Unit roof composite exhaust device

Abstract

The utility model provides a kind of unit roof composite exhaust device, it is related to ventilation technical field.The utility model mainly comprises cyclone ventilator and fan by unit roof composite exhaust device, cyclone ventilator is installed on roof opening base, for natural exhaust;Cyclone ventilator includes turbine blade and air intake throat, fan is installed in air intake throat, for mechanical exhaust.The utility model integrates the advantages of natural exhaust and mechanical exhaust, can be realized natural exhaust by cyclone ventilator when there is wind, can be realized mechanical exhaust by fan when there is no wind, meets the needs of indoor ventilation, with the advantages of low energy consumption, low noise, ventilation effect stable.In addition, the utility model can also improve ventilation effect by the linkage mode of cyclone ventilator and fan blade.

Description

Technical Field

[0001] This utility model is specifically a unit-type roof composite ventilation device, which relates to the field of ventilation technology. Background Technology

[0002] Workshop ventilation typically employs two exhaust methods: one is natural ventilation, represented by cyclone ventilators. Cyclone ventilators (see national standard figure 06K105) have turbine blades that capture natural wind force to generate wind pressure, thereby achieving ventilation of the factory. The advantages of natural ventilation are continuous exhaust, no noise, and no energy consumption. The disadvantage is that it is easily affected by changes in the indoor and outdoor environment, resulting in unstable ventilation effects. The other method is mechanical ventilation, which uses fans to force ventilation of the factory. The advantages of mechanical ventilation are relatively stable exhaust volume, while the disadvantages are high noise and high energy consumption. Utility Model Content

[0003] To overcome the shortcomings of the prior art, this utility model discloses a unitized roof composite ventilation device, which adopts the following technical solution: A unit-type roof composite ventilation device mainly consists of a swirl ventilator and a fan. The swirl ventilator is installed on the foundation of the roof opening for natural ventilation. The swirl ventilator includes turbine blades and an air inlet throat, and the fan is installed inside the air inlet throat for mechanical ventilation.

[0004] Further improvements to the technical solution: The swirl ventilator also includes a bracket, a bearing housing, and a rotating shaft; the bracket is fixed to the upper part of the air inlet and is used to support the bearing housing; the rotating shaft is fixed on the axis of the turbine blades and is rotatably connected to the bearing housing.

[0005] Further improve the technical solution: The fan is mainly composed of a motor and fan blades. A connecting shaft is set between the fan blades and the rotating shaft. The fan blades are coaxially connected to the vortex ventilator through the connecting shaft and the rotating shaft. When the vortex ventilator rotates under the action of natural wind, the fan blades blow air upward.

[0006] Further technical improvement: A clockwise overrunning clutch is installed between the motor and the fan blades.

[0007] Further technical improvement: A counterclockwise overrunning clutch is installed between the connecting shaft and the fan blades.

[0008] Further improvement to the technical solution: A fixing bracket is installed between the motor and the air inlet.

[0009] After implementing the above technical solution, the beneficial effects of this utility model compared to the prior art are: This utility model integrates the advantages of natural ventilation and mechanical ventilation. When there is wind, natural ventilation can be achieved through a vortex ventilator, and when there is no wind, mechanical ventilation can be achieved through a fan, thus meeting the ventilation needs of the factory.

[0010] In addition, this invention can also improve the ventilation effect by linking the swirl ventilator with the fan blades.

[0011] This invention is unaffected by changes in indoor and outdoor environments and has the advantages of low energy consumption, low noise, and stable ventilation. Attached Figure Description

[0012] Appendix Figure 1 The diagram shown is a structural schematic of the composite exhaust device in Embodiment 1.

[0013] Appendix Figure 2 The diagram shown is a structural schematic of the composite exhaust device in Embodiment 2.

[0014] Appendix Figure 3 The diagram shown is a structural schematic of the composite exhaust device in Example 3.

[0015] In the attached diagram: 1. Swirl ventilator; 1.1. Turbine blades; 1.2. Shaft; 1.3. Bracket; 1.4. Bearing housing; 1.5. Air inlet; 1.6. Connecting shaft; 2. Fan; 2.1. Fan blades; 2.2. Motor; 2.3. Fixture; 2.4. Clockwise overrunning clutch; 2.5. Counterclockwise overrunning clutch; 3. Roof opening foundation. Detailed Implementation

[0016] The preferred embodiments of this utility model are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of this utility model and are not intended to limit the scope of protection of this utility model. It should be noted that in the description of this utility model, terms such as "front," "rear," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. This is merely for ease of description and does not indicate or imply that the device or element must have a specific orientation and positional relationship, and therefore should not be construed as a limitation of this utility model. It should also be noted that in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0017] Example 1: Refer to Appendix Figure 1 A unit-type roof composite ventilation device mainly consists of a swirl ventilator 1 and a fan 2. The swirl ventilator 1 is installed on the foundation 3 of the roof opening for natural ventilation. The swirl ventilator 1 includes turbine blades 1.1 and an air inlet throat 1.5. The fan 2 is installed inside the air inlet throat 1.5 for mechanical ventilation.

[0018] Specifically, the swirl ventilator 1 mainly consists of turbine blades 1.1, a rotating shaft 1.2, a support 1.3, a bearing housing 1.4, and an air inlet 1.5. The support 1.3 is fixed to the upper part of the air inlet 1.5 and is used to support the bearing housing 1.4. The rotating shaft 1.2 is fixed on the rotation axis 1.2 of the turbine blades 1.1 and is rotatably connected to the bearing housing 1.4. The turbine blades 1.1 have many crescent-shaped ventilation openings. When there is no wind, ventilation relies on the temperature difference between indoors and outdoors. When there is wind, the turbine blades 1.1 rotate, drawing indoor air to the outside through centrifugal force to achieve natural exhaust. However, natural exhaust is greatly affected by the weather, especially when there is no wind, it cannot meet the indoor ventilation needs.

[0019] The fan 2 mainly consists of a motor 2.2 and fan blades 2.1. The motor 2.2 is fixed inside the air inlet 1.5 by a mounting bracket 2.3. When natural exhaust ventilation cannot meet the indoor ventilation needs, turning on the fan 2 for mechanical exhaust ventilation can satisfy the indoor ventilation requirements.

[0020] For factory ventilation, multiple composite exhaust systems need to be installed on the roof. Each system has an inlet diameter of 400-1200mm, and fan 2 has a maximum airflow of 45,000 m³ / h with a single unit power of approximately 1.1kW. Under natural exhaust conditions, the air velocity at the inlet 1.5 is approximately 1 m / s. Turning on fan 2 increases the air velocity at the inlet 1.5 from 1 m / s to approximately 4 m / s, thus increasing the airflow by about three times.

[0021] Natural ventilation is prioritized in the control system, with fan 2 in the off state. The combined exhaust system relies solely on indoor and outdoor thermal pressure and outdoor wind pressure for natural ventilation. When it is necessary to increase the exhaust volume, fan 2 can be turned on manually or automatically for mechanical exhaust.

[0022] Example 2: Refer to Appendix Figure 2 In this embodiment, a connecting shaft 1.6 is provided between the fan blade 2.1 and the rotating shaft 1.2, and the fan blade 2.1 is coaxially connected to the vortex ventilator 1 through the connecting shaft 1.6 and the rotating shaft 1.2.

[0023] The turbine blades 1.1 on the swirl ventilator 1 are unidirectional; regardless of the wind direction, turbine blades 1.1 can only rotate in one direction. When the swirl ventilator 1 rotates under the influence of natural wind, the fan blades 2.1 rotate coaxially and expel air upwards. In this way, utilizing natural wind power allows the fan blades 2.1 and turbine blades 1.1 to rotate synchronously, effectively increasing the number of blades and thus improving the exhaust efficiency. When there is no wind, turning on the motor 2.2 will also drive the fan blades 2.1 and turbine blades 1.1 to rotate synchronously, meeting the ventilation requirements.

[0024] Example 3: In Example 2, the fan blades 2.1 and turbine blades 1.1 rotate synchronously regardless of whether there is natural or mechanical exhaust. However, it is more reasonable that the speed is not high during natural exhaust, so it is desirable for the fan blades 2.1 and turbine blades 1.1 to rotate synchronously; while the speed is high during mechanical exhaust, it is desirable for the motor 2.2 to drive only the fan blades 2.1 to rotate, so as to avoid problems with the turbine blades 1.1 due to high-speed rotation.

[0025] See attached document Figure 3 The difference between this embodiment and embodiment 2 is that a clockwise overrunning clutch 2.4 is provided between the motor 2.2 and the fan blade 2.1, and a counterclockwise overrunning clutch 2.5 is provided between the connecting shaft 1.6 and the fan blade 2.1.

[0026] An overrunning clutch is existing technology, a device that uses speed changes or rotation direction changes of the driving and driven parts to achieve unidirectional rotation and engagement / disengagement. A clockwise overrunning clutch 2.4 is provided between the motor 2.2 and the fan blade 2.1. When the fan blade 2.1 rotates clockwise, the motor 2.2 will not rotate, but when the motor 2.2 rotates clockwise, it will drive the fan blade 2.1 to rotate. A counterclockwise overrunning clutch 2.5 is provided between the connecting shaft 1.6 and the fan blade 2.1. When the turbine blade 1.1 rotates clockwise, it will drive the fan blade 2.1 to rotate, but when the fan blade 2.1 rotates clockwise, it will not drive the turbine blade 1.1 to rotate. Thus, during natural exhaust, the fan blade 2.1 and the turbine blade 1.1 can rotate synchronously; during mechanical exhaust, the motor 2.2 can only drive the fan blade 2.1 to rotate.

[0027] It is worth noting that the content not described in detail in the above embodiments is prior art. It is also worth noting that any additions, subtractions, substitutions, and improvements made by those skilled in the art based on the structure and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A unit-type rooftop composite ventilation device, characterized in that: It mainly consists of a swirl ventilator and a fan. The swirl ventilator is installed on the foundation of the roof opening for natural ventilation. The swirl ventilator includes turbine blades and an air inlet throat, and the fan is installed inside the air inlet throat for mechanical ventilation.

2. The unitized rooftop composite ventilation device as described in claim 1, characterized in that: The swirl ventilator also includes a bracket, a bearing housing, and a rotating shaft; the bracket is fixed to the upper part of the air inlet and is used to support the bearing housing; the rotating shaft is fixed on the axis of the turbine blades and is rotatably connected to the bearing housing.

3. The unitized rooftop composite ventilation device as described in claim 2, characterized in that: The fan mainly consists of a motor and fan blades. A connecting shaft is set between the fan blades and the rotating shaft. The fan blades are coaxially connected to the vortex ventilator through the connecting shaft and the rotating shaft. When the vortex ventilator rotates under the action of natural wind, the fan blades blow air upward.

4. A unitized rooftop composite ventilation device as described in claim 3, characterized in that: A clockwise overrunning clutch is provided between the motor and the fan blades.

5. A unitized rooftop composite ventilation device as described in claim 3 or 4, characterized in that: A counterclockwise overrunning clutch is provided between the connecting shaft and the fan blades.

6. A unitized rooftop composite ventilation device as described in claim 3, characterized in that: A mounting bracket is installed between the motor and the air inlet.

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