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CN-122001139-A - Low-motor temperature rise mute generator set based on cold and hot cavity isolation

CN122001139ACN 122001139 ACN122001139 ACN 122001139ACN-122001139-A

Abstract

The invention provides a low-motor temperature rise mute generator set based on cold and hot cavity isolation, which belongs to the technical field of generator sets and comprises a base, a protective shell, an air inlet baffle plate, a motor heat shield, an engine, a muffler, a control panel, a motor, a power output end and a muffler, wherein the protective shell is arranged at the top end of the base, the air inlet baffle plate is vertically arranged at the top end of the base and divides the front part of the protective shell into a front cold cavity, the motor heat shield is arranged at the top end of the base and divides the interior of the base into a rear cold cavity, the area from the outside to the air inlet baffle plate is divided into a hot cavity, the motor is arranged at the top end of the base and is positioned in the rear cold cavity, the engine is arranged at the top end of the base and is provided with a plurality of power heat dissipation openings towards the rear sealing plate, the muffler is arranged at the top end of the base and is arranged at the edge of the engine, and the control panel is arranged at the front face of the front sealing plate and is connected with the motor, the engine and the muffler. The invention has the advantages of greatly improving the generating efficiency and the long-term operation reliability of the unit.

Inventors

  • LIN SEN

Assignees

  • 福建永强力加动力设备有限公司

Dates

Publication Date
20260508
Application Date
20260119

Claims (10)

  1. 1. A low-motor temperature rise mute generator set based on cold and hot cavity isolation is characterized by comprising: A plurality of rear cooling cavity air inlets are arranged in the rear vertical direction of the base; The protective shell comprises a rear sealing plate, a front sealing plate, two soundproof door plates and an upper cover plate, wherein the rear sealing plate is arranged behind the top end of the base, the front sealing plate is arranged in front of the top end of the base, the two soundproof door plates are arranged on the left side and the right side of the top end of the base, the upper cover plate is arranged on the top ends of the rear sealing plate, the front sealing plate and the soundproof door plates, a plurality of front cold cavity air inlets are arranged on the side face of the front sealing plate, and a plurality of hot cavity air outlets are arranged on the back face of the rear sealing plate; An air inlet baffle plate is vertically arranged at the top end of the base and is parallel to the front sealing plate and is close to the front sealing plate, and the front part of the protective shell is divided into a front cooling cavity; the motor heat shield is arranged at the top end of the base, is attached to the rear sealing plate, covers the rear cooling cavity air inlet, divides the interior into a rear cooling cavity, and divides the region from the exterior to the air inlet partition plate into a hot cavity; the motor is arranged at the top end of the base and is positioned in the rear cooling cavity; The engine is arranged at the top end of the base, is positioned in the thermal cavity, and the power output end is connected with the motor and is provided with a plurality of power heat dissipation ports towards the rear sealing plate; The muffler is arranged at the top end of the base and is positioned on the side of the engine; And the control panel is arranged on the front surface of the front sealing plate and is connected with the motor, the engine and the muffler.
  2. 2. The low-motor temperature rise mute generator set based on cold and hot cavity isolation according to claim 1, wherein a circle of protection fence is arranged in front of the base and in the side direction, and four universal wheels positioned in the protection fence are symmetrically arranged at the bottom.
  3. 3. The low-motor temperature rise mute generator set based on cold and hot cavity isolation according to claim 2 is characterized in that two universal wheels positioned at the rear are provided with a braking mechanism, and two avoidance inclination angles for operating the braking mechanism are arranged at the rear of the protection enclosure.
  4. 4. The low-temperature-rise mute generator set based on cold and hot cavity isolation according to claim 1, wherein the rear sealing plate is provided with a detachably connected motor maintenance plate.
  5. 5. The low-motor temperature rise mute generator set based on cold and hot cavity isolation according to claim 1, wherein the front sealing plate is provided with a power maintaining plate which is detachably connected.
  6. 6. The low-motor temperature rise mute electric generating set based on cold and hot cavity isolation according to claim 1, wherein the soundproof door plate is rotatably connected with the rear sealing plate.
  7. 7. The low-motor temperature rise mute generator set based on cold and hot cavity isolation according to claim 1, wherein the upper cover plate is provided with an oil filler.
  8. 8. The low-motor temperature rise mute generator set based on cold and hot cavity isolation according to claim 1, wherein the air inlet partition plate is provided with a plurality of partition plate air inlets.
  9. 9. The low-motor temperature rise mute generator set based on cold and hot cavity isolation according to claim 1, wherein the motor comprises: the stator is arranged at the top end of the base and is positioned in the rear cooling cavity; a rotor installed at a middle portion of the stator; The motor front end cover is arranged in front of the stator, is positioned in the thermal cavity, and is provided with a plurality of motor heat dissipation ports on the side surface; And the motor rear end cover is arranged at the rear of the stator and is provided with a plurality of motor air inlets.
  10. 10. The low-motor temperature rise mute generator set based on cold and hot cavity isolation according to claim 1, wherein the motor heat shield comprises: A motor upper clamping groove is arranged in front of the cover body; The motor front end cover of the motor extends out of the motor heat shield through the motor upper clamping groove and the motor lower clamping groove.

Description

Low-motor temperature rise mute generator set based on cold and hot cavity isolation Technical Field The invention relates to the technical field of generator sets, in particular to a low-motor temperature rise mute generator set based on cold and hot cavity isolation. Background The mute generator set reduces running noise by arranging the sound insulation cover body, but the existence of the cover body also limits the dissipation of internal heat, so that the problem of internal temperature rise of the generator set is particularly outstanding. When the generator set is in operation, the engine and the motor are both main heat sources, and a large amount of waste heat can be generated. How to effectively manage the heat and ensure the normal working temperature of each component, especially the motor, is a key technical problem in the design of the mute generator set. In the existing silent generator set design, a partition plate is generally adopted to divide the interior of the generator set into a relatively independent cold cavity and a relatively independent hot cavity. A typical layout mode is that a power (engine) air inlet is arranged in a cold cavity to ensure that low-temperature air is sucked, and meanwhile, the air inlet at a rear end cover of a motor is led to the cold cavity through a baffle plate to obtain cooling air. However, this conventional design suffers from the significant disadvantage that, although the cooling intake air to the motor comes from the cold chamber, the core heat generating components of the motor, i.e., the stator and rotor assemblies (including the stator windings and rotor windings), remain entirely within the same "hot chamber" space as the heat source of the engine, muffler, etc. As generator sets are developed to be high-powered, the strength of waste heat generated by the engine and the motor continues to increase, resulting in a sharp rise in the ambient temperature within the thermal cavity. The motor stator and rotor assembly in the thermal cavity not only needs to emit heat generated by self work, but also is continuously baked by surrounding high-temperature waste gas environment, thus forming the unfavorable situation of bidirectional heating. This directly results in a significant increase in the overall operating temperature of the motor. The temperature rise of the motor is a key index for measuring the performance and the reliability of the generator set. The excessively high temperature can bring a series of serious consequences, namely firstly, the resistance of a motor winding increases along with the temperature rise according to the characteristics of conductor resistance, so that copper loss is increased, and the power generation efficiency is obviously reduced, and secondly, the excessively high temperature can accelerate the aging of insulating materials of the motor, and when the temperature rise exceeds the heat resistance level of the insulating materials, faults such as insulation breakdown, winding short circuit and the like can be caused, so that the service life of the motor and even the whole generator set is seriously shortened. Therefore, how to provide a low-motor temperature rise mute generator set based on cold and hot cavity isolation, to fundamentally solve the problem of overhigh motor temperature rise in a high-power mute generator set, thereby improving the generating efficiency and long-term operation reliability of the generator set, and becoming a technical problem to be solved urgently. Disclosure of Invention The invention aims to solve the technical problem of providing a low-motor temperature rise mute generator set based on cold and hot cavity isolation, which can fundamentally solve the problem of overhigh motor temperature rise in a high-power mute generator set, thereby improving the generating efficiency and long-term operation reliability of the generator set. The invention discloses a low-motor temperature rise mute generator set based on cold and hot cavity isolation, which comprises: A plurality of rear cooling cavity air inlets are arranged in the rear vertical direction of the base; The protective shell comprises a rear sealing plate, a front sealing plate, two soundproof door plates and an upper cover plate, wherein the rear sealing plate is arranged behind the top end of the base, the front sealing plate is arranged in front of the top end of the base, the two soundproof door plates are arranged on the left side and the right side of the top end of the base, the upper cover plate is arranged on the top ends of the rear sealing plate, the front sealing plate and the soundproof door plates, a plurality of front cold cavity air inlets are arranged on the side face of the front sealing plate, and a plurality of hot cavity air outlets are arranged on the back face of the rear sealing plate; An air inlet baffle plate is vertically arranged at the top end of the base and is parallel to the front sealing plate and