Air Ventilation System OEM&ODM Service

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Guangzhou JOIN Electronic & Technology Co., Ltd is a famous high-tech enterprise which is engaged in fresh air, heat pump and special refrigeration equipment manufacturing and sales, with more than 30 people who are the backbone specializing in professional technology research and development. Our company has a complete set of production line, advanced large, medium and small production equipment, professional laboratory, quality inspection room and perfect quality management system. We have high-quality management personnel, technical personnel and skilled production staff, can provide customers with full range of products and production services, have a strong production research and development ability. 

Product OEM solution is a necessary way under the trend of large-scale socialized production and collaboration, it is also one of the effective ways to rationalize resources. Save the cost of the product research and development process in the plant location, technology research and development investment, equipment procurement, human resources. You just need to put forward your product demand. JOIN Technology relying on our own strong product production and R&D strength. We can provide quality products in line with international standard to you. 

Excellent price, rapid response, effective communication all show our service is professional, for the majority of customers to provide quality products and services, establish a leading competitive advantage.

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Applicable object

  • Companies with product intentions and brands, but no products of their own;

  • Companies with product intentions and brands but lack the corresponding R&D capabilities;

  • Companies with brands and samples but insufficient capacity need large-scale production;

  • Fresh air series, air source heat pump series, industrial water chiller series, special refrigeration equipment and other products, not involved in the product can also be customized technology research and development, welcome to inquire.

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applicable object

A company that has product intent and brand but does not have its own product;

A company that has product intentions and brands but lacks corresponding research and development capabilities;

Companies that have brands and samples but have insufficient capacity and need large-scale production;

Applicable product range

Fresh Air Series,  Air Source Heat Pump Series,

Industrial Water Chiller Series,

Special refrigeration equipment and other products.

 

The development of air ventilation
The development of air ventilation has gradually prospered with the development of modern industries, which has led to the rise of various manufacturers, such as heat pump manufacture and air ventilator machine supplier. The demand for air ventilation dehumidifier and heat exchanger is growing.
An air source heat pump is an energy-saving device that uses high-level energy to make heat flow from a low-level heat source to a high-level heat source. Air, as the low-level heat source of the heat pump, is inexhaustible and inexhaustible. It is available everywhere and can be obtained free of charge. Moreover, the installation and use of air-source heat pumps are relatively convenient. The research, production, and application of air-source heat pumps (also known as air-cooled heat pumps) in China only developed rapidly in the late 1980s. The current products include domestic heat pump air conditioners, commercial unit heat pump air conditioners and heat pump cold and hot water units.
Air source heat pump is divided according to the capacity of the unit: small unit, medium unit, large unit and so on. According to the combination of unit types, it is divided into integrated units (units with one or several compressors sharing a water-side heat exchanger) and modular units (units consisting of several independent modules).
China has a vast territory, and its climate covers cold, warm, and tropical regions. According to China's "Standard for Architectural Climate Zoning" (GB 50178-93), the country is divided into 7 first-level districts and 20 second-level districts. Correspondingly, the design and application methods of air source heat pump should be different in different regions.
For hot summers and cold winters: the climatic characteristics of hot summers and cold winters are as their names. The average regional temperature in July is 25-30°C, and the number of days with an average daily temperature greater than 25°C is 40-100 days. The temperature is 0-10℃, and the number of days with an annual average temperature of less than 5℃ is 0-90 days. The daily temperature difference is small, the annual rainfall is large, and the sunshine is less. The climate characteristics of these areas are very suitable for the application of air source heat pumps. For most of Yunnan, Guizhou, southwest Sichuan, and a small part of southern Tibet: these areas have an average temperature of 1-13°C in January, and the number of days with an average daily temperature less than 5°C is 0-90 days. Under such climatic conditions, in the past, buildings were not provided with heating equipment. However, in recent years, with the development of modern buildings and a better living standard, people have higher and higher requirements for the living and working environment. Therefore, modern buildings and high-rise apartments in these areas have begun to install heating systems. Therefore, in such climatic conditions, the selection of air source heat pump system is very suitable.
The traditional air source heat pump unit can operate safely and reliably when the outdoor air temperature is higher than -3°C. Therefore, the application range of air source heat pump units has long been extended from the Yangtze River Basin to the Yellow River Basin, that is, it has entered part of the region II of the climatic zoning standard. The climate in these areas is characterized by low winter temperatures. The average temperature in January is -10°C. However, during the heating period, it is higher than -3°C during a large proportion of the hours, which occurs mostly at night. Therefore, air source heat pump that are used in buildings in these areas that operate mainly during the day (such as office buildings, shopping malls, banks, etc.), has a feasible and reliable operation. Also, the weather in these areas is dry in winter, and the outdoor relative humidity in the coldest month is about 45% -65%. Therefore, the frost phenomenon of air source heat pump is not serious.
Winter temperatures in China's cold regions are low and the climate is dry. The calculated outdoor temperature for heating is -5 to -15°C, and the average outdoor relative humidity in the coldest month is basically between 45% and 65%. The use of air-source heat pumps in these areas has less severe frost formation. Therefore, the frost problem is not the biggest obstacle to the use of air source heat pumps in these areas in winter. However, there are some problems that restrict the application of air source heat pump in cold regions. When the amount of heat required is relatively large, the heat pump does not produce enough heat. Moreover, the reliability of the air source heat pump is poor in cold areas. Secondly, the energy efficiency ratio (EER) of air source heat pump will drop rapidly in low-temperature environments.
How does air ventilation work?
Air ventilation system is a new type of indoor ventilation and exhaust equipment, which can be organized to enter the air, exhaust air and let the air flow unobstructed. Taking air ventilation system for home for example, through air ventilation, it can exhaust indoor harmful chemical odors, pollutants, moisture, odour, virus, bacteria and so on completely and thoroughly. It can keep indoor fresh air at any time though its air ventilation circulation system and let people breathe fresh, clean and high quality air in the room. So, do you know how air ventilation work?
First of all, let's get to know the principle of the air ventilation system. From the prospective of a experienced air ventilation supplier, we would like to tell you in a way which is easy to understand. There are two common principles of purification, one is the HEPA principle, the other is the electrostatic principle. When the motor is driven, the dirty air is inhaled, and the particles in the air are adsorbed on the filter screen through the HEPA filter to spit out clean air. This is the HEPA principle. The electrostatic principle is to ionize the particles in the air to be charged and then adsorbed on a high-voltage electrostatic collector plate inside the fresh air system. The electrostatic principle is very suitable for use on the fresh air system. Because the fresh air continues to enter, there is no need to worry about ozone exceeding the standard. As for the HEAP and electrostatic combination of air ventilation system, purification filtration function is relatively better. Fresh air equipment with filtration function, the outdoor air, after filtering through HEPA and electrostatic principle, is sent indoors. The biggest benefit is that the air is usually abundant, and there is no need to worry about carbon dioxide or ozone.
After getting to know the principle, we know that the air ventilation system is an open circulation system consisting of a fan, an inlet, an outlet and various pipes and joints. The fan is connected with a series of air outlets through the pipe. When starting the fan, the indoor negative pressure is formed, the indoor contaminated air is discharged through the outlet and the fan to the outdoor, and the outdoor fresh air enters the room through the inlet. When the outdoor fresh air and the indoor dirty air pass through the high performance air quality exchanger, part of the energy of the dirty air is transferred to the incoming fresh air, and the fresh air is sent into the room after preheating, pre-cooling, humidity exchange. In this process, the heat recovery of air ventilation system plays a very important role, because the fresh air preheated by displacement purification conveys air through an air ventilation system placed in a ceiling. Air ventilation system will make indoor and outdoor fresh air into each bedroom and living room. Dirty air enters the exhaust system through each bedroom and living room. Dirty air is discharged from the corridor and bathroom through the vent. Finally, after high-performance air quality exchanger (heat recovery) replacement purification of pre-cooled fresh air into the room.
What are the types of ventilation?
With the development of heat exchange ventilation system industry, the classification of heat air ventilation and cooling is more and more. Each air ventilation recuperator supplier propagandizes the function and the benefit of the heat exchange system, which has formed the very perfect image in the common people's imagination. A good heat exchange ventilation system can indeed create a healthy and comfortable environment in the room, expel harmful gases, carbon dioxide and formaldehyde, eliminate outdoor haze, insulate outdoor noise and cold air, and be able to optimize indoor temperature and humidity. But the function, effect, value and technical content of ventilator machine types are different. In order to let the consumer know more about the heat exchanger and make smarter choices, we have made a comprehensive analysis of the classification of the air ventilation heat exchanger.
According to the installation mode, the air ventilation heat exchanger can be divided into pipeline type air heat exchange ventilation system (central fresh air) and no pipeline air heat exchange ventilation system. No pipe air heat exchange ventilation system includes cabinet heat exchanger and wall mounted heat exchanger. In addition, according to the principle of different ventilation, the air heat exchange ventilation system can be divided into two categories: one-way flow and two-way flow, and each category also contains different product categories. At the same time, different types of grades are different, there are low-end and high-end. To make it easier for you to understand the various types, we sorted out the air heat exchange ventilation system type table. In the pipe type air heat exchange ventilation system, the negative pressure type air ventilation heat exchanger belongs to the low-end, the structure is very simple, the technical content is very low. It only has housing and fan. The positive pressure air heat exchange ventilation system priced the purification function, some styles even increased the electric auxiliary function of air ventilation heat recovery, its grade is higher. The most high-end pipe-type air heat exchange ventilation system is a full heat exchange two-way flow fan. Among the non-ducted air heat exchange ventilation system, the one-way flow air ventilation heat exchanger with no heating device has the lowest grade, while the fresh air machine with intelligent heating function such as air ventilation heat recovery and heat exchange core is of high-end type.
For every air ventilation recuperator supplier, the central fresh air system is a key sale point, which is also called the pipe type fresh air system, which is divided into two categories: one-way flow and two-way flow. Central fresh air contains mainframe, pipe and controller. The biggest advantage of this kind of equipment is that the fresh air volume is large, and a device can send fresh air into every room, but the installation is also very cumbersome. Its mainframe and all the pipes should be hidden, but if the residential space allows, the final effect will be very good. Large-family homes that haven't been renovated are best suited to install a central two-way stream air heat exchange ventilation system. The central fresh air system can meet the fresh air demand of the whole house. Because a mainframe covers the area of the whole house, it is called a central fresh air system.
Air ventilation industry in China
What are the development prospects of the ventilation system industry in 2019 and in the future?
At present, China is still facing a serious threat to indoor air quality-outdoor air pollution, indoor decoration pollution, and excessive carbon dioxide concentrations caused by densely populated people, which affect people's lives and health in buildings, and also affect the air heat ventilation system and therefore the demand for air processing equipment such as air dehumidifier ventilation machine has further affected manufacturers such as air dehumidifier ventilation manufacturer, heat recovery manufacturer, recuperator supplier. Based on China's huge building holdings and the long process required for environmental governance, it has been determined that China's air heat ventilation system will have a broad market for a long time to come.
According to the report by the Ministry of Ecology and Environment of China, in February 2019, the proportion of average days of good air in 337 cities at and above the national level was 75.8%, a year-on-year decrease of 2.3 percentage points; the PM2.5 concentration was 55 micrograms per cubic meter, a year-on-year increase 1.9%. Among them, the "2 + 26" cities in Beijing, Tianjin, Hebei and surrounding areas averaged 36.4% of the average good days in February, a year-on-year decrease of 21.8 percentage points; the PM2.5 concentration was 108 micrograms per cubic meter, a year-on-year increase of 35.0%. This means that China's air pollution control situation is not stable. Even if it is May, it is no longer the heating season. Moderate air pollution in cities such as Beijing still happens occasionally. In the first quarter of 2019, the retail sales of air ventilation home recuperator supplier increased by 47% year-on-year, far exceeding the growth rate of other home appliances. It may be hard to believe that even in Beijing, which has the highest concern for air quality, the proportion of households with an air heat ventilation system is only about 40%, not to mention other northern and northwestern cities with worse air quality.
In fact, the most important issue is "public education" and "consumer education". The public must be fully aware of air pollution, including the dangers of indoor air pollution and the protective measures that can be taken. In this respect, the government's responsibilities and the media's responsibilities are indispensable. We cannot ignore this because of the effectiveness of air management in the past few years.
Even in the weather with severe air pollution, even if there is protective equipment, I don't wear a mask when going out, and I don't have a dehumidifier ventilation machine at home. I have also encountered practitioners in Xi'an complaining that the media will pay attention and report only when Beijing encounters more severe air pollution, saying that the local smog will become more serious and the drive on the ventilation system sales will be useless. Both air dehumidifier manufacturer and air ventilation heat recovery manufacturer know the prospects are good, but it is not easy to stick to it.
The author believes that, on the one hand, the public's awareness needs to be further improved. Affected by the outdoor air problems in China in recent years, Chinese people are used to equating 'air quality' and 'PM2.5 index'. But measuring indoor air quality the index is far more than PM2.5, according to the "Code for the Control of Indoor Environmental Pollution of Civil Construction Engineering”, including carbon dioxide, nitrogen dioxide, formaldehyde, benzene, tritium, ammonia, TVOC, etc. PM2.5 or solid particulate matter in indoor pollution only accounts for a small percentage, and the ability of the ventilation system to improve indoor air quality is far more than removing haze and reducing solid particulate matter. The improvement of public awareness is inseparable from the guidance of the media and popular science and education. On the other hand, the industry and national standards need to be further improved. However, on May 1, 2019, the Ministry of Housing and Urban-Rural Development's “Residential Air System Technical Standards“officially came into effect. It can be expected that the implementation of this standard will greatly help the rapid and healthy development of the ventilation system industry.
Why is air ventilation needed?
Living in a city filled with the smell of reinforced concrete, occasionally you will be suffering from haze weather intrusion. In addition to the occasional journey to nature, what other ways can we help protect ourselves from air pollution? In fact, people spend 80% of their time indoors, and the best way to breathe as much as possible is to create a good indoor air environment for themselves. So, the air exchange ventilation system is your essential healthy companion, which includes an air ventilation system for a smoking room, kitchen and bathrooms and so forth.
To put it bluntly, an air exchange ventilation system is a machine that allows ventilation and indoor air purification without opening windows. Furthermore bluntly, when the outdoor fresh air is pumped to the indoors through the indoor dirty air circulation purification, it not only can achieve air exchange, but also ensure the clean indoor air. And the micro-positive pressure air supply makes the outdoor fresh air can only be organized into the indoor through the fresh air pipeline, and the fresh air is purified, which is completely avoiding the fresh air that may aggravate the indoor air pollution situation. So, our environmental conditions determine that choosing a micro-positive pressure air supply is the most appropriate.
As an air ventilation pump manufacturer, we can tell you that the air exchange ventilation system can provide fresh, clean air. For 365 days a year,24 hours a day, it can continuously provide fresh air for the room. For PM2.5 in the air, the fresh air purification system has a filtration rate of more than 90%. This allows you to enjoy the fresh air of nature without opening windows to meet the health needs of the human body. It can remove harmful gases and effectively remove all kinds of unhealthy or harmful gases such as fumes, CO2, cigarette smell, bacteria, viruses and so on. As for the air ventilation system for the smoking room, it avoids the dangers of secondhand smoke for children, loved ones and the elderly. As for the air ventilation for kitchen and bathrooms, it can expel indoor damp dirty air, eliminate odor, prevent moldy and breeding bacteria, and help prolong the service life of building and furniture. According to the air ventilation pump manufacturer, many people in the use of air purifiers only take into account its purification of haze, formaldehyde, but ignore the problem of carbon dioxide concentration in the confined space beyond the standard. Especially in winter, many people are prone to waking up the next day feeling dizzy, because the doors and windows are closed at night, coupled with the exhalation of carbon dioxide all night without fresh oxygen entering, causing the indoor carbon dioxide to seriously exceed the standard. As we all know, the harm of excess carbon dioxide to children and the elderly is particularly serious, how to effectively reduce indoor carbon dioxide has become an important issue to improve indoor air quality. In this regard, the air exchange ventilation system is a perfect tool for you.
How to maintain air ventilation machine?
With the general decline of air quality in some first- and second-tier cities, people have higher requirements for living standards given that the economic level is increasing. There are water purifiers on the waterside, air purifiers and ventilators on the airside, or a whole set of air house ventilation system, knowing more related content can make us use such machines more effectively and better improve the quality of life. Here we give a brief introduction to the air ventilation machine and how to better maintain the air ventilation machine and use air ventilation cleaning to prolong the service life of the machine. Ventilation uses mechanical or natural methods to send sufficient fresh air to the indoor space, and at the same time exhausts dirty air that does not meet the sanitary requirements in the room, so that the indoor air meets the sanitary requirements and production process needs. The various facilities that complete the ventilation work in the building are collectively referred to as ventilation equipment.
According to the power on which air flows, ventilation can be divided into natural ventilation and mechanical ventilation. On the one hand, the power of natural ventilation is the "hot pressure" produced by the temperature difference between indoor and outdoor air and the "wind pressure" produced by the effect of outdoor wind. These two factors sometimes exist alone or sometimes simultaneously. The size and direction of the wind are constantly changing, so the ventilation effect of natural ventilation is unstable. But natural ventilation does not consume energy and is an economical ventilation measure. On the other hand, power ventilation is a full-pressure or centrifugal fan using the principle of cross-flow, which forcibly exchanges indoor and outdoor air, and also performs noise reduction, air purification, and gas heat exchange. It is suitable for hotels, apartments, villas, and offices, commercial buildings, residences, hospitals, schools, etc.
The air ventilation solution can be divided into general ventilation and local ventilation. Full ventilation, also called dilution ventilation, is to ventilate the entire space. Local ventilation is to collect the polluted air directly at the place where the pollutants are generated and discharge it outdoors, or directly supply fresh air to the local space. Local ventilation has the advantages of good ventilation effect and saving air volume. There are many kinds of air ventilation machines produced by air ventilation system supplier, which can well meet different needs.
Air ventilation cleaning is very important for equipment maintenance. After the wet curtain fan has been used for one year, we would need to maintain the pump and water valve, and thoroughly clean the evaporation medium to ensure the wet curtain fan. The service life cannot be too high when cleaning the water pressure, so as not to damage the wet curtain. If there is compressed air, keep a certain distance to clean up to prevent damage to the system. If the wet curtain fan system trips, press the air or leakage switch after troubleshooting. The water in the water tower sucks air from the outside through a negative pressure fan and will suck dust from the air. The dust flows from the wet curtain back to the water tower through the water, so the water in the water tower must be replaced and cleaned frequently. No radioactive materials, corrosive materials, and odorous or odorous items should be placed around the wet curtain to ensure that the cold air sent are fresh and clean.
In addition, when installing an industrial exhaust fan, workers must seal it, especially there must be no gap around the fan. The best way to install an industrial exhaust fan is to close the nearby doors and windows on the wall of the fan and open the windows and doors on the wall opposite the fan to ensure that the airflow flows straight. It is not a small matter for the installation of the exhaust fan, and the installation effect may be related to future operations. You must pay attention to this throughout the installation process.
When installing the exhaust fan, we need to check whether the fan or louver is deformed and damaged during transportation, and then check whether the bolts of each part are loose. When installing and selecting the air outlet environment, pay attention to avoid big objects opposite the air outlet 2.5-3m. It also needs special attention when selecting the installation location of the industrial exhaust fan. Be sure to choose a place with good air to avoid affecting the future performance.
Air ventilation buying tips
The development of modern technology has brought many conveniences to family life. People have more demand for home appliances. Air conditioning has functions such as cooling and heating and air purification. To use energy efficiently, we need to know more relevant information before purchasing the product, such as heat recovery and fresh air ventilation heat pump and recuperator ventilation. Let's find out next.
Heat recovery air ventilation is general-purpose equipment in the chemical, petroleum, power, food and many other industrial sectors and occupies an important position in production. In chemical production, heat exchangers can be used as heaters, coolers, condensers, evaporators, and reboilers, etc., and are more widely used. There are many types of heat exchangers, but according to the principles and methods of heat exchange between cold and hot fluids, they can be divided into three categories: partition type, hybrid type and heat storage type. Among the three types of heat exchangers, partition wall heat exchangers are most commonly used.
Air to air heat recuperator ventilation is a device that uses the recovered exhaust heat (cold volume) to reduce the indoor heating and cooling load. It not only can introduce fresh outdoor air but also greatly reduces energy consumption and is environmentally friendly. It introduces fresh air from the outside through several filter devices to perform heat exchange in the heat exchange device and indoor return air, thereby increasing (decreasing) the fresh air temperature and reducing indoor energy consumption. Fresh air ventilation recuperator is divided into sensible heat recovery and total heat recovery. Domestic brands mainly include dream creators full heat fresh air system. Both brands use electrostatic dust removal. The dream maker's fresh air system adds intelligent WIFI control. Because the new heat recovery air fan is to introduce outdoor fresh air, the unit should be installed in a location that communicates with the outdoor and needs good protective measures. Use surface-mounted units as much as possible. Some brands of new air heat recovery fans have dust removal or purification devices, which needs periodical cleaning.
Heat recovery air ventilation recovers the waste heat (cold) or waste heat (cold) inside and outside the building and uses the recovered heat (cold) as a heat source for heating (cold) or other heating equipment. Energy consumption in the construction industry includes energy consumption in the production of building materials, construction, and daily operation of the building. The daily energy consumption of a building is also called the energy consumption of people's livelihood, also called the energy consumption of a building. It includes energy consumption for heating, ventilation, air conditioning, hot water supply, lighting, elevators, cooking, etc. The energy consumption of urban buildings in China accounts for 22% to 24% of the national energy consumption, while developed countries account for about 1/3. Energy consumption also pollutes the environment. Suspended particles, SO2, NOx, and CO that affect the urban atmospheric environment are mainly the consequences of energy consumption. The emissions of greenhouse gases such as CO2 that affect the "global environment" also mainly come from energy consumption. Energy consumption in cities also leads to the "urban heat island" phenomenon. In order to achieve China's sustainable development strategy, building energy conservation is also imperative. The direction of the building is "green building".
One of the energy consumption characteristics of an air-conditioning system is that the system has both heat (cold, wet) and heat (cold, wet) treatment processes. For example, low temperature and low humidity exhaust air in summer can cool and dry fresh air, and high temperature and high humidity exhaust air in winter can heat and humidify fresh air. Using this feature, recuperator fresh air ventilation can effectively recover the air conditioning system, thereby reducing the energy consumption of the air conditioning system. The heat that may be recovered in the building includes the heat of exhaust air, the heat of the inner zone, the heat of the condenser, and the heat of drainage. Finally, villa families with basements can consider buying an air ventilation system for basement.
Applications for air ventilation
The air ventilation system at home is an air circulation treatment system composed of air ventilation equipment, pipeline and so on, which can filter and purify the fresh gas outside and transport it to the indoor through the pipeline, at the same time, the indoor dirty and low oxygen content air is discharged out of the outdoor, and some models of the air ventilation products can also eliminate indoor pollutants such as PM2.5. So, the application for air ventilation has been in a close relationship with our daily life.
The home ventilation system first emerged in Europe and the United States, which is used in high-rise buildings to prevent the danger of window opening, so as to bring the introduction of such a system to breathe. In the 1970s, more than 90 percent of the new homes in Spain contained fresh air systems. In the middle of the last century, the German Organization for Standardization (DIN) published DIN 1964, in which the second part emphasizes that ventilation and air conditioning are technical hygiene requirements. And now in Germany, the residential ventilation system has been integrated into the building, indispensable. In 1989, ASHRAE of the United States established the "Indoor Air Quality Ventilation Code". Today in the United States, indoor installation of fresh air systems has become a must-have. In 2000, the European Union unified residential ventilation standards. In 2003, the installation of Japan's air home ventilation system was listed as a housing standard. In China, some hospitals, production enterprises and restaurants are the pioneers in the installation of heat reclaim air ventilation. In recent years, with the increasingly serious problem of air quality, people's understanding of the harm of PM2.5 and indoor pollution to human body is strengthened, the fresh air exchange system has been unable to meet the needs of people's normal life, and the air home ventilation system with different kinds of air ventilation products has begun to enter the family. So, as a room air ventilation manufacturer, we can tell you that no matter which country you are in, the application of the air ventilation system has spread to every aspect of our life and work especially the application of fresh air purification systems in green buildings.
At present, China is one of the fastest-growing markets for green buildings in the world. The air home ventilation system plays an important role in green buildings: it has the function of ventilation and provides the fresh air that people need to breathe, and expels the polluted air. In the process of introducing outdoor air into the room, through the purification device, the pollutants in the outdoor atmosphere can be eliminated, so that the truly clean air can enter the room, and the pollutants in the outdoor air can be avoided into the room. When the indoor and outdoor temperature difference is large, through the heat recovery device, the air that enters the room in winter is not so cold, and the air that enters the room in summer is not so hot. The home ventilation system used in green buildings mainly includes wall-mounted fresh air machine, cabinet fresh air machine and ceiling fresh air machine and so on.
The selection of air ventilator
If you are not familiar with the heat exchange ventilator or air ventilation heat recovery ventilator, we, as an experienced air ventilator supplier and air ventilator machine manufacturer, sincerely advise you to select an air ventilator by comparing the advantages and disadvantaged of each type of the air ventilator. As you may know, the household fresh air system can be divided into three types according to the type of exhaust air: one-way flow fresh air system, two-way flow fresh air system, and total heat exchange central fresh air system.
First of all, one-way fresh air system is simply called "forced exhaust air, natural air supply" system. It is mainly composed of fan, inlet, outlet and various pipes and joints. During the operation of the system, the fresh air will drain the dirty air out of the room. This produces a strong air pressure difference indoors and outdoors, and outdoor clean and fresh air is forced to be transported indoors to achieve the function of ventilation and ventilation. Generally speaking, for the household one-way fresh air system, air outlet is usually installed in the kitchen, bathroom and other dirty air gathering places. And the fresh air inlet will be installed in the bedroom, living room doors and windows, and directly connected to the outdoor. The advantages of it include: its installation is simple and it is of low cost. In the one-way fresh air system, the door under the bedroom, secondary bedroom and living room lamp door can be used as the fresh air inlet without additional investment. Besides, its running noise is small and will not affect the normal quality of life.
Second of all, the function of the exhaust system in the design of the two-way flow system is basically the same as that of the one-way flow fresh air system, but the fresh air in the two-way flow fresh air system is fed by the fresh air mainframe, which can ensure the clean freshness of the indoor air. Its advantages include: it can be sterilized, dusted, adsorbed and with other purification treatment abilities, which can ensure the air quality of fresh air. At the same time, it can also adjust the running noise by adjusting the main engine air volume. Its shortcomings are: due to the large number of pipeline laying and the complexity of the air ventilation system and due to the increase of mechanical air supply system, there are many factors to be considered, and the investment is also relatively large.
The last but not the least, the total heat exchange fresh air machine is a kind of fresh air and exhaust air equipment which contains the whole heat exchange core, AKA, air ventilation with heat recovery. When the equipment is in operation, the indoor exhaust air and the fresh air flow through the air ventilation with heat recovery in a positive cross mode respectively. Due to the existence of temperature difference and steam split pressure difference on both sides of the air flow separation plate, the heat and mass transfer phenomenon of the two air flow through the separation plate causes the whole heat exchange process.
How often should you ventilate your house?
In recent years, with the increasingly serious air pollution and the widespread concern of the public about indoor air quality, various technologies to improve air quality have been promoted and used. The more widely used are the air ventilation system in whole house and the air filtration ventilation system at home. Air purifiers usually have a good effect only when the doors and windows are tightly closed. At this time, the indoor air is in an "endless cycle" in a closed space. Although pollutants can be controlled, there is no fresh air in the room and there is no substantial improvement in air quality, and traditional air purifiers take up indoor use area. In contrast, the filter-type fresh air system can introduce fresh outdoor air, filter out the pollutants and send them into the room, which can reduce indoor pollutants and improve indoor air quality. However, the traditional home air filtration ventilation system requires openings in the building's external walls or doors and windows and requires the installation of complex equipment and pipes to send outdoor fresh air into the interior. Used in unfurnished buildings. For existing buildings that have been renovated and even have residents living for a long time, opening holes in external walls or doors and windows will damage the building structure and cause hidden safety hazards. In addition, during the installation of holes and equipment and pipes, and after construction During the restoration of the original decoration, dust, harmful substances and other pollution will be generated. Therefore, for a large number of existing buildings and new buildings that are growing rapidly, a filtering and air ventilation device that is simple to install, does not damage the building structure, and does not need to be renovated is needed.
House ventilation and air filters supplier invented an air ventilation device for filtering and purifying and also discharging indoor air to outside that belongs to the technical field of air ventilation and air purification processing. It includes a main casing and a control system. The main casing is installed under the window sill of the window, and the air supply channel is installed in the middle of the window. The fresh air is introduced through the fresh air inlets on the left and right outdoor sides of the main casing. Fresh air is sent indoors. This device can use the space under the window sill and the original window structure to achieve air supply, but the disadvantages are: it is necessary to punch holes in the external wall to introduce fresh air, and it needs to use a special window frame structure, and the original window needs to be replaced. It can only achieve a single air supply function.
The installation method provided by the house air filters ventilation supplier is such that the fresh air device is fixed to the window frame through the connecting body, and the fresh air can be introduced without removing the window or opening holes in the wall or glass. However, it has the following disadvantages: the invention uses magic buckles, magnetic materials or glue to connect the shell protector and the window frame, and the shell protector includes devices such as fans and filters, so it is difficult to achieve a firm connection, and there is a vibration problem when the device operates. The fresh air device is installed on the window frame, which affects the natural lighting of the window, and when the fresh air device is not used, natural ventilation cannot be performed.

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