Enclosed generator

Abstract

The utility model discloses a closed generator which comprises a shell, the shell is provided with an air inlet window, a power unit, a power generation unit, a first cooling fan and a silencer unit are arranged in the shell, a first wind scooper covering the outer sides of the power unit and the first cooling fan is arranged in the shell, and a second wind scooper covering the outer sides of the power unit and the first cooling fan is arranged in the shell. The first wind scooper is provided with an air inlet matched with the first cooling fan, a second wind scooper covering the outer side of the silencer unit is arranged in the shell, the air inlet end of the second wind scooper is communicated with the first wind scooper, the air outlet end of the second wind scooper is communicated with the outside of the shell, and a heat insulation cavity is formed between the first wind scooper and the shell. The first wind scooper is provided with a first air outlet matched with the first cooling fan and communicated with the heat insulation cavity, and the shell is provided with a second air outlet used for communicating the heat insulation cavity with the outside of the shell. According to the scheme, the problem that in the prior art, the temperature of a shell of a closed generator is prone to being too high is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the generator that combustion engine is the power, concretely is a closed type generator. BACKGROUND

[0002] The closed type generator is a kind of generator, such as the common silent generator, which belongs to the closed type generator, with main functional components being arranged inside the shell with ventilation opening in local part.The heat dissipation problem of closed type generator has been a problem that each manufacturer needs to solve.

[0003] Chinese patent document CN213870070U discloses a generator set, comprising a cabinet, an engine, a generator, a silencer and an air filter, the cabinet is provided with a partition plate, the partition plate separates the inner cavity of the cabinet into a first containing cavity and a second containing cavity, the engine, the generator and the silencer are located in the first containing cavity, the air filter is located in the second containing cavity, the air filter is connected with the air inlet pipe of the engine through a connecting pipe, the cabinet is provided with an air inlet, the air inlet is used for allowing external air to enter the second containing cavity. The beneficial effects of the prior art scheme are: when the generator set is working, the external cold air enters the second containing cavity from the air inlet, then the air in the second containing cavity enters the engine through the air filter and the connecting pipe in turn, providing oxygen for the combustion of fuel in the engine; under the separation effect of the partition plate, the hot air in the first containing cavity cannot enter the second containing cavity, so that the air temperature in the second containing cavity is relatively low, and the air with high temperature in the first containing cavity is not easy to heat the air filter, thereby the temperature of the air entering the engine through the air filter is relatively low, which can reduce the temperature of the engine and improve the working efficiency of the engine.

[0004] Chinese patent document CN201025685Y discloses a portable digital variable frequency generator set, which comprises a left half machine shell, a right half machine shell, an engine, a generator, a cooling fan, a silencer and an inverter. The engine is connected with the generator and the right cooling fan at the right output end, and is connected with the left cooling fan and a starting pull plate at the left output end. The silencer is arranged on the upper part of the generator. The lower parts of the left half machine shell and the right half machine shell are provided with a shell bottom plate, and the engine, the generator and the inverter are arranged on the shell bottom plate. An engine wind guide cover is arranged outside the engine, a silencer cover is arranged outside the silencer, and a generator cover is arranged outside the generator. The beneficial effects of the prior art scheme are that the set has two heat generating parts, which are the engine and the generator, and the engine, the silencer and the generator are isolated by using the engine wind guide cover, the silencer cover and the generator cover, so that the heat generated by the two parts is discharged from the machine shell respectively, and the air currents generated by the two parts flow separately without disturbance, thereby fully reducing the temperature in the machine shell.

[0005] The prior art scheme solves the heat dissipation problem of the closed generator to some extent, but it is found that the shell of the generator is prone to have a temperature too high during use. Practical new type content

[0006] The utility model discloses a closed generator, which solves the problem that the shell of the closed generator in the prior art is prone to have a temperature too high.

[0007] In order to achieve the above-mentioned purpose, the basic scheme of the utility model provides a closed generator, which comprises a shell, the shell is provided with an air inlet window, the inside of the shell is provided with a power unit, a power generation unit, a first cooling fan and a silencer unit, the inside of the shell is provided with a first air baffle cover which covers the outside of the power unit and the first cooling fan, the first air baffle cover is provided with an air inlet which cooperates with the first cooling fan, the inside of the shell is provided with a second air baffle cover which covers the outside of the silencer unit, the air inlet end of the second air baffle cover is communicated with the first air baffle cover, the air outlet end of the second air baffle cover is communicated with the outside of the shell, a heat insulation cavity is formed between the first air baffle cover and the shell, the first air baffle cover is provided with a first air outlet which cooperates with the first cooling fan and is communicated with the heat insulation cavity, and the shell is provided with a second air outlet for communicating the heat insulation cavity with the outside of the shell.

[0008] The beneficial effects of the basic scheme are that the first air baffle cover and the second air baffle cover block the heat radiation generated by the power unit and the silencer unit, the air outside the shell enters the first air baffle cover through the air inlet window and the air inlet in sequence under the action of the first cooling fan, and then enters the heat insulation cavity from the first air outlet, and finally the air in the heat insulation cavity is discharged from the second air outlet to take away the heat in the heat insulation cavity. Compared with the prior art, the first air baffle cover and the second air baffle cover block the heat radiation, and the heat insulation cavity has the air flow heat dissipation effect, so that the heat affecting the shell is greatly weakened, and the temperature of the shell is always kept in a low range, thereby avoiding the problem that the shell is prone to have a temperature too high.

[0009] Preferably, the first cooling fan is arranged on the side of the power unit close to the air inlet window, and the first air outlet is located on the side of the first air baffle cover close to the air inlet window and is located in the radial direction of the first cooling fan. With such an arrangement, the first cooling fan can timely guide the air coming from the air inlet window into the heat insulation cavity through the first air outlet, so that the air entering the heat insulation cavity is less affected by the heat of the power unit, and the air entering the heat insulation cavity can better take away the heat in the heat insulation cavity, thereby reducing the temperature of the heat insulation cavity and further reducing the temperature of the shell, and further avoiding the phenomenon that the shell has a temperature too high.

[0010] Preferably, in order to further avoid the phenomenon of the shell being too high in temperature, the second air outlet and the air outlet end of the second air baffle are arranged on the same side of the shell.

[0011] Preferably, the second air outlet is located at the upper portion and / or the lower portion of the shell.

[0012] Preferably, the power unit is located on the side of the power unit away from the first cooling fan, and a second cooling fan is arranged between the power unit and the power generation unit for guiding the airflow towards the air inlet end of the second air baffle. With such an arrangement, the first cooling fan and the second cooling fan can both cool the power unit, and the second cooling fan can also cool the power generation unit, thereby facilitating the cooling effect of the power unit and the power generation unit and improving the operation reliability of the generator.

[0013] Preferably, the second cooling fan is provided with a first fin group for guiding the airflow flowing through the power unit to the air inlet end of the second air baffle, and the second cooling fan is also provided with a second fin group for guiding the airflow flowing through the power generation unit to the air inlet end of the second air baffle. With such an arrangement, the first fin group and the second fin group can be designed according to the cooling requirements of the power unit and the power generation unit, respectively, to meet the differentiated cooling requirements of the power unit and the power generation unit, thereby further improving the cooling effect of the power unit and the power generation unit and further improving the operation reliability of the generator.

[0014] Preferably, the air inlet end of the second air baffle is located in the radial direction of the second cooling fan. With such an arrangement, the airflow flowing through the power unit and the power generation unit can more smoothly enter the second air baffle under the action of the second cooling fan, thereby further improving the cooling effect of the power unit and the power generation unit and enhancing the operation reliability of the generator.

[0015] Preferably, a partition is arranged between the first air baffle and the air inlet window, and a containing cavity is formed between the partition and the air inlet window, and a ventilation opening is arranged on the partition and matched with the air inlet. With such an arrangement, the air entering the shell from the air inlet window will first pass through the containing cavity, thereby keeping the temperature in the containing cavity at a low level, and facilitating the installation of components of the generator that are easily affected by temperature in the containing cavity, thereby improving the operation reliability of the generator.

[0016] Preferably, an air filter, a starting battery, and an oil condenser unit are arranged in the containing cavity. With such an arrangement, the operation reliability of the generator can be further improved.

[0017] Preferably, the oil condenser unit is located on the side of the housing near the air intake window. This arrangement improves the cooling effect of the oil condenser unit on the oil, thereby enhancing the operational reliability of the generator.

[0018] This utility model has the following beneficial effects:

[0019] 1. This solution uses the first and second air guide shrouds to block heat radiation, and combined with the heat dissipation effect of the airflow in the heat insulation cavity, it greatly reduces the heat impact on the shell, thereby keeping the shell temperature in a low range and avoiding the problem of the shell easily overheating.

[0020] 2. This solution improves the heat dissipation of the generator unit and the power unit by coordinating the first and second cooling fans. At the same time, the airflow is guided by the first and second air guide shrouds and the heat insulation cavity, which greatly improves the heat dissipation of the generator, thereby improving the operational reliability of the generator. Attached Figure Description

[0021] Figure 1 This is a schematic diagram showing the removal of part of the casing of an embodiment of the enclosed generator of this utility model;

[0022] Figure 2 for Figure 1 Axial section view. Detailed Implementation

[0023] The following detailed description illustrates the specific implementation method:

[0024] The reference numerals in the accompanying drawings include: housing 1, second air guide shroud 2, air inlet 21, air outlet 22, first air guide shroud 3, first air outlet 4, oil condenser unit 5, heat insulation cavity 6, silencer unit 7, power generation unit 8, power unit 9, first cooling fan 10, air inlet window 11, receiving cavity 12, partition 13, second cooling fan 14, second fin assembly 141, first fin assembly 142, air inlet 15, and second air outlet 16.

[0025] The basic implementation examples are as follows: Figure 1 and Figure 2 As shown: A closed generator includes a housing 1, which in this embodiment is rectangular in shape; the housing 1 is provided with an air inlet 11; the interior of the housing 1 is provided with a power unit 9, a generator unit 8, a first cooling fan 10, and a muffler unit 7. In this embodiment, the first cooling fan 10 is located on the side of the power unit 9 facing the air inlet 11, the generator unit 8 is located on the side of the power unit 9 away from the air inlet 11, and the muffler unit 7 is located above the generator unit 8.

[0026] The inside of the shell 1 is provided with a first air baffle 3 covering the outside of the power unit 9 and the first cooling fan 10, and the first air baffle 3 is provided with an air inlet 15 matched with the first cooling fan 10. In the embodiment, the air inlet 15 is located on the side of the first air baffle 3 facing the air inlet window 11. A heat insulation cavity 6 is formed between the first air baffle 3 and the shell 1, and the first air baffle 3 is provided with a first air outlet 4 matched with the first cooling fan 10 and communicated with the heat insulation cavity 6. In the embodiment, the first cooling fan 10 is a fan of axial air inlet and radial air outlet type; the first air outlet 4 is located on the side of the first air baffle 3 close to the air inlet window 11 and in the radial direction of the first cooling fan 10. The shell 1 is provided with a second air outlet 16 for communicating the heat insulation cavity 6 with the outside of the shell 1.

[0027] The inside of the shell 1 is provided with a second air baffle 2 covering the outside of the muffler unit 7, and the air inlet end 21 of the second air baffle 2 is communicated with the first air baffle 3, and the air outlet end 22 of the second air baffle 2 is communicated with the outside of the shell 1. The second air outlet 16 and the air outlet end 22 of the second air baffle 2 are arranged on the same side of the shell 1, so that the airflow in the heat insulation cavity 6 is discharged to the outside of the shell 1 through the gap between the second air baffle 2 and the shell 1. In the embodiment, the upper part and the lower part of the shell 1 are both provided with the second air outlet 16. Of course, in other embodiments, the second air outlet 16 can also be arranged only on the upper part or the lower part of the shell 1.

[0028] The power unit 9 and the power generation unit 8 are provided with a second cooling fan 14 for guiding the airflow towards the air inlet end 21 of the second air baffle 2. In the embodiment, the second cooling fan 14 is provided with a first fin group 142 for guiding the airflow flowing through the power unit 9 to the air inlet end 21 of the second air baffle 2, and the second cooling fan 14 is also provided with a second fin group 141 for guiding the airflow flowing through the power generation unit 8 to the air inlet end 21 of the second air baffle 2, so that the second cooling fan 14 forms a fan of axial air inlet and radial air outlet type. In the embodiment, the air inlet end 21 of the second air baffle 2 is located in the radial direction of the second cooling fan 14. The shell 1 is provided with an air inlet passage communicated with the end of the power generation unit 8 away from the second cooling fan 14, so as to facilitate the air outside the shell 1 to enter the surrounding of the power generation unit 8 for heat dissipation and cooling. In the embodiment, the air inlet passage is arranged on the side of the shell adjacent to the second air outlet.

[0029] The first air baffle 3 and the air inlet window 11 are provided with a partition plate 13, and the partition plate 13 and the air inlet window 11 form a containing cavity 12. The partition plate 13 is provided with a ventilation opening matched with the air inlet 15, so that the air entering the inside of the shell 1 from the air inlet window 11 passes through the containing cavity 12 and then enters the air inlet 15 of the first air baffle 3 through the ventilation opening. The containing cavity 12 is provided with an air filter, a starting battery and an oil condenser unit 5. The oil condenser unit 5 is arranged on one side of the containing cavity 12 close to the air inlet window, and the air filter is arranged on the upper part of the containing cavity 12.

[0030] The specific implementation process is as follows: when the generator is working, the power unit 9 drives the first cooling fan 10 to rotate, and the rotation of the first cooling fan 10 causes negative pressure at the air inlet 15 of the first air baffle 3, so that the air outside the shell 1 enters the first air baffle 3 through the air inlet window 11 and the containing cavity 12 under the action of the pressure difference, and the first cooling fan 10 discharges part of the air entering the first air baffle 3 from the first air outlet 4 to the heat insulation cavity 6. The air in the heat insulation cavity 6 is discharged from the second air outlet 16 to the outside of the shell 1 under the action of the pressure, so that the air carries away the heat in the heat insulation cavity 6, thereby avoiding the phenomenon that the temperature of the heat insulation cavity 6 is too high to cause the temperature of the shell 1 to be too high. When the power unit 9 is working, the second cooling fan 14 is driven to rotate, and when the second cooling fan 14 rotates, the first fin group 142 causes the air around the power unit 9 to flow towards the second cooling fan 14 to form a cooling air flow, and the second cooling fan 14 guides the air flow flowing through the power unit 9 to the air inlet end 21 of the second air baffle 2; similarly, when the second cooling fan 14 rotates, the second fin group 141 causes the air around the power unit 8 to flow towards the second cooling fan 14 to form a cooling air flow, and the second cooling fan 14 guides the air flow flowing through the power unit 8 to the air inlet end 21 of the second air baffle 2. The air entering the second air baffle 2 is discharged from the air outlet end 22 of the second air baffle 2 to the outside of the shell 1 under the action of the pressure, so that the air flow carries away the heat of the silencer. Compared with the prior art, the present scheme blocks the heat radiation through the first air baffle 3 and the second air baffle 2, and combines the air flow heat dissipation effect of the heat insulation cavity 6, so that the heat affecting the shell 1 is greatly weakened, thereby keeping the temperature of the shell 1 in a relatively low range, and avoiding the problem that the temperature of the shell 1 is too high. At the same time, through the cooperation of the first cooling fan 10 and the second cooling fan 14, the heat dissipation and cooling effect of the power unit 8, the power unit 9 and the electrical elements is improved, thereby improving the operation reliability of the enclosed generator.

[0031] The above only is the embodiment of the present application, and the well-known specific structure and characteristics and other common knowledge in the scheme are not described in detail here. It should be pointed out that for those skilled in the art, without departing from the structure of the present application, a number of variations and improvements can be made, which should also be considered as the protection scope of the present application, and these will not affect the effect and practicality of the present application.

Claims

1. A closed generator comprising a shell, the shell is provided with an air inlet window, the inside of the shell is provided with a power unit, a power generation unit, a first cooling fan and a muffler unit, the inside of the shell is provided with a first air guide cover covering the outside of the power unit and the first cooling fan, the first air guide cover is provided with an air inlet port matched with the first cooling fan, the inside of the shell is provided with a second air guide cover covering the outside of the muffler unit, the air inlet end of the second air guide cover is communicated with the first air guide cover, and the air outlet end of the second air guide cover is communicated with the outside of the shell, characterized in that: The first air deflector and the shell form a heat insulation cavity, the first air deflector is provided with a first air outlet matched with the first cooling fan and communicated with the heat insulation cavity, and the shell is provided with a second air outlet for communicating the heat insulation cavity with the outside of the shell.

2. A closed generator according to claim 1, characterized in that: The first cooling fan is arranged on the side of the power unit close to the air inlet window, and the first air outlet is located on the side of the first air deflector close to the air inlet window and in the radial direction of the first cooling fan.

3. A closed generator according to claim 2, characterized in that: The second air outlet and the air outlet end of the second air deflector are arranged on the same side of the shell.

4. A closed generator as claimed in claim 3, characterized in that: The second air outlet is located on the upper and / or lower part of the shell.

5. A closed generator as claimed in claim 1, 2, 3 or 4, characterised in that: The power unit is located on the side of the power unit away from the first cooling fan, and the power unit and the power generation unit are provided with a second cooling fan for guiding the airflow to the air inlet end of the second air deflector.

6. A closed generator according to claim 5, characterized in that: The second cooling fan is provided with a first fin group for guiding the airflow flowing through the power unit to the air inlet end of the second air deflector, and is also provided with a second fin group for guiding the airflow flowing through the power generation unit to the air inlet end of the second air deflector.

7. A closed generator according to claim 6, characterized in that: The air inlet end of the second air deflector is located in the radial direction of the second cooling fan.

8. A closed generator according to claim 7, characterized in that: A partition plate is arranged between the first air deflector and the air inlet window, a containing cavity is formed between the partition plate and the air inlet window, and a ventilation opening matched with the air inlet is arranged on the partition plate.

9. A closed generator according to claim 8, characterized in that: An air filter, a starting battery and an oil condenser unit are arranged in the containing cavity.

10. A closed generator as claimed in claim 9, characterized in that: The oil condenser unit is arranged on the side of the containing cavity close to the air inlet window.

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