CN106196309B - Fresh air all-in-one machine integrating air treatment, energy recovery and oxygenation functions - Google Patents

Abstract

The invention discloses a fresh air integrated machine integrating air treatment, energy recovery, and oxygen increasing functions, which belongs to the technical field of air purification and building ventilation and energy saving. Materials, heat exchange devices, molecular sieve nitrogen and oxygen separators and other equipment and their auxiliary valves comprehensively solve the problems of poor indoor environment comfort and large ventilation energy consumption. The new fresh air treatment device is divided into air treatment module, energy recovery module, oxygenation module, automatic control module, mainly composed of dryer, high efficiency air filter, air purification device, phase change energy storage material device, heat exchange device, molecular sieve nitrogen Oxygen separator, compressor, valve, muffler, etc. In the process of adjusting the indoor heat and humidity environment and improving the air quality, the present invention controls and executes the operating states of different module systems through the monitoring and feedback of the system automatic control module, so as to achieve good quality of the indoor environment.

Description

A fresh air all-in-one machine integrating air treatment, energy recovery, and oxygenation

technical field

The invention belongs to the technical field of building energy-saving ventilation and air purification, and relates to a fresh air treatment device, which can simultaneously realize purification and dehumidification of indoor and outdoor air, energy recovery, automatic oxygenation and automatic control operation of the device.

Background technique

The traditional natural ventilation technology is the most direct and energy-saving way to meet the fresh air demand in the building and improve the indoor environment. In the face of problems such as aggravated outdoor air pollution and frequent smog, natural ventilation technology cannot improve the indoor air quality. On the contrary, it will aggravate indoor air pollution. At present, installing a clean fresh air system or indoor purification system in buildings has become an important solution to improve indoor air quality in the current environment, but there are problems such as increasing energy consumption of building equipment, low purification level, and single application conditions And other issues. Therefore, while meeting the demand for indoor fresh air volume, how to design an optimal fresh air treatment method in terms of energy saving and improving indoor air quality is a key issue that needs to be solved urgently.

After retrieval, it is found that Patent No. CN201410659997.1 discloses a fresh air treatment device for indirect evaporative cooling and return air full heat recovery. Lower the temperature so that the return air and fresh air are close to the saturation line during the total heat recovery process, improve the efficiency of the total heat recovery device, and improve the energy efficiency of fresh air treatment; this technology only recovers energy for indoor return air, and lacks purification treatment for outdoor fresh air. It is suitable for the condition of good outdoor air environment. Patent No. CN201510559201.X discloses a fresh air purification and ventilation system. Its main features are: setting up a fully hot fresh air system and an indoor purification system independent of each other, which can simultaneously realize two functions of purifying indoor air, fresh air and energy recovery; The technology adopts a single-stage energy recovery device, and the components of the purification device are activated carbon filter screen and ESP electrostatic dust collection filter screen. Therefore, the energy recovery efficiency of this technology is low, and it cannot effectively remove fungi in the air. Patent No. CN201510286952.9 discloses a split air conditioner with a fresh air purification intelligent control device. Its main feature is that two modes of external circulation and internal circulation can be completed by monitoring the indoor air quality. The device ensures that the indoor air outlet can inhale particulate matter The concentration of PM2.5 can be filtered to more than 90% at one time, and effectively remove indoor VOC harmful gases; this technology has disadvantages such as incapable of energy recovery and single purification of harmful gases. Patent No. CN201420848604.7 discloses an automatic alarm fresh air purifier, its main feature is: use the main control circuit to compare the monitored signal types (temperature sensor, humidity sensor, VOC sensor, _CO2 sensor) with the stored data, When the transmission data is abnormal with normal operation, the device will automatically alarm; this technology only provides the alarm function, and cannot provide feedback based on the monitoring data, so that the device can operate in the corresponding fresh air mode to promote the indoor environmental parameters to meet the national standard requirements.

Contents of the invention

The purpose of the present invention is to provide a fresh air all-in-one machine integrating air treatment, energy recovery, and oxygen enhancement, which can monitor indoor and outdoor air environment parameters in real time, and control the operating mode of the fresh air processing device according to the monitored data; Fresh air or indoor return air is used for dehumidification/humidification, purification and dust removal to meet indoor air quality requirements, and energy recovery for indoor exhaust air to reduce the increased load of outdoor fresh air entering the room. At the same time, it can automatically deliver oxygen to the room, which can be used by normal people for brain power. For patients who are overworked or need oxygen. The invention solves the practical problems of imperfect auxiliary functions of the original fresh air treatment system, single application conditions, and inconsistency with the actual living environment of indoor residents.

The present invention is achieved through the following technical solutions:

A fresh air all-in-one machine integrating air treatment, energy recovery, and oxygen enhancement, including an air treatment module, an energy recovery module, an oxygen enhancement module, and an automatic control module;

The air processing module dehumidifies/humidifies, purifies and removes dust from outdoor fresh air or indoor return air;

The energy recovery module is connected to the output end of the air processing module, including a phase change energy storage device and a heat exchange device; the indoor exhaust air is recovered from the energy of the outdoor fresh air through the heat exchange device, and the heat is transferred to the outdoor fresh air; the phase change The accumulator is the secondary energy storage for the indoor exhaust air, and the valve controls the phase change material to alternately recover and store energy from the indoor exhaust air, and release heat to the outdoor fresh air;

The oxygen increasing module is controlled by an automatic control module, and the automatic control module adjusts the oxygen increasing module to realize oxygen increasing according to the values monitored by the indoor environment parameters.

The automatic control module adjusts the air processing module, the energy recovery module and the oxygen increasing module according to the indoor and outdoor environmental parameters.

Further, the aeration module includes a dryer II, a compressor, and a molecular sieve nitrogen-oxygen separator connected in series; the aeration module is switched on and off by a three-way valve.

Further, the air treatment module includes a dryer I, a high-efficiency air processor, and an air cleaning device connected in series in sequence. Dehumidification, purification and dust removal are carried out on outdoor fresh air or indoor return air to make it meet the requirements of indoor air quality, and comprehensively solve the problems of outdoor environment haze and indoor air quality not up to standard.

Further, the air purification device uses the photocatalysis of nano-titanium dioxide to purify harmful gases in fresh air or return air, and sunlight enters the mesh coated with titanium dioxide through the light-transmitting plate. Among them, the reflector effectively reflects the incident excess sunlight to the net coated with titanium dioxide; when the sunlight is relatively weak, turn on the purple fluorescent lamp to catalyze the titanium dioxide.

Further, the medium gas channel of the heat exchange device will form a certain thermal pressure under the condition of electric heating or passive solar heating in summer working conditions, thereby accelerating the cooling speed of the fresh air due to the evaporation of the medium in the lower liquid storage tank, The heat exchange medium in the gas state will enter the upper liquid storage tank along the medium gas channel, and use the low-temperature exhaust air to condense the gaseous medium, and the medium liquid will flow into the lower liquid storage tank along the medium liquid channel under the action of gravity , so as to complete the energy heat exchange cycle. Wherein the heat exchange medium adopts acetone. In winter working conditions, it is only necessary to reverse the exhaust pipe and the fresh air pipe. The driving force of the heat exchange device is mainly solar energy, supplemented by electric energy, which can effectively reduce the energy consumption of traditional fresh air fans.

Furthermore, outdoor fresh air first passes through a three-way valve and a centrifugal fan, and then enters the air processing module.

Further, the phase-change accumulator includes a housing, and the inside of the housing is divided into multiple independent spaces by the insulation layer, each independent space is filled with phase-change materials, and each independent space is connected to A duct pipe with a one-way valve on each duct pipe.

The indoor exhaust air recovers energy with the outdoor fresh air through the heat exchange device, and transfers the heat to the outdoor fresh air. The phase change energy storage is used to store the secondary energy of the outdoor exhaust air, and the phase change material is controlled by the valve to alternately absorb from the outdoor exhaust air. Store energy and release heat to outdoor fresh air. This module can solve the problem of low energy recovery rate of traditional heat exchangers, reduce the increased load of outdoor fresh air entering the room, and has a greater energy-saving effect.

Further, the automatic control module includes a controller, in which there are self-cleaning mode, fresh air mode, aeration mode and automatic mode; the controller is connected with temperature sensor, humidity sensor, PM2.5 detector, The _CO2 detector is connected to the alarm device. Monitor and feed back the indoor CO ₂ , temperature, humidity and PM2.5 values, and if the limit value is exceeded, the corresponding parts will be turned on.

Further, an exhaust duct communicating with the outdoor is provided indoors, and the exhaust duct sequentially passes through the heat exchange device and the phase-change accumulator to exhaust the indoor air to the outdoor.

Further, there is also a fresh air pipeline connected to the outdoor in the room, and the fresh air pipeline passes through the air treatment, the phase change accumulator and the heat exchange device in sequence (in the aeration mode, it can pass through the air compressor, the molecular sieve nitrogen and oxygen separation) device) to guide the outdoor fresh air into the room.

The automatic control module provides an alarm function. When the environmental parameter monitoring value exceeds the national regulation value, it will automatically alarm, and will automatically select the corresponding operation mode to buffer the excessive environmental parameter value.

Effect and benefit of the present invention are:

Under the global concept of advocating intelligent and healthy indoor living environment, a fresh air treatment device with air treatment, energy recovery, and oxygen enhancement is proposed, which is in line with my country's energy-saving and emission-reduction policies, and at the same time improves indoor air quality in all aspects. In the process of improving indoor air quality, under the control of the automatic control module, different module systems cooperate with each other to achieve the best indoor air quality and energy-saving effect, and meet the quality of life needs of indoor residents.

Compared with other fresh air treatment devices, the present invention can effectively remove harmful substances such as fungi, reduce the energy consumption of traditional heat exchange devices, improve the heat recovery rate of the heat exchanger and automatically increase oxygen, and meet the needs of different groups of people. The invention can be applied in different building types, and has very important significance for improving the indoor air quality of buildings and the health of indoor residents.

Description of drawings

Figure 1 is a schematic diagram of a fresh air all-in-one machine integrating air treatment, energy recovery, and oxygenation;

Fig. 2 is a schematic diagram of the display screen of the automatic control module;

Figure 3 is a schematic diagram of the use of the fresh air integrated machine combined with the building;

Fig. 4 is a plan view of a phase change accumulator;

Fig. 5 is a three-dimensional 1-1 sectional view of a phase change accumulator;

Fig. 6 is a schematic diagram of a heat exchange device;

Fig. 7 is a schematic diagram of an air cleaning device;

In the picture: 1-1, 1-2, 1-3, 1-4-three-way valve, 2-1, 2-2-centrifugal fan, 3-1, 3-2-dryer, 4-high efficiency filter device, 5-air purification device, 6-phase change accumulator, 7-compressor, 8-heat exchange device, 9-molecular sieve nitrogen oxygen separator, 10-1, 10-2 muffler, 11-1, 11- 2. 11-3, 11-4-one-way valve, 12-controller, 13-alarm bell, 14-1-outdoor monitoring probe point, 14-2-indoor monitoring probe point, 15-monitoring display screen, 16- Control switch, 17-self-cleaning mode, 18-fresh air mode, 19-oxygenation mode, 20-automatic mode, 21-air volume level, 22-dehumidification/humidification, 23-monitoring and alarming, 24-wall, 25-energy recovery module, 26-air treatment module, 27-exhaust outlet, 28 aeration module, 29-air inlet, 30-air duct, 31-expansion duct, 32-insulation layer, 33-phase change material, 34-honeycomb air duct , 35-phase change accumulator housing, 36-medium liquid channel, 37-lower liquid storage tank, 38-upper liquid storage tank, 39-electric heating film, 40-medium gas channel, 41-exhaust pipe, 42 - fresh air duct, 43 - transparent cover plate, 44 - mesh coated with titanium dioxide, 45 - fluorescent lamp, 46 - transparent plate, 47 - reflective plate.

detailed description

The following is a detailed description of the specific implementation of the present invention in combination with technical solutions and accompanying drawings.

Specific implementation plan 1: As shown in Figure 1, a fresh air all-in-one machine integrating air treatment, energy recovery, and oxygen enhancement is composed of a three-way valve, a centrifugal fan, a dryer, a high-efficiency air filter, and an air purification device , phase change accumulator, heat exchange device, compressor, molecular sieve nitrogen and oxygen separator, muffler, one-way valve;

The fresh air treatment device is divided into an air treatment module, an energy recovery module, an aeration module, and an automatic control module;

The air treatment module is composed of a dryer I, a high-efficiency air filter, an air purification device, and a three-way valve. Under the action of the centrifugal fan 2-1, the air treatment module sequentially dehumidifies and removes dust from outdoor fresh air or indoor return air , Purify harmful fungi in the air;

As shown in Figure 7, the air purification device 5 utilizes the photocatalysis of nano-titanium dioxide to purify the harmful gases in the fresh air or return air. The incident excess sunlight is reflected to the mesh coated with titanium dioxide; when the sunlight is relatively weak, the fluorescent lamp is turned on to catalyze the titanium dioxide.

The energy recovery module is composed of a phase-change accumulator 6 and a heat exchange device 8, and then achieves the double function of energy recovery and storage. The phase-change accumulator 6 is set in the form of fresh air and exhaust air alternately, through the valves 11-1, 11- 2. 11-3, 11-4 control the opening and closing of the fresh air and exhaust air ducts, so that the heat storage and heat release process of the phase change material at the corresponding position has a certain reaction time;

As shown in Figure 6, the medium gas channel in the heat exchange device in summer will form a certain thermal pressure under the condition of electric heating or passive solar heating, thereby accelerating the evaporation of the medium in the lower liquid storage tank to the fresh air. Cooling speed, the heat exchange medium in the gas state will enter the upper liquid storage tank along the medium gas channel, and use the low temperature of the exhaust air to condense the gaseous medium, and the medium liquid will flow down along the medium liquid channel under the action of gravity The liquid storage tank completes the energy heat exchange cycle. Wherein the heat exchange medium adopts acetone. In winter working conditions, it is only necessary to reverse the exhaust pipe and the fresh air pipe. The driving force of the heat exchange device is mainly solar energy, supplemented by electric energy, which can effectively reduce the energy consumption of traditional fresh air fans.

The aeration module is composed of a dryer 3-2, a compressor 7, and a molecular sieve nitrogen-oxygen separator 9, and the opening and closing of the aeration module is controlled by a three-way valve 1-3;

The operating status of all modules is controlled by the automatic control module, which consists of device switch 16, monitoring alarm 23, self-cleaning mode 17, fresh air mode 18, oxygenation mode 19, automatic mode 20, air volume level 21, and dehumidification/humidification 22. The operation of the device is completed through the automatic control module.

Monitoring alarm 23 can monitor the indoor and outdoor environment, and set the corresponding alarm value, comprehensively collect indoor relative humidity, PM2.5 concentration, _CO2 concentration, harmful gas concentration and outdoor PM2.5 concentration, according to the feedback of monitoring data, Decide the opening and closing of the alarm system, and then select the operating mode of the system;

According to the feedback of monitoring data, the three-way valves 1-1 and 1-2 can control the opening and closing of fresh air or exhaust air, and complete the process of air dehumidification, dust removal, and purification of harmful fungi in the air;

Use the monitoring alarm 23 of the automatic control module to monitor and feed back the indoor _CO2 . If the limit value is exceeded, the three-way valves 1-3, 1-4 will open the oxygenation mode and the fresh air mode, thereby increasing the indoor _O2 concentration and reducing the indoor CO2 concentration. Air _CO2 concentration.

The energy recovery module makes full use of the heat of the indoor exhaust air, and under the joint action of the phase change accumulator 6 and the heat exchange device 8, transfers the recovered heat to the outdoor fresh air, so as to reduce the increased load of the outdoor fresh air entering the room , wherein the application of the phase change accumulator 6 can improve the heat recovery efficiency of the heat exchanger, and greatly improve the energy saving rate of the fresh air integrated machine.

The purification and dehumidification module is composed of dryer 3-1, humidifier, high-efficiency air processor, and air purification device. It can dehumidify/humidify and purify the outdoor fresh air or indoor return air. The air purification device is to remove the air containing Harmful bacteria and VOC substances, improve the purification level of the fresh air all-in-one machine, and provide more reliable protection for the lives of indoor residents.

The oxygenation module is composed of a dryer, a compressor, and a molecular sieve nitrogen-oxygen separator, which can selectively deliver oxygen to the room to meet the needs of different types of people in the room.

The specific working process is as follows:

The outdoor air passes through the three-way valve 1-1, the centrifugal fan 2-1, the dryer 3-1, the high-efficiency filter 4, the air purification device 5, enters the phase change accumulator 6, and then flows from the phase change accumulator The accumulator 6 enters the heat exchange device 8, and under the joint action of the phase change accumulator 6 and the heat exchange device 8, the heat recovered from the exhaust air is transferred to the outdoor fresh air, so as to reduce the increased load of the outdoor fresh air entering the room The purpose of which is that the application of the phase change accumulator 6 can improve the heat recovery efficiency of the heat exchanger, greatly improving the energy saving rate of the fresh air all-in-one machine; the fresh air from the heat exchanger 8 passes through the three-way valve 1-3, the three-way Valve 1-4, after entering into the room.

The exhaust duct of the heat exchange device 8 is connected with the three-way valve 1-2;

The three-way valve 1-1, the three-way valve 1-2, the three-way valve 1-3, and the three-way valve 1-4 are all controlled by the controller 12; the controller 12 is connected to the device control switch 16, and the self-cleaning mode is set on the controller 17. Fresh air mode 18, aeration mode 19, automatic mode 20, air volume level 21, dehumidification/humidification 22 and monitoring alarm 23.

At the same time, a molecular sieve nitrogen-oxygen separator 9 is installed in the all-in-one machine, and the fresh air coming out from the heat exchange device 8 enters the molecular sieve nitrogen-oxygen separator 9 through the dryer 3-2 and the compressor 7, and the oxygen produced by the molecular sieve nitrogen-oxygen separator 9 is sent to Into the room, nitrogen sent to the outside.

Mufflers 10-1, 10-2 are also installed indoors.

As shown in Figure 3-5, the paraffin organic phase change material is filled in the phase change accumulator, and the heat storage and release process time of the phase change material is controlled by the valve to collect the waste heat in the exhaust air as much as possible;

Specifically, the interior of the phase change accumulator housing 35 is divided into four independent spaces by three insulation layers, each space is filled with phase change materials and honeycomb air ducts 34, and each of the four independent spaces is connected to an air duct The pipes 30 are four air ducts 30 in total, and each of the four air ducts 30 is provided with a one-way valve 11-1, 11-2, 11-3, 11-4; the end of the air duct 27 passes through The air expansion pipe 31 is connected with the phase change accumulator 6 .

As shown in Figure ₂ , all the operating modes of the fresh air all-in-one machine are controlled by the automatic control system, and the display screen of the automatic control system is composed of outdoor air quality (temperature, humidity, PM2.5), indoor air quality (temperature, humidity, PM2.5, VOC), system operation diagram, system switch, fresh air mode, self-purification mode, oxygenation mode, air volume level, dehumidification/humidification, alarm composition, indoor residents can choose any one according to the indoor and outdoor air display values and their own needs The system operation mode and air volume level, and the automatic operation mode can also be selected. The system will compare the monitoring value of the environmental parameters with the set parameters, and automatically select the corresponding operation mode and air volume level.

As shown in Figure 3, the application method of the fresh air integrated machine in the building is relatively flexible. It can be installed outdoors or placed indoors. Different application methods only need to design two ventilation ducts for the outdoor fresh air and outdoor. Ventilation ducts for indoor return air;

Specifically, a fresh air all-in-one device is installed on the wall 24, including an air processing module 26, an energy recovery module 25, and an oxygenation module 28, wherein the air processing module 26 is provided with an air inlet 29 and an air outlet 27.

Although the specific implementation of the present invention has been described above in conjunction with the accompanying drawings, it does not limit the protection scope of the present invention. Those skilled in the art should understand that on the basis of the technical solution of the present invention, those skilled in the art do not need to pay creative work Various modifications or variations that can be made are still within the protection scope of the present invention.

Claims (6)

1. A fresh air all-in-one machine integrating air treatment, energy recovery, and oxygen enhancement, characterized in that it includes an air treatment module, an energy recovery module, an oxygen enhancement module, and an automatic control module; The air processing module dehumidifies/humidifies, removes dust and purifies harmful gases for outdoor fresh air or indoor return air; The energy recovery module is connected to the output end of the air processing module, and includes a phase change energy storage device and a heat exchange device; the indoor exhaust air recovers the total heat energy with the outdoor fresh air through the heat exchange device, and transfers heat to the outdoor fresh air; The phase-change accumulator includes a shell, and the inside of the shell is divided into multiple independent spaces by the insulation layer, and each independent space is filled with phase-change materials, and each independent space is connected to an air duct There is a one-way valve on each air duct. The phase change accumulator is used to store the secondary energy of the outdoor exhaust air. The phase change material is controlled by the valve to alternately absorb and store energy from the indoor exhaust air and transfer it to the outdoor air. Fresh air releases heat; The oxygen-increasing module is controlled by an automatic control module, and the automatic control module adjusts the oxygen-increasing module to realize oxygen-increasing according to the values monitored by indoor environmental parameters; The operating status of all modules is controlled by the automatic control module. The automatic control module includes device switch, monitoring and alarm, self-cleaning mode, fresh air mode, oxygenation mode, automatic mode, air volume level, dehumidification/humidification, and the automatic control module according to indoor and outdoor environmental parameters, Adjust the operation mode among the air treatment module, energy recovery module and aeration module to complete the operation of the device; In the heat exchange device, under the summer working conditions, the medium gas channel will form a certain thermal pressure under the condition of electric heating or passive solar heating, thereby accelerating the cooling speed of the fresh air due to the evaporation of the medium in the liquid storage tank. The heat exchange medium will enter the upper liquid storage tank along the medium gas channel, and use the low temperature of the exhaust air to condense the gaseous medium, and the medium liquid will flow into the lower liquid storage tank along the medium liquid channel under the action of gravity, so that Complete the energy heat exchange cycle; the heat exchange medium uses acetone; in winter, it is only necessary to reverse the exhaust pipe and the fresh air pipe; The air treatment module includes a dryer I, a high-efficiency air processor and an air purification device connected in series in sequence. The air purification device uses the photocatalysis of nano-titanium dioxide to purify the harmful gases in the fresh air or return air. The light is incident on the mesh coated with titanium dioxide through the light-transmitting plate, and the reflective plate reflects the incident excess sunlight to the mesh coated with titanium dioxide; the fluorescent lamp is turned on to catalyze the titanium dioxide. 2. The fresh air all-in-one machine integrating air treatment, energy recovery, and oxygen enhancement as claimed in claim 1, wherein the automatic control module includes a controller, and a self-cleaning mode is set in the controller , fresh air mode, aeration mode and automatic mode. 3. The fresh air all-in-one machine integrating air treatment, energy recovery, and oxygenation as claimed in claim 1, wherein the oxygenation module includes a dryer II, a compressor, and a molecular sieve for nitrogen and oxygen separation in series in sequence device; the on-off of the oxygen-increasing module is controlled by a three-way valve. 4. The fresh air all-in-one machine integrating air treatment, energy recovery, and oxygen enhancement as claimed in claim 2, characterized in that, the controller is connected with a temperature sensor, a humidity sensor, a PM2.5 detector, and a _CO2 detection connected to the alarm device. 5. The fresh air all-in-one machine integrating air treatment, energy recovery, and oxygen enhancement as claimed in claim 1, wherein the outdoor or indoor air first passes through a three-way valve and a centrifugal fan before entering the air processing module . 6. The fresh air all-in-one machine integrating air treatment, energy recovery, and oxygen enhancement as claimed in claim 1, characterized in that, an exhaust duct communicating with the outdoor is also provided in the room, and the exhaust ducts pass through in sequence After connecting the heat exchange device and the phase change accumulator, the indoor air is exhausted to the outside.

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