Air-exhausting, noise-reducing and constant-temperature heat-dissipating system

Abstract

The utility model discloses an exhaust noise reduction constant temperature heat dissipation system, which comprises a mute box body, a partition plate is arranged in the mute box body to divide the mute box body into a unit chamber and a heat dissipation chamber, the unit chamber is provided with an air inlet port, the heat dissipation chamber is provided with an exhaust port, and the partition plate is provided with a communication port for communicating the unit chamber with the heat dissipation chamber. By means of the arrangement, due to the fact that the impedance combined type noise elimination channel is arranged at the position of the communication opening, when air in the unit cavity is pumped to the heat dissipation cavity, the impedance combined type noise elimination channel can block or consume sound waves in the box body, noise in the unit cavity is effectively prevented from leaking out, and noise in the unit cavity can be effectively eliminated. Therefore, sound insulation and noise reduction of the mute box body are realized.

Description

Technical Field

[0001] The utility model relates to the technical field of heat dissipation and noise reduction equipment, in particular to an exhaust noise reduction constant temperature heat dissipation system. Background Art

[0002] At present, silent units are mainly water-cooled units, and their heat dissipation structures are mainly divided into two types. One heat dissipation method is that the heat of the unit is discharged from the outside of the box through two ways. Specifically, the internal heat of components such as diesel engines, generators, and power modules is discharged from the box through heat exchange through a water-cooled radiator, and the radiated heat from the surface of components in the box is discharged from the outside of the box through a cooling fan. The other heat dissipation method is that the internal heat of components such as diesel engines, generators, and power modules is discharged from the box through heat exchange through a water-cooled radiator, and the radiated heat from the surface of the components is directly discharged into the box.

[0003] The first heat dissipation method generally uses an axial flow fan to squeeze low-temperature air into the box to squeeze the radiant heat out of the box, or uses an axial flow fan (or centrifugal fan) to extract the hot air from the box. Both forms need to consider extreme use conditions when designing. Therefore, a larger air inlet port and exhaust port must be reserved when the box is made. In order to reduce the sound leakage in the box, a labyrinth air duct must be set at the air inlet port and the exhaust port, which will increase the wind resistance. In addition, a high-speed, high-static pressure, and high-noise fan must be used for heat dissipation, resulting in a large overall noise of the unit, which cannot effectively solve the contradiction between the sound leakage in the box, the excessive noise of the fan body, and the internal heat dissipation capacity. In addition, when selecting the heat dissipation fan in the box of this structure, it is selected with reference to extreme use conditions (full power, the temperature rise in the box does not exceed 15°C). This results in a slow increase in the temperature of the internal components when the load is light and the ambient temperature is low (especially -40°C), which seriously affects the reliability and usability of the unit.

[0004] The second heat dissipation method uses the box as a basic closed type (only the air inlet is reserved for the diesel engine air filter), which solves the problems of noise leakage in the box and excessive noise of the cooling fan. However, the radiated heat from the components in the box cannot be discharged, causing the heat in the box to accumulate continuously, resulting in the temperature in the box being about 50°C higher than the ambient temperature, and the local temperature being higher than 100°C. Since the components in the box contain a large number of rubber and plastic parts, the normal operating temperature limit is required to be lower than 70°C (or even lower). This greatly increases the failure rate during the use of the unit, accelerates the aging of rubber and plastic parts, and reduces their service life. Summary of the invention

[0005] The purpose of the utility model is to address the technical problems existing in the background technology and to propose an exhaust, noise reduction, constant temperature and heat dissipation system, comprising a soundproof box body, a partition is arranged inside the soundproof box body to separate the soundproof box body into a unit chamber and a heat dissipation chamber, the unit chamber is provided with an air inlet port, the heat dissipation chamber is provided with an exhaust port, the partition is provided with a connecting port connecting the unit chamber and the heat dissipation chamber, and an impedance composite silencer channel is provided at the connecting port.

[0006] Furthermore, a duct baffle is provided on the side of the partition facing the unit chamber, and a resistive silencer duct and a reactive silencer air cavity are formed between the duct baffle and the partition. One end of the resistive silencer duct is connected to the unit chamber, and the other end is connected to the reactive silencer air cavity. The reactive silencer air cavity is connected to the heat dissipation cavity. The resistive silencer duct and the reactive silencer air cavity are used to form an impedance composite silencer channel.

[0007] Further, the air duct baffle includes a first baffle unit and a second baffle unit, the first baffle unit extends a bent portion outward at one end, and the second baffle unit is connected to the bent portion;

[0008] A resistive sound-absorbing air duct is formed between the first baffle unit and the partition, a resistant sound-absorbing air cavity is formed between the second baffle unit and the partition, and the connecting port is arranged facing the resistant sound-absorbing air cavity.

[0009] Furthermore, it also includes an axial flow fan, which is arranged at the connecting port.

[0010] Furthermore, it also includes a temperature sensor and an axial flow fan main controller. The temperature sensor is arranged at the top of the unit chamber, and the axial flow fan main controller is arranged in the heat dissipation chamber. The temperature sensor is communicatively connected to the axial flow fan main controller, and the axial flow fan main controller is communicatively connected to the axial flow fan.

[0011] Furthermore, the heat dissipation chamber is also provided with a water-cooled radiator, and the water-cooled radiator is used for water-cooling the unit in the unit chamber.

[0012] Furthermore, a radiator main controller is also provided in the heat dissipation chamber, and the radiator main controller is communicatively connected with the water-cooled radiator.

[0013] Compared with the prior art, the utility model has the following beneficial technical effects: the utility model arranges an impedance composite silencer channel at the connecting port, and when the air in the unit chamber is extracted to the heat dissipation chamber, the impedance composite silencer channel can effectively block the leakage of noise from the unit chamber. Furthermore, the utility model arranges a temperature sensor in the unit chamber, and the axial fan main controller can adjust the axial fan power supply duty cycle according to the signal transmitted by the sensor to change the axial fan speed, so as to keep the temperature inside the box constant. This can solve the technical problem that the temperature inside the unit box is too low and the function of the device is affected in a low-temperature environment, and can also solve the technical problem that the temperature inside the box is too high and the reliability is reduced due to device failure in a high-temperature environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the composition of the utility model;

[0015] Figure 2 This is a schematic diagram of the heat dissipation air flow of the utility model;

[0016] Figure 3 It is a schematic diagram of compartment partitioning;

[0017] Figure 4 Schematic diagram of the silencer channel. DETAILED DESCRIPTION

[0018] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0019] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or a specific connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0021] The specific embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0022] like Figure 1-Figure 4 As shown, the utility model proposes an exhaust, noise reduction, constant temperature and heat dissipation system, including a soundproof box 1, a partition 11 is arranged in the soundproof box 1, the partition 11 divides the soundproof box 1 into a unit chamber 111 and a heat dissipation chamber 112, and a unit is arranged in the unit chamber 111, such as a water-cooled generator 18 and a water-cooled engine 19. Furthermore, the unit chamber 111 is also provided with an air inlet port 113, and the heat dissipation chamber 112 is provided with an exhaust port 114. The partition 11 is provided with a connecting port 115 connecting the unit chamber 111 and the heat dissipation chamber 112, and an impedance composite silencer channel 12 is provided at the connecting port 115.

[0023] When the unit is working, the surface radiation heat generated by the water-cooled generator 18 and the water-cooled engine 19 will be dissipated into the unit chamber 111, causing the temperature of the unit chamber 111 to rise rapidly. If the heat is not discharged in time, the devices in the unit chamber 111 will not work normally. Therefore, it is necessary to extract the hot air in the unit chamber 111. Specifically, the hot air in the unit chamber 111 can pass through the impedance composite silencer channel 12 and enter the heat dissipation chamber 112 through the connecting port 115. The hot air entering the heat dissipation chamber 112 is then discharged to the external environment through the exhaust port 114. Since the air in the unit chamber 111 is discharged, a pressure difference is generated between the unit chamber 111 and the external environment. The external cold air will enter the unit chamber 111 from the air inlet port 113, realizing heat exchange between the inside and outside of the silent box, thereby reducing the temperature in the unit chamber 111.

[0024] It can be understood that the utility model sets an impedance composite silencer channel 12 at the connecting port 115. When the air in the unit chamber 111 is extracted to the heat dissipation chamber 112, the impedance composite silencer channel 12 can block or consume the sound waves inside the box, effectively blocking the noise in the unit chamber 111 from leaking out, so as to achieve sound insulation and noise reduction of the silent box.

[0025] Furthermore, in the present embodiment, a duct baffle 121 is provided on the side of the partition 11 facing the unit chamber 111, and a resistive silencer duct 123 and a reactive silencer air cavity 124 are formed between the duct baffle 121 and the partition 11. One end of the resistive silencer duct 123 is connected to the unit chamber 111, and the other end is connected to the reactive silencer air cavity 124. The reactive silencer air cavity 124 is connected to the heat dissipation chamber 112. The resistive silencer duct 123 and the reactive silencer air cavity 124 are used to constitute an impedance composite silencer channel 12.

[0026] Specifically, the air duct baffle 121 includes a first baffle unit 1211 and a second baffle unit 1212. The first baffle unit 1211 extends a bending portion 1213 outward at one end, and the second baffle unit 1212 is connected to the bending portion 1213. A resistive sound-absorbing air duct 123 is formed between the first baffle unit 1211 and the partition 11, and a resistant sound-absorbing wind cavity 124 is formed between the second baffle unit 1212 and the partition 11. The connecting port 115 is arranged in the resistant sound-absorbing wind cavity 124.

[0027] Through the above settings, according to the impedance composite principle, the resistive silencer air duct 123 can weaken the medium and high frequency noise waves generated by the unit, and the reactive silencer air chamber 124 can weaken the low and medium frequency noise waves generated by the unit, thereby weakening or even eliminating the full-band noise generated by the unit, thereby achieving the purpose of exhaust noise reduction.

[0028] Furthermore, in the present embodiment, an axial flow fan 13 is provided at the connecting port 115 as a power for extracting air from the unit chamber 111. Furthermore, the present utility model also includes a temperature sensor 14 and an axial flow fan main controller 15. The temperature sensor 14 is provided at the top of the unit chamber 111, and the axial flow fan main controller 15 is provided in the heat dissipation chamber 112. The temperature sensor 14 is communicatively connected to the axial flow fan main controller 15, and the axial flow fan main controller 15 is communicatively connected to the axial flow fan 13.

[0029] According to the principle of thermal expansion and contraction of air, hot air is mainly concentrated in the upper part of the unit chamber 111. By arranging a temperature sensor 14 on the top of the unit chamber 111, the maximum temperature of the unit chamber 111 can be monitored in real time. The temperature sensor 14 can transmit the monitoring data to the axial flow fan main controller 15. The axial flow fan main controller 15 can compare the temperature and power supply curve according to its internal program, so as to control the air volume of the axial flow fan 13, so that the internal temperature of the static unit chamber 111 is maintained at a constant temperature.

[0030] Furthermore, in this embodiment, the heat dissipation chamber 112 is also provided with a water-cooled radiator 16, which is connected to the unit in the unit chamber 111. A radiator main controller 17 is also provided in the heat dissipation chamber 112, and the radiator main controller 17 is communicatively connected to the water-cooled radiator 16.

[0031] Through the above settings, the water-cooled radiator 16 can be used to achieve water-cooled heat dissipation of the unit to reduce the internal heat of the unit. Furthermore, the water-cooled radiator 16 can transmit its internal coolant temperature parameters to the radiator master controller 17. The radiator master controller 17 can control the heat dissipation capacity of the water-cooled radiator 16 according to its internal program settings, so as to keep the internal temperature of the unit constant and extend the service life.

[0032] Furthermore, since the heat generated by the main heat source of the unit can be discharged from the silent box by the water-cooled radiator 16, the axial flow fan 13 only needs to discharge the surface radiation heat generated by the unit. Therefore, when the axial flow fan 13 is used, a silent, low-speed axial flow fan can be selected. At the same time, multiple axial flow fans can be selected to work in parallel according to the power size of the unit.

[0033] In summary, the utility model sets an impedance composite silencer channel 12 at the connecting port. When the air in the unit chamber 111 is extracted to the heat dissipation chamber 112, the impedance composite silencer channel 12 can effectively block the noise leakage of the unit chamber 111. Furthermore, the utility model sets a temperature sensor 14 in the unit chamber 111. The axial fan main controller 15 can adjust the power supply duty cycle of the axial fan 13 according to the signal transmitted by the temperature sensor 14 to change the axial fan speed, so as to keep the temperature inside the box constant. This can solve the technical problem that the temperature inside the unit box is too low and the function of the device is affected in a low temperature environment, and can also solve the technical problem of device failure and reliability reduction caused by the excessively high temperature inside the box in a high temperature environment.

[0034] The above are one or more implementation methods provided in combination with specific content, and it is not intended that the specific implementation of the utility model is limited to these descriptions. Any method, structure, etc. similar to or identical to the method, structure, etc. of the utility model, or any technical deduction or replacement based on the concept of the utility model, shall be deemed to be within the protection scope of the utility model.

Claims

1. An exhaust noise reduction constant temperature heat dissipation system, characterized in that: The invention comprises a soundproof box (1), wherein a partition (11) is arranged inside the soundproof box (1) to separate the soundproof box (1) into a unit chamber (111) and a heat dissipation chamber (112), wherein the unit chamber (111) is provided with an air inlet port (113), and the heat dissipation chamber (112) is provided with an air exhaust port (114), and the partition (11) is provided with a connecting port (115) for connecting the unit chamber (111) and the heat dissipation chamber (112), and an impedance composite sound-absorbing channel (12) is provided at the connecting port (115).

2. The exhaust noise reduction constant temperature heat dissipation system according to claim 1, characterized in that: The partition (11) is provided with an air duct baffle (121) on the side facing the unit chamber (111); a resistive silencer air duct (123) and a reactive silencer air cavity (124) are formed between the air duct baffle (121) and the partition (11); one end of the resistive silencer air duct (123) is connected to the unit chamber (111), and the other end is connected to the reactive silencer air cavity (124); the reactive silencer air cavity (124) is connected to the heat dissipation chamber (112); the resistive silencer air duct (123) and the reactive silencer air cavity (124) are used to form the impedance composite silencer channel (12).

3. The exhaust noise reduction constant temperature heat dissipation system according to claim 2, characterized in that: The air duct baffle (121) comprises a first baffle unit (1211) and a second baffle unit (1212); the first baffle unit (1211) has a bent portion (1213) extending outward at one end, and the second baffle unit (1212) is connected to the bent portion (1213); A resistive sound-absorbing air duct (123) is formed between the first baffle unit (1211) and the partition (11), a resistant sound-absorbing air cavity (124) is formed between the second baffle unit (1212) and the partition (11), and the connecting port (115) is arranged facing the resistant sound-absorbing air cavity (124).

4. The exhaust noise reduction constant temperature heat dissipation system according to claim 3, characterized in that: It also includes an axial flow fan (13), wherein the axial flow fan (13) is arranged at the communication port (115).

5. The exhaust noise reduction constant temperature heat dissipation system according to claim 4, characterized in that: The invention also comprises a temperature sensor (14) and an axial flow fan main controller (15), wherein the temperature sensor (14) is arranged at the top of the unit chamber (111), and the axial flow fan main controller (15) is arranged in the heat dissipation chamber (112), the temperature sensor (14) is communicatively connected to the axial flow fan main controller (15), and the axial flow fan main controller (15) is communicatively connected to the axial flow fan (13).

6. The exhaust noise reduction constant temperature heat dissipation system according to claim 1, characterized in that: The heat dissipation chamber (112) is also provided with a water-cooling radiator (16), and the water-cooling radiator (16) is used to water-cool the unit in the unit chamber (111) to dissipate heat.

7. The exhaust noise reduction constant temperature heat dissipation system according to claim 6, characterized in that: A radiator main controller (17) is also provided in the heat dissipation chamber (112), and the radiator main controller (17) is communicatively connected to the water-cooled radiator (16).

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