CN102679467B - Air-conditioner ventilating system for pretreatment workshop for dairy product production - Google Patents
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Abstract
本发明提供一种产热量较大的乳品预处理车间的空调送风系统，包括空调系统的送排风形式，空调末端送风口及排风口的布置方式以及车间温控系统，其特征在于：空调系统采用全新风运行，排风机组独立进行设置，所述的空调系统根据室内温度变化进行送，排风调节。本发明乳品生产预处理车间的空调通风系统和现有技术相比，具有运行节能，初期投资低，运行维护方便的特点，因此，具有良好的推广使用价值。
The invention provides an air-conditioning air supply system for a dairy pretreatment workshop with relatively large heat production, including the air supply and exhaust form of the air-conditioning system, the arrangement of air supply outlets and exhaust outlets at the end of the air conditioner, and a workshop temperature control system, characterized in that: The air-conditioning system uses fresh air to operate, and the exhaust fan unit is set independently, and the air-conditioning system is adjusted according to the indoor temperature change. Compared with the prior art, the air-conditioning ventilation system of the dairy production pretreatment workshop of the present invention has the characteristics of energy saving in operation, low initial investment, and convenient operation and maintenance, so it has good popularization and use value.
Description
1、技术领域1. Technical field
本发明涉及一种空调通风系统，尤其涉及产热量较大车间的全新风空调系统，该发明特别适应于对空气洁净度有一定要求的产热量大的车间。The invention relates to an air-conditioning and ventilation system, in particular to a fresh-air air-conditioning system for workshops with large heat production.
2、技术背景2. Technical background
产热量大的车间，采用传统的舒适性空调对其进行降温即使用空调的制冷量抵消车间产热量的设计方案是不合理的。特别是车间产热量大于800w/m2以上时利用空调制冷量抵消热量就显得更不合理。It is unreasonable to use the traditional comfort air conditioner to cool down the workshop with large heat production, that is, to use the cooling capacity of the air conditioner to offset the heat production of the workshop. Especially when the heat output of the workshop is greater than 800w/ m2 , it is even more unreasonable to use the cooling capacity of the air conditioner to offset the heat.
本发明是在对产热量较大的乳品预处理车间为模型进行深入研究后经实际验证后提出的一种适合于该类车间特点的空调送、排风系统：即空调送风系统采用全新风运行机组----空调机组向车间输送新风，车间被加温的高温空气从车间顶棚就近直接排出室外。The present invention proposes an air-conditioning air supply and exhaust system suitable for the characteristics of this type of workshop after in-depth research on the dairy pretreatment workshop with large heat production as a model: that is, the air-conditioning air supply system adopts fresh air. Running unit - the air conditioner unit sends fresh air to the workshop, and the heated high-temperature air in the workshop is directly discharged from the ceiling of the workshop to the outside.
为使车间建立合理的气流组织，对车间内的送风口和排风口的数量和位置进行了合理的设计送风口的数量应根据产热设备的产热量的大小进行确定，送风口位置有利于污浊热空气的排出.即热空气上升的方向应为空气的流线方向，排风口的位置尽量选择在距产热设备最近位置的上方，即布置在沿热空气流线最近的位置上。实践证明此方案具有显著的节能效应，实施例证实节能效果可达35％以上。In order to establish a reasonable air flow organization in the workshop, the number and position of the air supply outlets and exhaust outlets in the workshop are reasonably designed. The number of air supply outlets should be determined according to the heat output of the heat generating equipment. The discharge of dirty hot air. That is, the rising direction of the hot air should be the direction of the air streamline, and the position of the exhaust outlet should be selected as far as possible above the nearest position from the heat generating equipment, that is, arranged at the nearest position along the hot air streamline. Practice has proved that this solution has a significant energy-saving effect, and the embodiment proves that the energy-saving effect can reach more than 35%.
本发明的目的是提供一种设计合理，运行节能，车间人员工作区空气品质较好的全新风空调系统。The purpose of the present invention is to provide a fresh air air conditioning system with reasonable design, energy-saving operation, and better air quality in the working area of workshop personnel.
3、发明内容：3. Contents of the invention:
乳品生产预处理车间的空调通风系统，包括空调系统的送风和排风，其特征在于：空调送风系统采用全新风运行，设置有温度传感器和压差传感器，空调排风系统设置独立的排风机组；空调末端送风口装置及排风口装置的布置方式为：送风管道在车间内使用送风夹层墙作为送风风道并沿车间四周布置，车间中部设置圆形送风柱，排风口设置在产热设备的上方，利用空气的“热轻冷重”，产生自然的升力顺利排出；使用设置在车间的温度传感器通过感测车间温度并与设定车间温度相比较，当车间温度低于车间设定温度时发出指令信号，使送风空调机组降低转速，从而减少风量，反之增加风量，从而实现车间温度恒定控制；使用压差传感器感测车间与外界的压力差，当车间压力高于设定值时，开启排风机组，当车间压差小于设定压力差时关闭排风风机，始终保持车间相对于室外大于5pa的压力数值，车间的排风量始终小于送风量。The air-conditioning and ventilation system of the dairy production pretreatment workshop includes the air supply and exhaust of the air-conditioning system. Fan unit; the arrangement of the air supply outlet device and the air exhaust outlet device at the end of the air conditioner is as follows: the air supply duct uses the air supply interlayer wall as the air supply duct in the workshop and is arranged along the periphery of the workshop. The tuyere is set above the heat-generating equipment, using the "heat, light, cold, and heavy" of the air to generate natural lift and discharge smoothly; use the temperature sensor installed in the workshop to sense the workshop temperature and compare it with the set workshop temperature, when the workshop When the temperature is lower than the set temperature of the workshop, a command signal is sent to reduce the speed of the air supply air conditioning unit, thereby reducing the air volume; otherwise, the air volume is increased to achieve constant temperature control of the workshop; the differential pressure sensor is used to sense the pressure difference between the workshop and the outside world, and when the workshop When the pressure is higher than the set value, the exhaust fan unit is turned on, and when the pressure difference of the workshop is lower than the set pressure difference, the exhaust fan is turned off, and the pressure value of the workshop relative to the outdoor is always greater than 5pa, and the exhaust air volume of the workshop is always smaller than the air supply volume .
(1)、根据产热设备的位置和产热量的大小，计算出所需排风量，然后根据车间的工艺及产热设备设置排风口，排风口优先设置在产热设备的上方。排风口的排出的空气可以直接通向技术夹层，也可以设置排风机通过管道排向室外，对于含有酸碱性的腐蚀性有毒有害气体使用排风管道进行汇集处理然后使用排风机排出室外，对于没有腐蚀性的气体可以直接依靠车间的正压排向夹层。(1) Calculate the required exhaust air volume according to the location of the heat-generating equipment and the amount of heat generated, and then set the exhaust outlet according to the workshop process and heat-generating equipment. The exhaust outlet is preferentially set above the heat-generating equipment. The air discharged from the air outlet can be directly led to the technical mezzanine, or an exhaust fan can be installed to discharge to the outside through the pipe. For the corrosive, toxic and harmful gases containing acid and alkali, the exhaust pipe is used for collection and treatment, and then the exhaust fan is used to discharge the air outside. For non-corrosive gas, it can be directly exhausted to the interlayer by relying on the positive pressure of the workshop.
(2)、按照比所需排风大30％左右的比例确定送风量，送风口的位置尽量沿车间四周进行布置，尽量接近车间底部，以便使车间底部形成”冷池”效应，送风口尽量贴附地面以利于流体的贴附效应实现较远的射程。为使送风口送出的风量均匀一致使用流体力学的静动压转换原理设置了带有静压箱和均流板的条形缝隙射流风口。(2) Determine the air supply volume according to the ratio of about 30% larger than the required exhaust air. The position of the air supply outlet should be arranged along the periphery of the workshop as much as possible, as close as possible to the bottom of the workshop, so as to form a "cold pool" effect at the bottom of the workshop. The air supply outlet Try to stick to the ground to facilitate the sticking effect of the fluid to achieve a longer range. In order to make the air volume sent out by the air outlet uniform, the static and dynamic pressure conversion principle of fluid mechanics is used to set up a strip-shaped slot jet air outlet with a static pressure box and a flow equalizer.
(3)、为提高车间空气的质量同时减少维护工作量，空调新风入口设置新风沉降室，由于该空调采用全新风运行的方式其送风量较大，特别是夏季，为滤除空气中的尘埃使用袋式过滤器，困袋式空气过滤器具容尘量大和风阻小的特点。由于车间对于室外建立了大于10pa的压差值，即车间形成了正压效应，此正压不但有利于室内热空气的排出同对也有利于防止地面的尘埃车间与外界的缝隙部位如门等进入车间，此措施使车间空气洁净度得到有提高。(3) In order to improve the air quality in the workshop and reduce the maintenance workload, a fresh air settling chamber is set at the fresh air inlet of the air conditioner. Since the air conditioner adopts fresh air operation, the air supply volume is relatively large, especially in summer, in order to filter out the air Dust uses a bag filter, and the trapped bag air filter has the characteristics of large dust holding capacity and small wind resistance. Since the workshop has established a pressure difference greater than 10pa to the outside, that is, the workshop has formed a positive pressure effect. This positive pressure is not only conducive to the discharge of indoor hot air, but also helps to prevent dust on the ground. The gap between the workshop and the outside world, such as doors, etc. Entering the workshop, this measure has improved the air cleanliness of the workshop.
(4)、车间温度控制的实施是通过控制车间送风机的风量大小控制车间的温度，当车间温度传感器感测车间温度低于设定值时增大风量，反之减少风量。(4) The implementation of workshop temperature control is to control the temperature of the workshop by controlling the air volume of the workshop blower. When the workshop temperature sensor senses that the workshop temperature is lower than the set value, the air volume is increased, and vice versa.
(5)、车间恒定正压的控制实施是通过设置在车间的压差传感器控制排风机的排风量大小来实现，当车间压力高于设定值时，增大排风机的排风量，反正减少排风量。(5) The implementation of constant positive pressure control in the workshop is realized by controlling the exhaust air volume of the exhaust fan through the differential pressure sensor installed in the workshop. When the workshop pressure is higher than the set value, the exhaust air volume of the exhaust fan is increased. Anyway, reduce the exhaust air volume.
4、附图说明4. Description of drawings
附图1车间送风及排风系统立体示意图Attached Figure 1 Stereoscopic schematic diagram of the air supply and exhaust system in the workshop
附图2车间温度控制原理图Attachment 2 Schematic Diagram of Workshop Temperature Control
附图3新风沉降室示意图Attached Figure 3 Schematic diagram of fresh air settling chamber
5、具体实施方式5. Specific implementation
本发明实施例经乳品预处理车间实践证实，节能效果达35％以上，车间控温稳定，压差控制准确，空气品质较好。The embodiment of the present invention has been proved by the practice of the dairy pretreatment workshop, the energy saving effect reaches more than 35%, the temperature control of the workshop is stable, the pressure difference control is accurate, and the air quality is better.
下面结合附图1-3对本实施例做进一步说明：Below in conjunction with accompanying drawing 1-3 present embodiment is described further:
传统的空调系统设计采用”顶送顶回”(在车间顶部均布排风口，并在车间顶部均布送风口的做法，导致产热设备产生的热量在车间扩散，导致热量不能顺利排出。见下图The traditional air-conditioning system design adopts "top delivery and top return" (the practice of evenly distributing the exhaust outlets on the top of the workshop and evenly distributing the air supply outlets on the top of the workshop, which causes the heat generated by the heat-generating equipment to spread in the workshop, resulting in the heat not being discharged smoothly. See below
因为空气随温度的升高，密度变小，有向上自然运动的特性，当上升的热空气遇到送风口送出的下降的冷空气后，热空气又会被带动向下运动，以至于上升的热空气跟下降的冷空气运动方向相反，导致空调空调能耗大，效果差。Because the density of air decreases with the increase of temperature, it has the characteristics of natural upward movement. When the rising hot air encounters the falling cold air sent by the air supply port, the hot air will be driven to move downward again, so that the rising The hot air moves in the opposite direction to the descending cold air, which leads to high energy consumption and poor effect of air conditioning.
(1)、根据产热设备的位置和产热量的大小，计算出所需排风量，然后根据车间的工艺及产热设备设置排风口(3)，排风口(3)优先设置在产热设备的上方.排风口(3)的排出的空气可以直接通向技术夹层(1)，也可以设置排风机(7)通过管道排向室外，对于含有酸碱性的腐蚀性有毒有害气体使用排风管道进行汇集处理然后使用排风机(7)排出室外，对于没有腐蚀性的气体可以直接依靠车间的正压排向夹层(1)。(1) According to the position of the heat-producing equipment and the amount of heat produced, calculate the required exhaust air volume, and then set the air outlet (3) according to the workshop process and heat-producing equipment, and the air outlet (3) is set at priority Above the heat-generating equipment. The air discharged from the air outlet (3) can directly lead to the technical interlayer (1), or an exhaust fan (7) can be installed to discharge to the outside through the pipe, which is poisonous and harmful to the corrosive substances containing acid and alkali. The gas is collected and processed through the exhaust duct and then exhausted outside the room using the exhaust fan (7). Non-corrosive gases can be directly exhausted to the interlayer (1) by relying on the positive pressure of the workshop.
(2)、按照比所需排风大30％左右的比例确定送风量，送风口的位置尽量沿车间四周进行布置，尽量接近车间底部，以便使车间底部形成”冷池”效应，送风口尽量贴附地面以利于流体的贴附效应实现较远的射程。为使送风口送出的风量均匀一致使用流体力学的静动压转换原理设置了带有静压箱和均流板的条形缝隙射流风口(4)。(2) Determine the air supply volume according to the ratio of about 30% larger than the required exhaust air. The position of the air supply outlet should be arranged along the periphery of the workshop as much as possible, as close as possible to the bottom of the workshop, so as to form a "cold pool" effect at the bottom of the workshop. The air supply outlet Try to stick to the ground to facilitate the sticking effect of the fluid to achieve a longer range. In order to make the air volume sent out by the air supply port uniform, a strip-shaped slit jet air port (4) with a static pressure box and an equalizer plate is provided by using the static-dynamic pressure conversion principle of fluid mechanics.
(3)、为提高车间空气的质量同时减少维护工作量，空调新风入口设置新风沉降室(11)，由于该空调采用全新风运行的方式其送风量较大，特别是夏季，为滤除空气中的尘埃使用袋式过滤器(9)(10)，因袋式空气过滤器(9)(10)具容尘量大和风阻小的特点。由于车间对于室外建立了大于10pa的压差值，即车间形成了正压效应，此正压不但有利于室内热空气的排出同时也有利于防止地面的尘埃车间与外界的缝隙部位如门等进入车间，此措施使车间空气洁净度得到有提高。(3) In order to improve the quality of the air in the workshop and reduce the maintenance workload, a fresh air settling chamber (11) is installed at the fresh air inlet of the air conditioner. Since the air conditioner adopts the fresh air operation mode, the air supply volume is relatively large, especially in summer. Dust in the air uses bag type filter (9) (10), because of the characteristics that bag type air filter (9) (10) tool dust holding capacity is big and wind resistance is little. Since the workshop has established a pressure difference greater than 10pa to the outside, that is, the workshop has formed a positive pressure effect. This positive pressure is not only conducive to the discharge of indoor hot air, but also helps to prevent the dust on the ground from entering the gap between the workshop and the outside world, such as doors. Workshop, this measure has improved the air cleanliness of the workshop.
(4)、车间温度控制的实施是通过控制车间送风机的风量大小控制车间的温度，当车间温度传感器(5)感测车间温度低于设定值时增大风量，反之减少风量。(4) The implementation of workshop temperature control is to control the temperature of the workshop by controlling the air volume of the workshop blower. When the workshop temperature sensor (5) senses that the workshop temperature is lower than the set value, the air volume is increased, and vice versa.
(5)、车间恒定正压的控制实施是通过设置在车间的压差传感器(6)控制排风机的排风量大小来实现，当车间压力高于设定值时，增大排风机的排风量，反正减少排风量。(5) The implementation of constant positive pressure control in the workshop is realized by controlling the exhaust air volume of the exhaust fan through the differential pressure sensor (6) installed in the workshop. When the workshop pressure is higher than the set value, the exhaust fan's exhaust Air volume, anyway, reduce the exhaust air volume.
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| CN103925686A (en) * | 2014-04-30 | 2014-07-16 | 铁道第三勘察设计院集团有限公司 | Personalized air conditioner air supply device in high and large space |
| CN105066396B (en) * | 2015-05-20 | 2017-09-01 | 西安建筑科技大学 | A square column wall-attached air supply with a circular equal-section flow equalization device |
| CN105460034B (en) * | 2015-11-18 | 2018-01-12 | 西安建筑科技大学 | A kind of attached combined type air supply method of double applying and device suitable for train soft sleeper box |
| CN106034858A (en) * | 2016-07-18 | 2016-10-26 | 马云飞 | New greenhouse cooling device and application method thereof |
| CN106020302A (en) * | 2016-07-27 | 2016-10-12 | 南京诺丹工程技术有限公司 | Lab environment monitoring device |
| CN106839243A (en) * | 2017-03-22 | 2017-06-13 | 东旭科技集团有限公司 | Glass furnace ventilation workshop and ventilated control system |
| CN108628370A (en) * | 2018-06-08 | 2018-10-09 | 青岛特利信工业科技有限公司 | Environment control method and system in the case detected in conjunction with micro-positive pressure and SF6 |
| CN109579241A (en) * | 2018-12-14 | 2019-04-05 | 汕头市东方科技有限公司 | A kind of workshop distribution ventilation automatic control system and its control method |
| CN110220262A (en) * | 2019-06-04 | 2019-09-10 | 南京师范大学镇江创新发展研究院 | A kind of fresh air processing method in non-sleeve configuration paper mill workshop |
| CN111023492B (en) * | 2019-11-28 | 2021-04-27 | 合肥通用制冷设备有限公司 | Fresh air temperature and humidity control method |
| CN111594948B (en) * | 2020-05-30 | 2021-09-17 | 石家庄奥祥医药工程有限公司 | Steady-state current-changing medical examination cabin |
| CN112344512A (en) * | 2020-10-27 | 2021-02-09 | 海信（山东）空调有限公司 | Fresh air control method of air conditioner |
| CN117006569A (en) * | 2023-08-03 | 2023-11-07 | 中钢集团马鞍山矿山研究总院股份有限公司 | An indoor composite ventilation and cooling system for tall, high-temperature workshops |
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