Power device and generator

Abstract

The utility model discloses a power device and a generator. The power device comprises a rack, and an engine and a silencer are connected to the rack; the power wind scooper is arranged outside the engine in a covering mode, the silencing wind scooper is arranged outside the silencer in a covering mode, the silencing wind scooper is connected with the power wind scooper in a sealing mode, and the silencing wind scooper is flexibly connected with the power wind scooper. According to the scheme, the problem that in the prior art, a wind scooper of a silencer is prone to damage is solved.

Description

Technical Field

[0001] The utility model relates to a power device using a combustion engine as power.

[0002] The utility model also relates to a generator. Background Art

[0003] A power device is a device that uses a combustion engine as a power source and is used to drive various operating mechanisms. For example, it is set on a generator to drive a power generation unit to work and make the generator generate electricity. Existing power devices generally include an engine, a muffler connected to the exhaust port of the engine, a power air duct cover arranged outside the engine, and a muffler air duct cover arranged outside the muffler. The muffler air duct cover is sealed and fixedly connected to the power air duct cover to form an air guide channel, so that the airflow can take away the heat of the engine and the muffler when it flows through the power air duct cover and the muffler air duct cover in turn.

[0004] Chinese patent document CN210858944U discloses a variable frequency silent generator, including a muffler air guide cover, the muffler air guide cover includes a muffler air guide cover body, a muffler body is arranged in the inner cavity of the muffler air guide cover body, the muffler air guide cover body includes an inner shell and an outer shell, the edge of the inner shell is connected to the edge of the outer shell to form a muffler air guide cover body with an internal cavity; the muffler air guide cover body is connected to the shell assembly of the engine.

[0005] In the above scheme, the muffler air guide cover body is connected and fixed to the engine casing assembly, so the muffler air guide cover body will vibrate with the vibration of the engine, which may easily lead to damage to the muffler air guide cover such as failure of the exhaust port seal and falling off of the internal insulation parts, thereby reducing the insulation effect. Utility Model Content

[0006] The utility model aims to provide a power device to solve the problem that the air guide cover of the muffler is easily damaged in the prior art.

[0007] In order to achieve the above-mentioned purpose, the basic scheme of the utility model provides a power device, including a frame, to which an engine and a muffler are connected; it also includes a power air guide cover arranged on the outside of the engine and a silencer air guide cover arranged on the outside of the muffler, the silencer air guide cover is sealed and connected to the power air guide cover, and the silencer air guide cover is flexibly connected to the power air guide cover.

[0008] The beneficial effect of this basic solution is that when the power unit is working, the silencer air duct will not vibrate with the engine, thereby avoiding damage to the silencer air duct due to vibration, which is beneficial to extending the service life of the silencer air duct.

[0009] Preferably, the noise-absorbing air guide cover and the power air guide cover are sealed and connected via a flexible member. Such a configuration is helpful to reduce the difficulty of connecting the noise-absorbing air guide cover and the power air guide cover, thereby reducing the cost.

[0010] Preferably, the noise-absorbing air guide cover is sealed and fixedly connected with a bracket, the bracket is fixedly connected to the frame, a connection port is provided on the bracket, a gap for the power air guide cover to move is provided between the inner side of the connection port and the power air guide cover, and the flexible member is connected to the gap. With such a setting, the bracket is used to connect and support the noise-absorbing air guide cover and the flexible member, which not only facilitates the fixed support of the noise-absorbing air guide cover, but also facilitates the connection of the flexible member, thereby facilitating processing and manufacturing.

[0011] Preferably, the flexible member is a rubber ring with a groove-shaped cross section. With such a configuration, the deformation difficulty of the flexible joint is relatively low, thereby facilitating the improvement of the reliability of the flexible member.

[0012] Preferably, the frame includes a bottom plate and an upper shell, and the bracket is respectively sealed with the bottom plate and the upper shell to form a first chamber for accommodating the power air duct and a second chamber for accommodating the muffler air duct, and the first chamber and the second chamber are not connected to each other. With such an arrangement, the air heated by the muffler air duct in the second chamber is blocked by the bracket as much as possible and does not flow into the first chamber, thereby reducing the problem of unstable operation of the power device caused by excessive temperature in the first chamber, which is conducive to improving the operational reliability of the power device.

[0013] Preferably, the inner wall of the noise-absorbing air guide cover is connected and covered with a heat-insulating cotton layer. Such a setting is conducive to further improving the heat-insulating effect of the noise-absorbing air guide cover.

[0014] The utility model also provides a generator whose wind guide cover of the muffler is not easily damaged by vibration.

[0015] A generator comprises any one of the above-mentioned power devices.

[0016] The utility model has the following beneficial effects:

[0017] 1. Compared with the prior art, when the power device is working, the silencer air guide cover will not vibrate with the engine, thereby avoiding the silencer air guide cover from being damaged due to vibration, which is beneficial to extending the service life of the silencer air guide cover.

[0018] 2. The rubber ring used to achieve the flexible connection between the silencer air duct and the power air duct is less affected by the heat of the muffler, which is beneficial to prolong the service life, thereby improving the reliability of the flexible connection between the silencer air duct and the power air duct.

[0019] 3. The air heated by the silencer air duct is blocked by the bracket in the second chamber, thereby greatly reducing the temperature increase of the first chamber accommodating the power air duct. Compared with the prior art, the temperature of the internal space of the power device is significantly reduced, so that the temperature inside the generator is significantly reduced, which is beneficial to improving the reliability of the generator. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional schematic diagram of a generator embodiment of the utility model with the upper shell removed;

[0021] Figure 2 This is a schematic diagram of a generator of the utility model with the upper casing removed;

[0022] Figure 3 for Figure 2 Middle AA section view;

[0023] Figure 4 for Figure 3 Schematic diagram with the upper housing installed. DETAILED DESCRIPTION

[0024] The following is further described in detail through specific implementation methods:

[0025] The reference numerals in the drawings of the specification include: a silencer air guide cover 1, a bracket 2, a flexible member 3, a power air guide cover 4, a bottom plate 5, a muffler 6, an upper shell 7, a second chamber 8, and a first chamber 9.

[0026] The embodiment is basically as shown in the attached Figures 1 to 4 As shown: A generator includes a power device. In this embodiment, the power device includes a frame, an engine and a muffler 6 are connected to the frame, and the muffler 6 is connected and fixed to the exhaust end of the engine. In this embodiment, the frame includes a bottom plate 5 and an upper shell 7, and the upper shell 7 is buckled with the bottom plate 5 to form a cavity for accommodating the engine, the muffler 6 and various parts. The engine and the muffler 6 are supported on the bottom plate.

[0027] The outer cover of the engine is provided with a power air guide cover 4, and the outer cover of the muffler 6 is provided with a silencer air guide cover 1. The silencer air guide cover 1 is sealed and connected to the power air guide cover 4, and the silencer air guide cover 1 is flexibly connected to the power air guide cover 4 so that the silencer air guide cover 1 and the power air guide cover 4 can move relative to each other.

[0028] In the present embodiment, the sound-absorbing air duct 1 and the power air duct 4 are sealed and connected by a flexible member 3. The flexible member 3 may preferably be a flexible member 3 made of a rubber material. In the present embodiment, the sound-absorbing air duct 1 is sealed and fixedly connected with a bracket 2 at one end facing the power air duct 4, and the bracket 2 is fixedly connected to the frame, so that the sound-absorbing air duct 1 is connected and fixed to the frame through the bracket 2. In the present embodiment, the bracket 2 is sealed and fixedly connected to the base plate 5, and the side and top of the bracket 2 are respectively sealed and matched with the upper shell 7, thereby forming a first chamber 9 for accommodating the power air duct 4 and a second chamber 8 for accommodating the sound-absorbing air duct 1, and the first chamber 9 and the second chamber 8 are not connected to each other.

[0029] In this embodiment, a connecting port is provided on the bracket 2, and a gap is provided between the inner side of the connecting port and the power air guide hood 4 for the power air guide hood 4 to move. Through the setting of the gap, the power air guide hood 4 can move relative to the bracket 2 in the axial and radial directions of the connecting port.

[0030] In this embodiment, the flexible member 3 is connected to the gap, which is convenient for connecting and fixing the flexible member 3, and the deformation of the flexible member 3 is used to seal the gap when the power air guide 4 and the bracket 2 move relative to each other. In this embodiment, the flexible member 3 is a rubber ring with a groove-shaped cross section, which is conducive to improving the service life of the flexible member 3 while ensuring the reliability of the flexible member 3. The inner wall connection of the muffler air guide 1 is covered with a heat insulation cotton layer, which is conducive to improving the heat insulation effect of the muffler air guide 1.

[0031] By adopting this solution, compared with the prior art, the silencer air duct will not vibrate with the engine, thereby avoiding damage to the silencer air duct due to vibration, which is beneficial to extending the service life of the silencer air duct. The rubber ring used to achieve flexible connection between the silencer air duct and the power air duct is less affected by the heat of the muffler, which is beneficial to extending the service life, thereby facilitating improving the reliability of the flexible connection between the silencer air duct and the power air duct. The air heated by the silencer air duct is blocked by the bracket in the second chamber, thereby greatly reducing the temperature increase of the first chamber accommodating the power air duct. Compared with the prior art, the temperature of the internal space of the power device is significantly reduced, so that the temperature inside the generator is significantly reduced, which is beneficial to improving the reliability of the generator.

[0032] The above is only an embodiment of the utility model, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent.

Claims

1. A power device, comprising a frame, an engine and a muffler are connected to the frame; further comprising a power air guide cover arranged outside the engine and a muffler air guide cover arranged outside the muffler, the muffler air guide cover is sealed and connected to the power air guide cover, characterized in that: The noise-absorbing air guide cover is flexibly connected to the power air guide cover.

2. The power device according to claim 1, characterized in that: The noise-absorbing air guide cover and the power air guide cover are sealed and connected via a flexible member.

3. The power device according to claim 2, characterized in that: The silencer air guide cover is sealed and fixedly connected with a bracket, the bracket is fixedly connected to the frame, a connecting port is arranged on the bracket, a gap for the power air guide cover to move is arranged between the inner side of the connecting port and the power air guide cover, and the flexible member is connected at the gap.

4. The power device according to claim 3, characterized in that: The flexible member is a rubber ring with a groove-shaped cross section.

5. The power device according to claim 3 or 4, characterized in that: The frame includes a bottom plate and an upper shell, and the bracket is sealed with the bottom plate and the upper shell to form a first chamber for accommodating the power air duct cover and a second chamber for accommodating the sound-absorbing air duct cover, and the first chamber and the second chamber are not connected to each other.

6. The power device according to any one of claims 1 to 4, characterized in that: The inner wall of the noise-absorbing and air-guiding cover is connected and covered with a heat-insulating cotton layer.

7. A generator, characterized in that: Comprising a power device as described in any one of claims 1 to 6.

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