CN107084456A - Double mode fresh air purifier and the indoor air purification circulatory system - Google Patents

Abstract

Provide a dual-mode fresh air purifier and indoor air purification circulation system, the fresh air filter part and the return air filter part are connected through a mode conversion chamber; an opening or a through hole is opened on the back shell of the mode conversion chamber, and the opening or through hole When it is used for return air, it is an indoor air return port, and when this opening or through hole is used for fresh air outlet, it is a fresh air supply port. The structure of the present invention can obtain two kinds of operation modes, the first one is the air purification large circulation mode, wherein the two fans are at normal speed, and the opening or through hole is the air return port; the second is the pure fresh air purification mode, wherein the second fan is In low-speed operation mode, the opening or through hole is the fresh air supply port to deliver fresh air to other rooms. The present invention realizes dual-mode conversion by adding a mode conversion chamber, controls and changes the output air volume of the two fans, and matches different specific working modes, so as to solve the problem that the haze weather seriously troubles people's livelihood and the indoor carbon dioxide content exceeds the standard in daily life.

Description

Dual-mode fresh air purifier and indoor air purification circulation system

technical field

The invention belongs to the field of air purification, and in particular relates to a fresh air purifier for dealing with haze weather.

Background technique

In recent years, there have been large-scale continuous smog days in China. At the same time, the smog index in various places has frequently exceeded the table. Students and kindergartens have to suspend classes and holidays. The respiratory health of most residents is seriously threatened.

Haze weather is a state of air pollution. Haze is a general expression of the excessive content of various suspended particulate matter in the atmosphere, especially PM2.5 (particulate matter with an aerodynamic equivalent diameter less than or equal to 2.5 microns) is considered to cause haze The "culprit" of the weather. Along with the deterioration of air quality, increasing appears in the phenomenon of cloudy weather, and harm increases the weight of. In many areas of China, the haze weather phenomenon is incorporated into fog as disastrous weather early warning and forecasting, collectively referred to as "smog weather".

The composition of haze is very complex, including hundreds of atmospheric chemical particulate matter, among which the harmful to health are mainly aerosol particles with a diameter of less than 10 microns, such as mineral particles, sea salt, sulfate, nitrate, organic aerosol particles, fuel and Vehicle exhaust gas, etc., in terms of chemical composition, is mainly composed of three items: sulfur dioxide, nitrogen oxides, and inhalable particulate matter. They combine with fog to make the sky instantly dark and gloomy. This particle itself is not only a pollutant, but also a carrier of toxic substances such as heavy metals and polycyclic aromatic hydrocarbons. It can directly enter and adhere to the human respiratory tract and alveoli. In particular, submicron particles will be deposited in the upper and lower respiratory tracts and alveoli, respectively, causing acute rhinitis and acute bronchitis and other diseases. For patients with chronic respiratory diseases such as bronchial asthma, chronic bronchitis, obstructive emphysema and chronic obstructive pulmonary disease, haze weather can cause acute attack or acute exacerbation of the disease. If you stay in this environment for a long time, it will also induce lung cancer. Haze days also have a serious impact on human cardiovascular and cerebrovascular diseases, which will hinder normal blood circulation, lead to cardiovascular disease, hypertension, coronary heart disease, cerebral hemorrhage, and may induce angina pectoris, myocardial infarction, heart failure, etc., causing chronic bronchitis Pulmonary heart disease, etc. In addition, the air pressure in dense fog is relatively low, people will have a feeling of irritability, and blood pressure will naturally increase. On the other hand, the temperature is often low in foggy days. Some patients with high blood pressure and coronary heart disease suddenly walk from a warm room to a cold room.

Smog has seriously affected the lives of the people, even threatening life and health. People's demand for air purification equipment is increasing day by day.

The air purifiers or purification units currently on the market have the following problems:

1. Using electrostatic electronic dust removal type, ozone type, negative oxygen ion type, photocatalytic technology, etc., the purification effect is limited, and the resulting electrostatic adsorption and dust accumulation will damage the indoor air and bring radiation and other hazards.

2. Using filter technology, the filter-type air purifiers currently on the market are placed in the room, because the circulation system is small, so it cannot effectively purify the indoor air; especially some air purification products in developed countries , because the ambient air quality is generally high, there is no need to develop an air purifier for haze weather, and its filtration and purification effect is far from meeting the requirements of the PM2.5 filter level.

3. In addition, in China, due to the serious outdoor air pollution, the filter element needs to be replaced frequently, which is inconvenient and expensive to use, which is not conducive to the year-round use of ordinary households.

4. All kinds of indoor air purifiers have local circulating air, which cannot improve the indoor air environment as a whole, and have no real beneficial purification effect.

5. More importantly, all kinds of indoor air purifiers do not have the function of fresh air, and cannot supply fresh air to the room. In foggy weather, it is even more necessary to keep the doors and windows closed. At this time, the indoor carbon dioxide exceeds the standard, and the human body feels drowsy. Good for growth and health.

6. Due to the limited indoor space of most families, it is not conducive to the installation of large-scale air purification units. In addition, the demand for air purification has become prominent in the past two years, and the decoration of most urban families has been completed, which is not conducive to the installation of integrated fresh air systems. etc., and the pattern of the existing room cannot be changed.

Therefore, it is necessary to develop an air purification device that truly blocks PM2.5 so that the respiratory system no longer breathes in harmful particles; at the same time, it can provide fresh air to ensure the oxygen supply in the human body; In the case of circulation, it also needs to be small in size, easy to install, low in maintenance costs, easy to promote and use, create a healthy, green, and free-breathing working, living, and learning environment for people, and solve the current haze weather that seriously plagues people's livelihood. .

This application is a series of applications of ZL2015102152183 and ZL2015101356164. The existing problems of the fresh air purifier with double fans include: 1. When the fresh air is operated alone, the fresh air needs to be discharged through the double-layer filter module, which affects the efficiency of the fresh air and increases the efficiency of the fresh air. The suction power of the return air fan causes the problem of increased cost and noise; 2. The fresh air channel cannot supply air to multiple rooms at the same time.

Contents of the invention

Aiming at one or more technical problems above, the present invention provides a dual-mode fresh air purifier and an indoor air purification circulation system, which further optimizes the structure of the dual-fan purifier, improves the design of the fresh air channel, and adjusts the return The speed of the fan can make the fresh air filter in two modes: one is to supply fresh air only through one layer of filtration, and the other is to mix the fresh air and return air and then carry out secondary filtration, and then The air is released to the room; thereby improving the efficiency of the fresh air and return air fans, reducing noise, and improving the cost performance of the whole machine, it is more suitable for ordinary consumers to choose.

In addition, the dual-mode fresh air purifier of the present invention can purify the room in two modes: one is the air purification cycle mode, as shown in Figure 7; the other is the pure fresh air purification mode, as shown in Figure 8.

In addition, the dual-mode fresh air purifier of the present invention can supply fresh air to multiple rooms at the same time, ensuring sufficient oxygen supply to the rooms.

In addition, the present invention is additionally equipped with a fresh air guide plate, which can keep the fresh air output in the same flow direction when guiding the fresh air, and prevent the fresh air from blowing off the pollutants on the surface of the high-efficiency filter element.

At the same time, the dual-mode fresh air purifier of the present invention can remove PM2.5 to a level of 0.1 micron, which is better than the existing 0.3 micron effect. It has small structural size, low cost, low noise, low filter element replacement cost, and is suitable for placement The beneficial effect of indoor use, its benzene removal, formaldehyde removal, deodorization, and smoke removal effects can all achieve significant cleaning effects. In addition, it has a powerful wind adjustment function, which can freely adjust fresh air and indoor air circulation according to changes in outdoor air quality. Wind ratio, energy saving and environmental protection.

The dual-mode fresh air purifier of the present invention not only aims to solve the increasingly serious air pollution problem, but also to get rid of the high price while ensuring the purification effect through scientific and rationalized innovative structural design, so that ordinary families can also use it for the benefit of the people , especially for the old, weak, sick, pregnant and infant groups, it can provide a green and healthy living environment, so that children's bodies and brains can grow up healthily, prevent early diseases, make the weak and sick patients recover as soon as possible, and enable healthy people to breathe clean air , do not accumulate dust, pollutants and toxins in the body, prevent and treat various chronic diseases or serious diseases such as cancer, and ensure the quality of life.

In order to achieve the above object, the technical scheme adopted in the present invention is:

A dual-mode fresh air purifier, characterized in that,

It includes a fresh air filter part and a return air filter part. The fresh air filter part includes a fresh air outlet, a first fan, and a first filter module; the return air filter part includes a second fan, a second filter module, and an indoor air supply port;

The fresh air filter part and the return air filter part communicate through the mode conversion chamber;

There is at least one opening or through hole on the shell of the mode conversion chamber to communicate with another room or space. The opening or through hole is used for two purposes. When used for return air, it is the air return port, and when the opening or through hole is used for fresh air outlet, it is the fresh air supply port.

Further, the following channels are included:

The mode conversion cavity is connected in parallel with two fresh air outlet channels: the first channel, fresh air enters the return air filter part, and then enters the room through the air supply port to supply fresh air, and the second channel enters another room or space through the fresh air exhaust port to supply fresh air;

Return air channel: The return air from another room is discharged through the mode conversion chamber and the return air filter through the indoor air supply port.

Further, the first fan and the second fan are fans with adjustable air volume, and the different modes of the fresh air purifier are realized by matching the air volume of the two fans. When the air volume of the first fan is smaller than that of the second fan, it is connected to the The opening or through hole is the indoor air return port; when the air volume of the first fan is greater than that of the second fan, the opening or through hole connected to another room is the fresh air supply port.

Further, a controller is included, and the controller is connected to the first fan and the second fan; the controller controls the respective rotational speeds of the two fans to realize the adjustment of the respective output air volumes of the two fans.

Further, the first fan is arranged in the first volute cavity, the arc-shaped air outlet channel of the first volute cavity is connected to the mode conversion cavity, and the mode conversion cavity is a long cavity;

The suction port of the first fan is connected to the first filter module, the first filter module is connected to the fresh air inlet chamber, and the fresh air inlet chamber is connected to the fresh air outlet;

The second fan is arranged in the second volute-type cavity, and the arc-shaped air outlet channel of the second volute-type cavity communicates with the air supply port on the casing through the second air outlet cavity;

The second volute cavity, the second filter module, and the long cavity are arranged side by side; the long cavity communicates with the suction port of the second volute cavity through the second filter module, and the second filter module It is a plate filter module, and its air inlet end face is used to close the long cavity;

At least one opening or through hole is opened on the housing where the elongated cavity is located. The opening or through hole is the fresh air supply port or the indoor return air port. Or the through hole is the fresh air supply port when the fresh air is out.

Further, the cross-section at the exit of the arc-shaped air outlet passage of the first volute cavity is smaller than the cross-section of the elongated cavity; the cross-section at the exit of the arc-shaped air outlet passage of the second volute cavity smaller than the cross section of the second air outlet cavity.

Further, the second filter module includes an activated carbon plate filter module and a high-efficiency HEPA filter module, and the filter element material of the high-efficiency HEPA filter module is a high-efficiency filter element material of H11 or H12 or H13 or H14 level.

Further, the first filter module adopts a cylindrical filter module; the position of the fresh air inlet cavity is parallel to the first volute cavity.

Further, a relatively closed purification enhancement chamber is provided between the air outlet end of the second filter module and the suction inlet of the second fan.

Further, a fresh air diversion plate device is provided at the connection point between the long cavity and the second filter module. The fresh air diversion plate device is a plate-type frame structure, and the outer frame of the fresh air diversion plate device is fixed in the elongated cavity. There are arc-shaped louver deflectors arranged in multiple layers, and the arc-shaped bending direction of the arc-shaped louver deflectors is inclined toward the air outlet direction of the volute of the first fan. The deflector enters the second filter module and is sent into the room through the second fan, and part of the fresh air is sent into the next room through the return air outlet of the next room. The configuration of the fresh air deflector is: to rectify the fresh air and block the fresh air here A turbulent flow is formed to prevent the turbulent airflow from blowing off the dust on the surface of the second filter module.

Further, the opening or through hole passes through the partition or wall to communicate with another space or room; the fresh air outlet is connected to the fresh air hole through a channel or a pipe, and the fresh air hole is connected to the outdoor fresh air.

Further, the first fan and the second fan are arranged side by side in the same casing;

With the position of the first fan as the lower part, one or two surfaces of the lower part of the casing are provided with fresh air outlets;

There are air outlets on the top of the shell, or air outlets on both sides, or air outlets on the top and two sides;

The position of the second blower is the upper part, the mode conversion cavity is located at the back side of the second blower, and the housing where the mode conversion cavity is located has an air return port or a fresh air supply port.

Further, a controller is included, the controller is connected to the first and second fans, and the openings or through holes on the casing are all communicated with other spaces or rooms;

The controller includes a mode adjustment module, and the mode adjustment module includes an air purification large cycle mode module and a pure fresh air purification mode module;

The air purification large cycle mode module adopts the first and second fans as the set normal speed, and the opening or through hole is the air return port; the normal speed set in the air purification large cycle mode module, the set speed configuration is: The air volume of the second fan is greater than that of the first fan, and the second fan sucks in all the fresh air sent by the first fan and at the same time inhales the air in the next room from the return air outlet of the next room and filters it together, and then sends it out from the upper air outlet;

The pure fresh air purification mode module adjusts the second fan to a low-speed operation mode, and the first fan operates normally, and the opening or through hole is a fresh air supply port; the pure fresh air purification mode module adjusts the second fan to a low-speed operation mode, and the first fan operates normally. The first fan is running normally. At this time, the air volume of the first fan is greater than that of the second fan. The first fan sends in the purified fresh air from the outside, and the second fan sends a part of the fresh air through the air outlet. The air vents send into the next room.

An indoor air purification cycle system, characterized in that the above-mentioned dual-mode fresh air purifier is used, the indoor space includes a plurality of independent spaces or rooms divided by obstacles, and the fresh air purifier is located in one of the spaces or In the room, the openings or through holes of the fresh air purifier are multiple pipes passing through obstacles to connect to another space, blowing the purified fresh air to another space, or sucking the return air of another space into the air purifier .

The effect of the purification principle of the present invention is: the purification principle is still the effect of generating a slight positive pressure indoors, and the dirty air in the room is pressed out to the outside through the cracks in the door and windows, combined with the use of industrial high-grade filter elements, the PM2.5 It can be effectively blocked, and can also maintain an efficient and clean filtering effect. There is no need to open windows to achieve 24-hour ventilation and oxygen supplementation, reducing indoor and outdoor heat exchange; by using two fans, the fresh air and return air are filtered separately, and the new innovation is , by adjusting the position of the return air outlet and the fresh air supply outlet, adjusting the position and shape design of the channel, improving the structural characteristics of the fresh air channel and the return air channel, thereby improving the purification effect and method.

When using the dual-mode fresh air purifier of the present invention, the air can be purified in two modes by adjusting the speed of the fan. When the second fan is adjusted to operate at a low speed, it enters the pure fresh air purification mode. The opening or through hole of the housing is used as the fresh air supply port, and the whole room is purified by fresh air; when the first fan speed is adjusted to a normal value, the opening or through hole at the elongated cavity of the shell is used as the return air port, and the whole room The room enters the air purification cycle mode, which can purify the dirty air in the whole room, so as to adjust the purifier according to the needs of the family in different weather and time periods, which is more convenient and energy-saving, and the purification effect is better.

Description of drawings

Fig. 1 is the three-dimensional structure diagram of an embodiment of the dual-mode fresh air purifier of the present invention;

Fig. 2 is the fresh air circulation schematic diagram of an embodiment of the dual-mode fresh air purifier of the present invention;

Fig. 3 is a side view sectional view of an embodiment in which the housing back opening or through hole of the dual-mode fresh air purifier of the present invention is used as an air return port;

Fig. 4 is the schematic diagram of the air outlet circulation of the front of the dual-mode fresh air purifier of the present invention;

Fig. 5 is a schematic side view sectional view of an embodiment of the air purification large cycle mode of the dual-mode fresh air purifier of the present invention;

Fig. 6 is a schematic side view sectional view of an embodiment of the pure fresh air purification mode of the dual-mode fresh air purifier of the present invention;

Fig. 7 is a schematic plan view of the large circulation mode of air purification in one room and one living room of the indoor air purification circulation system of the present invention;

Fig. 8 is a schematic plan view of the pure fresh air purification mode of one room and one living room of the indoor air purification circulation system of the present invention.

detailed description

The present invention will be further described in conjunction with the accompanying drawings and specific embodiments.

As shown in the figure: 1. Air supply port; 2. Indoor purification chamber; 3. Second fan; 4. High efficiency plate filter; 5. Activated carbon purification module; 6. Fresh air chamber; 7. Cylindrical filter module; 8. New 9. Fresh air outlet; 10. First fan; 11. Mode conversion chamber; 12. 13. Opening or through hole (fresh air supply port/return air port); 14. Purification enhancement chamber; 15. Fresh air diversion plate;

The dual-mode fresh air purifier includes a fresh air filter part and a return air filter part. The fresh air filter part includes a fresh air outlet, a first fan, and a first filter module; the return air filter includes a second fan, a second filter module, and an indoor air supply port; The filter part communicates with the return air filter part through the mode conversion chamber; there is at least one opening or through hole on the shell of the mode conversion chamber to communicate with another room or space, and the opening or through hole is for two purposes. The hole is a fresh air supply port or an indoor air return port, the opening or through hole is the return air port when the opening or the through hole is used for returning air, and the fresh air supply port when the opening or the through hole is used for going out the fresh air.

In a preferred embodiment, the dual-mode fresh air purifier includes a housing, a first fan, a second fan, a first filter module, a second filter module, a fresh air outlet, a return air outlet, and an air supply outlet, and the first fan is a fresh air fan , located in the first volute cavity, the arc-shaped air outlet channel of the first volute-type cavity is connected to the elongated cavity, and the cross section of the outlet of the arc-shaped air outlet channel is smaller than the cross section of the elongated cavity The suction port of the first fan is connected to the first filter module, the first filter module is connected to the fresh air inlet chamber, and the fresh air inlet chamber is connected to the fresh air outlet; the second fan is a return air fan, which is arranged in the second volute cavity, and The arc-shaped air outlet passage of the two volute-type chambers communicates with the air outlet on the housing through the second air outlet chamber, and the cross-section at the outlet of the arc-shaped air outlet passage is smaller than the cross-section of the second air outlet chamber; The volute cavity, the second filter module, and the long cavity are arranged side by side; the long cavity and the suction port of the second volute cavity are connected through the second filter module, and the second filter module is a plate type The air inlet end face of the filter module is used to close the elongated cavity; the housing where the elongated cavity is located is provided with multiple openings or through holes, the openings or through holes are the fresh air supply port or the indoor return air port Or when the through hole is used for air return, it is the indoor return air outlet, and when the opening or the through hole is used for fresh air, it is the fresh air supply outlet. The first fan and the second fan are arranged side by side in the same housing; with the position of the first fan as the lower part, one or two surfaces of the lower part of the housing are provided with fresh air outlets; the top of the housing is provided with air supply outlets, or two There are air supply ports on the side, or air supply ports on the top and two sides; the position of the second fan is the upper part, the elongated cavity is located on the back side of the second fan, and the shell where the elongated cavity is located has an air return port or Fresh air outlet.

The second filter module includes an activated carbon plate filter module and a high-efficiency HEPA filter module, and the filter element material of the high-efficiency HEPA filter module adopts high-efficiency filter element materials above H11, H12, H13 or H14. The first filter module adopts a cylindrical filter module, and the first filter module includes a primary and medium-efficiency filter element and a high-efficiency HEPA filter element; the high-efficiency HEPA filter element in the first filter module adopts high-efficiency filter element materials above H13 and H14 levels.

The position of the fresh air inlet cavity is parallel to the first volute cavity.

In a preferred embodiment, a fresh air diversion plate device is provided at the place where the elongated cavity communicates with the second filter module. The diversion plate device is provided with arc-shaped louver deflectors arranged in multiple layers. One end of the arc-shaped louver deflector is fixed and the other end is an open end. When the fresh air guide plate guides the fresh air, it can keep the fresh air output in the same flow direction, and prevent the fresh air from blowing off the pollutants on the surface of the high-efficiency filter element

One or more openings or through holes may be provided on the housing at the back of the elongated cavity.

In one embodiment, one or two or more openings or through holes are air return ports in the chamber.

In another embodiment, one or two or more openings or through holes are fresh air outlets in the chamber.

In a preferred embodiment, the fresh air outlet is connected to the fresh air hole through channels or pipes, and the fresh air hole is connected to outdoor fresh air.

In a preferred embodiment, the first fan and the second fan are arranged side by side in the same casing;

The dual-mode fresh air purifier of the present invention includes at least two purification modes, and its specific structure is: the dual-mode fresh air purifier is provided with a controller, the controller is connected to the first and second fans, and the opening or The through holes are all connected with other spaces or rooms; the controller includes a mode adjustment module, and the mode adjustment module includes an air purification large cycle mode module and a pure fresh air purification mode module; the air purification large cycle mode module uses the first and second fans as normal The opening or through hole is the air return port; the pure fresh air purification mode module adjusts the second fan to a low speed operation mode and the first fan is running normally, and the opening or through hole is the fresh air supply port. The controller includes a mode adjustment module, and the mode adjustment module includes an air purification large circulation mode module and a pure fresh air purification mode module.

The air purification large cycle mode module controls the first and second fans to set normal speed. The set speed makes the air volume of the second fan larger than that of the first fan. The second fan sucks all the fresh air sent by the first fan. The air sucked in from the air return port of the next room is filtered together and sent out from the air supply port above, and the opening or through hole is the return air port;

The pure fresh air purification mode module adjusts the second fan to a low-speed operation mode, and the first fan operates normally. At this time, the air volume of the first fan is greater than that of the second fan. A part of the fresh air is sent out through the air supply port, and the excess fresh air is sent into the next room through the return air port of the next room, and the opening or through hole is the fresh air supply port.

In one embodiment, multiple fresh air outlets can be provided, which are respectively opened on the two sides of the lower part of the casing, and one of them can be selectively used according to needs during use. The air supply port can be provided with multiple, can be provided on multiple sides and tops, and can be provided as required during use, and can be provided around the centrifugal fan. In one embodiment, the air outlets may be multiple rows of evenly distributed grids.

In one embodiment, the outer wall of the cylindrical filter module of the first filter module is the air inlet end, the inner cavity of the cylindrical structure is the air outlet end, one axial end of the inner cavity is closed, and the other end communicates with the first filter module. The air inlet end of the fan; the cylindrical filter module is a detachable module, and the housing adopts a split structure. The front door panel is removed, and the cylindrical filter module is taken out for replacement. For the first filter module, the primary and medium-efficiency filter modules and high-efficiency filter modules are installed in sequence in the direction that air is sucked in from the outside to the inside. The assembly of the second filter module adopts a plate structure, the plate structure is provided with a frame, and the plate structure is plugged into the housing. The filter module can be plugged in a variety of combinations, such as removing formaldehyde or benzene or removing TVOC or removing Bacteria module, etc., and the second filter module, the high-efficiency filter module and the activated carbon filter module are installed in sequence in the direction that the air is sucked in from the outside to the inside.

In a preferred embodiment, the first and second fans are speed-regulating fans, and the fresh air purifier is provided with a temperature detection probe, a PM2.5 detector, and a controller, wherein the temperature detection probe is used for real-time detection of fresh air and indoor Temperature and PM2.5 detectors are used to detect indoor air quality in real time. Both the temperature detection probe and the PM2.5 detector are connected to the controller, and the controller automatically adjusts the speed of the first and second fans according to the received data information or prompts for manual adjustment. The rotation speed of the first and second fans is used to adjust the intake ratio of fresh air and return air. When the air quality is poor, when the indoor and outdoor temperature difference is large, the proportion of fresh air intake can be automatically reduced, and on the contrary, the proportion of fresh air intake can be automatically increased. Compared with the adjustment of the air valve, the advantage of this adjustment method is that there is no problem of increasing wind resistance, but through the adjustment of the fan speed, energy saving can effectively avoid the increase or decrease of the indoor temperature.

An indoor air purification cycle system, using the above-mentioned dual-mode fresh air purifier, the indoor space includes a plurality of independent spaces or rooms divided by obstacles, the fresh air purifier is located in one of the spaces or rooms, and the fresh air purifier The openings or through-holes of the machine are multiple pipes passing through obstacles to connect to another space, blowing the purified fresh air to another space, or sucking the return air of another space into the air purifier.

In a specific embodiment, only one fresh air purifier can be used in the family, and its fresh air supply port can be blown to the space through the top air supply port, or can be blown to another space through the wall, or can be blown to several space.

In summary, the present invention provides a dual-mode fresh air purifier and an indoor air purification circulation system. The fresh air and return air fans are respectively arranged in the volute cavity, and the return air fan, filter and the long type of fresh air outlet cavity The cavities are arranged side by side; the long cavity and the plate filter module are provided with multiple openings or through holes on the back shell of the long cavity. When the through hole is used for fresh air, it is a fresh air supply port. The structure of the present invention can obtain two operation modes, the first is the air purification large circulation mode, and the second is the pure fresh air purification mode; in the air purification large circulation mode, the two fans are at normal speed, and the opening or through hole is connected by the return air port Another room; in the pure fresh air purification mode, the second fan is in a low-speed operation mode, and the opening or through hole is a fresh air supply port to deliver fresh air to another room. The present invention optimizes the purification mode by adding fresh air supply outlets, changing the return air outlet and the structure of the air duct, which can reduce costs and noise, and solve the current problems that haze weather seriously plagues people's livelihood.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present case and not to limit them; although the present case has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: the present case can still be Modifications to the specific implementation methods or equivalent replacement of some technical features; without departing from the spirit of the technical solution, all of them should be covered by the scope of the technical solution claimed in this case.

Claims (14)

1. A dual-mode fresh air purifier, characterized in that, It includes a fresh air filter part and a return air filter part. The fresh air filter part includes a fresh air outlet, a first fan, and a first filter module; the return air filter part includes a second fan, a second filter module, and an indoor air supply port; The fresh air filter part and the return air filter part communicate through the mode conversion chamber; There is at least one opening or through hole on the shell of the mode conversion chamber to communicate with another room or space. The opening or through hole is used for two purposes. When used for return air, it is the air return port, and when the opening or through hole is used for fresh air outlet, it is the fresh air supply port. 2. The dual-mode fresh air purifier according to claim 1, comprising the following passages: The mode conversion cavity is connected in parallel with two fresh air outlet channels: the first channel, fresh air enters the return air filter part, and then enters the room through the air supply port to supply fresh air, and the second channel enters another room or space through the fresh air exhaust port to supply fresh air; Return air channel: The return air from another room is discharged through the mode conversion chamber and the return air filter through the indoor air supply port. 3. The dual-mode fresh air purifier according to claim 1, wherein the first fan and the second fan are adjustable air volume fans, and the different modes of the fresh air purifier are realized by matching the air volume of the two fans. When the air volume of the fan is smaller than that of the second fan, the opening or through hole connected to another room is the indoor return air outlet; when the air volume of the first fan is greater than that of the second fan, the opening or through hole connected to another room is the fresh air Outlet. 4. The dual-mode fresh air purifier according to claim 1, characterized in that it comprises a controller, and the controller is connected to the first blower fan and the second blower fan; the controller controls the respective rotating speeds of the two blower blowers to realize the respective speeds of the two blower fans Adjustment of output air volume. 5. dual-mode fresh air purifier according to claim 1, is characterized in that, The first fan is arranged in the first volute cavity, the arc-shaped air outlet channel of the first volute cavity is connected to the mode conversion cavity, and the mode conversion cavity is a long cavity; The suction port of the first fan is connected to the first filter module, the first filter module is connected to the fresh air inlet chamber, and the fresh air inlet chamber is connected to the fresh air outlet; The second fan is arranged in the second volute-type cavity, and the arc-shaped air outlet channel of the second volute-type cavity communicates with the air supply port on the casing through the second air outlet cavity; The second volute cavity, the second filter module, and the long cavity are arranged side by side; the long cavity communicates with the suction port of the second volute cavity through the second filter module, and the second filter module It is a plate filter module, and its air inlet end face is used to close the long cavity; At least one opening or through hole is opened on the housing where the elongated cavity is located. The opening or through hole is the fresh air supply port or the indoor return air port. Or the through hole is the fresh air supply port when the fresh air is out. 6. The dual-mode fresh air purifier according to claim 5, wherein the cross-section at the outlet of the arc-shaped air outlet passage of the first volute cavity is smaller than the cross-section of the elongated cavity; the second volute The cross section at the outlet of the arc-shaped air outlet channel of the shell cavity is smaller than the cross section of the second air outlet chamber. 7. The dual-mode fresh air purifier according to claim 5 or 6, wherein the second filter module includes an activated carbon plate filter module and a high-efficiency HEPA filter module, and the filter core material of the high-efficiency HEPA filter module adopts H11 or H12 or H13 or H14 grade or above high-efficiency filter material. 8. The dual-mode fresh air purifier according to claim 5, wherein the first filter module is a cylindrical filter module; the position of the fresh air inlet cavity is parallel to the first volute cavity. 9. A dual-mode fresh air purifier according to any one of claims 5 to 8, characterized in that a relatively closed purification enhancement cavity is provided between the air outlet end of the second filter module and the suction port of the second fan . 10. A dual-mode fresh air purifier according to any one of claims 5 to 9, characterized in that a fresh air diversion plate device is provided at the place where the elongated cavity communicates with the second filter module, and the fresh air diversion plate device is a plate type Frame structure, the outer frame of the fresh air deflector device is fixed in the long cavity, the fresh air deflector device is equipped with arc-shaped louver deflectors arranged in multiple layers, and the arc-shaped bending direction of the arc-shaped louver deflectors is toward the first fan. The air outlet direction of the volute is inclined, and the inclination direction is set as follows: in the pure fresh air mode, part of the fresh air enters the second filter module through the deflector, is sent into the room through the second fan, and part of the fresh air is sent into the next door through the return air outlet of the next room In the room, the fresh air deflector is configured to rectify the fresh air, prevent the fresh air from forming a turbulent flow here, and prevent the turbulent air flow from blowing off the dust on the surface of the second filter module. 11. A dual-mode fresh air purifier according to any one of claims 1 to 5, wherein the opening or through hole passes through a partition or wall to communicate with another space or room; the fresh air outlet passes through a channel or a pipe Connect to the fresh air hole, and the fresh air hole is connected to the outdoor fresh air. 12. A dual-mode fresh air purifier according to any one of claims 5 to 7, characterized in that, The first fan and the second fan are arranged side by side in the same casing; With the position of the first fan as the lower part, one or two surfaces of the lower part of the casing are provided with fresh air outlets; There are air outlets on the top of the shell, or air outlets on both sides, or air outlets on the top and two sides; The position of the second blower is the upper part, the mode conversion cavity is located at the back side of the second blower, and the housing where the mode conversion cavity is located has an air return port or a fresh air supply port. 13. The dual-mode fresh air purifier according to any one of claims 1 to 12, characterized in that, A controller is included, the controller is connected to the first fan and the second fan, and the openings or through holes on the housing communicate with other spaces or rooms; The controller includes a mode adjustment module, and the mode adjustment module includes an air purification large cycle mode module and a pure fresh air purification mode module; The air purification large cycle mode module adopts the first and second fans as the set normal speed, and the opening or through hole is the air return port; the normal speed set in the air purification large cycle mode module, the set speed configuration is: The air volume of the second fan is greater than that of the first fan, and the second fan sucks in all the fresh air sent by the first fan and at the same time inhales the air in the next room from the return air outlet of the next room and filters it together, and then sends it out from the upper air outlet; The pure fresh air purification mode module adjusts the second fan to a low-speed operation mode, and the first fan operates normally, and the opening or through hole is a fresh air supply port; the pure fresh air purification mode module adjusts the second fan to a low-speed operation mode, and the first fan operates normally. The first fan is running normally. At this time, the air volume of the first fan is greater than that of the second fan. The first fan sends in the purified fresh air from the outside, and the second fan sends a part of the fresh air through the air outlet. The air vents send into the next room. 14. An indoor air purification circulation system, characterized in that, using a dual-mode fresh air purifier according to any one of claims 1 to 13, the indoor space includes a plurality of independent spaces or rooms divided by obstacles, The fresh air purifier is located in one of the spaces or rooms, and the openings or through holes of the fresh air purifier are multiple pipes passing through obstacles to connect to another space, blowing the purified fresh air to another space, or The return air from another space is sucked into the air purifier.