 like Figure 1-4 As shown, a silent generator exhaust sealing structure includes a muffler shroud 1, an exhaust window 2, a rear end cover 3, and an exhaust sealing ring 4. The exhaust window 2 is detachably connected to the rear end cover 3, and the rear end cover 3 is tightly fitted with the outer side of the exhaust sealing ring 4. A lip 5 is provided on the inner side of the exhaust sealing ring 4. A sealing ring 6 is provided on the muffler shroud 1, and the lip 5 and the sealing ring 6 are detachably assembled together by a flexible connector 7.

[0018] The rear end cover 3 is provided with an annular groove 301, and the outer side of the exhaust sealing ring 4 is provided with a protruding annular edge 401 that cooperates with the annular groove 301.

[0019] The exhaust window 2 presses the protruding ring edge 401 of the exhaust sealing ring 4 into the ring groove 301. This structure can keep the protruding ring edge 401 and the ring groove 301 in close contact at all times, and the vibration or displacement generated by the engine during operation cannot separate the protruding ring edge 401 from the ring groove 301.

[0020] The sealing ring 6 has several holes, and the lip 5 has a flexible connector 7 corresponding to the several holes on the contact surface with the sealing ring 6. The lip 5 and the sealing ring 6 are connected to the exhaust sealing ring 4 and the muffler air guide shroud 1 through the holes via the flexible connector 7.

[0021] The flexible connector 7 includes a columnar portion 701 and a conical portion 702. The conical portion 702 is located in the middle of the columnar portion 701. The gap between the conical portion 702 and the lip 5 is used to fix the muffler air guide shroud 1. The flexible connector 7 is part of the exhaust sealing ring 4 and is made of the same material.

[0022] The exhaust sealing ring 4 has a U-shaped cross-section. During engine operation, the U-shaped structure can make way, and even if a certain amount of displacement fluctuation occurs, its sealing performance can be guaranteed.

[0023] The above descriptions are merely embodiments of this utility model. Commonly known structures and characteristics are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field prior to the application date or priority date, are knowledgeable of all existing technologies in that field, and possess the ability to apply conventional experimental methods prior to that date. Therefore, those skilled in the art can, based on the guidance provided in this application, improve and implement this solution in conjunction with their own capabilities. Typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A silent generator exhaust sealing structure, comprising a muffler shroud, an exhaust window, a rear end cover, and an exhaust sealing ring, wherein the exhaust window is connected to the rear end cover, and the exhaust sealing ring is tightly fitted onto the rear end cover, characterized in that... The exhaust sealing ring has a lip on its inner side, and the muffler air guide is provided with a sealing ring. The lip and the sealing ring are detachably connected by a flexible connector.

2. The silent generator exhaust sealing structure according to claim 1, characterized in that: The rear end cover is provided with an annular groove, and the exhaust sealing ring is provided with a protruding annular edge that mates with the annular groove.

3. The silent generator exhaust sealing structure according to claim 2, characterized in that: The exhaust window presses the protruding ring edge of the exhaust sealing ring into the ring groove.

4. The silent generator exhaust sealing structure according to claim 3, characterized in that: The sealing ring has a plurality of holes, and the lip has a flexible connector corresponding to the plurality of holes on the contact surface with the sealing ring. The lip and the sealing ring are connected by the flexible connector passing through the holes.

5. The silent generator exhaust sealing structure according to claim 4, characterized in that: The flexible connector includes a columnar portion and a conical portion, with the conical portion located in the middle of the columnar portion. The gap between the conical portion and the lip is used to fix the muffler air guide cover.

6. The silent generator exhaust sealing structure according to claim 5, characterized in that: The cross-sectional shape of the exhaust sealing ring is U-shaped, wavy, or bent.

7. The silent generator exhaust sealing structure according to claim 6, characterized in that: The exhaust vent is detachably attached to the rear cover.

Images