CN216953363U

CN216953363U - Novel fresh air purifying device with air conditioning and humidifying functions

Info

Publication number: CN216953363U
Application number: CN202220051353.4U
Authority: CN
Inventors: 张坤; 张永斌; 李奎伟
Original assignee: Xindi Energy Engineering Technology Co Ltd
Current assignee: Xindi Energy Engineering Technology Co Ltd
Priority date: 2022-01-10
Filing date: 2022-01-10
Publication date: 2022-07-12
Anticipated expiration: 2032-01-10

Abstract

The utility model discloses a novel fresh air purifying device with air conditioning and humidifying functions, which comprises a bidirectional flow air interchanger, a sponge, a water tank, a submersible pump and a water spraying device, wherein the sponge and the water spraying device are both encapsulated in a sealed cavity, an outdoor fresh air inlet of the bidirectional flow air interchanger is connected with a fresh air pipe, an air inlet of the fresh air pipe is located outdoors, an outdoor fresh air outlet of the bidirectional flow air interchanger is connected with the fresh air inlet of the sealed cavity through a first air inlet pipe, the fresh air outlet of the sealed cavity is connected with a second air inlet pipe, an air outlet of the second air inlet pipe is connected with an evaporator, and a fresh air output pipeline of the evaporator extends indoors. The bidirectional flow air interchanger filters fresh air through the compact porous sponge, water in the water tank is sprayed onto the sponge through the submersible pump, and the fresh air entering the room not only filters dust but also humidifies air.

Description

Novel fresh air purifying device with air conditioning and humidifying functions

Technical Field

The utility model belongs to the field of air conditioning systems, and particularly relates to a device capable of collecting outdoor fresh air and humidifying and purifying indoor air.

Background

The air purification problem is a focus of public attention in the haze weather of one wave and another wave, and most of the air supply purification of the central air conditioner in the market adopts the principle of a pure physical absorption method, namely a blower and a different filter screen. Air is drawn in by a fan and then filtered through different screens for viruses, suspended particles, dust, animal hair, etc. The filter screens are roughly classified into three types, namely a deodorizing filter screen (activated carbon), a formaldehyde removing filter screen and a HEPA filter screen. The effective rate of the HEPA filter screen on fine particles of 0.1 to 0.3 microns is as high as 99.97 percent, the HEPA filter screen is disposable and cannot be washed, the service life is completely determined by the local air quality, and the HEPA filter screen is expensive and has high frequent replacement cost. Notably, such purifiers are capable of filtering particles from 0.12 to 0.3 microns, but are not effective against some bacteria and all viruses.

Another air purification principle is that ozone is released to achieve sterilization before work and then the ozone is filtered layer by a filter screen. Ozone at low concentrations can be disinfected, but ozone that is overproof is an invisible killer. It can stimulate human respiratory tract, cause swelling and pain in throat, chest distress and cough, cause bronchitis and emphysema, and even seriously destroy human immune function, so that pregnant women are teratogenic. And a plurality of phenomena that the air purification ozone exceeds the standard are very common in the current market.

The deodorizing filter screens, the formaldehyde removing filter screens and the HEPA filter screens are all consumables, namely, as the service life increases, the efficiency of the filter screens is lower and lower, the filter screens are finally scrapped, users have to pay a large amount of cost to replace the expensive filter screens, and in order to reduce the use cost of the users, the manufacturers generally cannot introduce fresh air when using the air purifier, and only allow the users to recycle the air indoors.

Besides the air cleanliness problem, the magnitude of air humidity is closely related to human health. With the increasing demand for comfort and the stringent demands of modern industry on production environment, humidification has become an indispensable part of most air conditioning systems. However, due to the wide variety of humidification technologies, improper selection of humidification methods will result in poor humidification effect, and generally, the suitable health humidity of human body is 50% RH-65% RH. The heating device evaporates water in a narrow indoor space in a short time, so that people are in a dry indoor air environment for a long time. Dry air has a certain hazard. First, it is susceptible to the spread of bacteria. The dry air is the main reason for the increase of dust and suspended particulate matter, and the bacteria can not exist independently and are often attached to the dust. The body resistance of the old and the children is weak, and the old and the children are easy to be invaded by bacteria and viruses, and the warm and dry are the best environment for breeding and spreading many viruses and bacteria. Secondly, excessive loss of body water, infection and disease and aging acceleration are easily caused. In a dry environment, people feel dry mouth and tongue, tight muscles and low mood every morning when getting up. Especially for women, the muscle fibers of the skin are composed of a large amount of water-soluble collagen, and the drying makes the muscle fibers shrink due to rapid dehydration, and the muscle fibers may break over time, and the skin may have unrecoverable wrinkles and take on an old state.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects and provide the household air purification and humidification device which has simple structure, reliable work, capability of directly introducing fresh air and low operation cost. Water is the best choice for dealing with dust, harmful substances in the air including: dust, mites, pollen, suspended particles, formaldehyde and the like, which can be adsorbed and simultaneously locked by the force of water, run for 24 hours to allow us to enjoy a water-washed air, and the air cleanliness reaches up to 99.997% without any filter screen.

The utility model relates to a novel fresh air purifying device with air conditioning and humidifying functions, which comprises a bidirectional flow air interchanger, a sponge, a water storage tank, a submersible pump and an air conditioning system, wherein the bidirectional flow air interchanger is used for discharging indoor air or inputting outdoor air into a room, the sponge is used for storing water and removing harmful substances in the outdoor air, the water storage tank is used for conveying water in the water storage tank to the sponge, the submersible pump is connected with a water spraying device used for spraying water into the sponge through a water conveying pipe, the sponge and the water spraying device are both enclosed in a closed cavity, an outdoor fresh air inlet of the bidirectional flow air interchanger is connected with a fresh air pipe, an outdoor fresh air outlet of the bidirectional flow air interchanger is connected with a fresh air inlet of the closed cavity of the sponge through a first air inlet pipe, a fresh air outlet of the closed cavity is connected with a fresh air inlet of an evaporator of the air conditioning system through a second air inlet pipe, and a fresh air output pipeline of the evaporator extends into the room.

Further, the water spraying device is arranged above the sponge (with the downward nozzle), on any side or two sides or below the sponge (with the upward nozzle), preferably above the sponge, and is preferably a plurality of water spraying devices uniformly distributed above the sponge.

Furthermore, a water retaining device for blocking fresh air mist is arranged on a fresh air output pipeline of the evaporator, the fresh air output pipeline of the evaporator is connected with an indoor air outlet after passing through the water retaining device, the water retaining device comprises a fixed frame body, a plurality of water retaining plate blades and a plurality of fasteners, the water retaining plate blades are divided into a first water retaining plate blade group and a second water retaining plate blade group, the first water retaining plate blade group and the second water retaining plate blade group are linearly arranged, gaps exist between the water retaining plate blade group and the upper portion and/or the lower portion and/or the left side and/or the right side of the fixed frame body, and the water retaining plate blades are preferably arranged in a staggered mode, and the bending directions of the water retaining plate blades of the blade groups are opposite (for example, two groups of wave-shaped blade groups are arranged in a staggered mode, and two groups of wave crests and wave troughs are arranged in a staggered mode); for example, the outer part of the fixed frame body is provided with a plurality of semi-cylinders, and the fasteners penetrate through the semi-cylinders and extend into the water baffle blades to fix the water baffle blades.

Preferably, the water retaining device is a cavity with a water retaining plate inside, the water retaining device is of a sealing structure, an air inlet of the water retaining device is opposite to the middle of one side of the first water retaining plate blade group and enters the water retaining device along the transverse direction of the water retaining plate blade group, an air outlet of the water retaining device is located in the middle or the upper of one side of the second water retaining plate blade group, the water retaining device can be square, condensed water on the water retaining device is discharged through a condensed water pipe, and a sealing valve is arranged on the condensed water pipe.

Furthermore, a water level controller is fixed on the upper part of the water tank and is provided with a water replenishing port, the water replenishing port is connected with a water replenishing pipe, an electromagnetic valve is arranged on the water replenishing pipe, the electromagnetic valve receives an electric signal sent by the water level controller to open or close, and when the water level in the water tank is lower than the water level controller, the water level controller sends a signal to the electromagnetic valve on the water replenishing pipe to open the electromagnetic valve so as to replenish a part of water for the interior of the water tank; the bottom of the water tank is provided with a water changing port which is connected with a water changing pipe, the water changing port positioned at the bottom of the water tank can be manually opened, water in the water tank is drained, and the water in the water tank is completely changed into clean water for use.

Furthermore, the bidirectional flow air interchanger is a total heat exchanger and provides power for air circulation flow, and the bidirectional flow air interchanger is provided with an indoor air inlet for sucking indoor exhaust air and an indoor air outlet for discharging the indoor exhaust air to the outside.

Furthermore, the top of the sealed cavity of the sponge is provided with a hole for the penetration of a water delivery pipe, the water delivery pipe and the sealed cavity are subjected to joint filling treatment, the joint filling agent well known in the field is used for treatment, the overflow of fresh air is prevented, for example, a fresh air inlet and a fresh air outlet of the sealed cavity are arranged on two sides of the sealed cavity, for example, the fresh air inlet and the fresh air outlet can be flange interfaces, an inclined water collecting disc for collecting water is arranged at the bottom end inside the sealed cavity, a flange interface which is connected with a drain pipe in a sealing manner is arranged at the joint of the bottommost end of the water collecting disc and the sealed cavity, and a sealing valve is arranged on the drain pipe.

Further, the sponge is a compact porous sponge, the weight of the sponge is generally 1-10kg and the volume is generally 0.05-0.5m³The sponge with medium density purification is made of polyurethane, the sponge can be a sponge plate with the shape consistent with that of an external closed cavity, water filled in a water tank in the closed cavity of the sponge plate is connected to a water spray device above the sponge through a water pipe, wind passes through the sponge plate, and the water in the sponge plate adsorbs harmful substances in the air. The water adsorbing dust in the sponge is periodically replaced or cleaned, and when the sponge is cleaned, the sealing valve on the drain pipe is opened, the submersible pump is opened, and the water spraying device sprays water to the sponge to clean the sponge.

Further, the air conditioning system is a conventional system well known to those skilled in the art, and includes a closed loop formed by connecting pipes, an evaporator, a compressor, a condenser and a throttling component are sequentially arranged on the closed loop in a clockwise direction, the throttling component may be an expansion valve or a capillary tube, for example, an air outlet of the second air inlet pipe is connected with a fresh air inlet of the evaporator, and the refrigerant flows through a tube side of the evaporator and fresh air flows through a shell side of the evaporator, for example. The working principle of the air conditioning system is that a compressor sucks in low-pressure gaseous refrigerant output from an evaporator, the low-pressure gaseous refrigerant is compressed into high-temperature high-pressure gaseous refrigerant, then the high-temperature high-pressure gaseous refrigerant is conveyed into a condenser, refrigerant vapor is cooled in the condenser to become high-pressure liquid refrigerant, the high-pressure liquid refrigerant is throttled and depressurized by a throttling component (such as a capillary tube) and then conveyed into the evaporator, meanwhile, fresh air in a second air inlet pipe enters the evaporator, the low-pressure liquid refrigerant in the evaporator is changed into gaseous refrigerant due to the fact that the low-pressure liquid refrigerant absorbs heat of the fresh air, the fresh air is cooled, the cooled fresh air is delivered into a room after water mist is removed by a water retaining device, the low-pressure gaseous refrigerant passing through the evaporator is sucked into the compressor again and is compressed into the high-pressure gaseous refrigerant again for circulation.

Furthermore, the air inlet of the fresh air pipe is located outdoors, the air inlet of the fresh air pipe is connected with a fresh air filter screen for preliminarily filtering outdoor fresh air, and the fresh air filter screen is used for preventing large-particle foreign matters or small animals from entering the fresh air pipe.

Furthermore, rain-proof shutters are arranged on the outer side of the fresh air filter screen.

The utility model has the beneficial effects that:

the utility model relates to a novel fresh air purifying device with air conditioning and humidifying functions, which firstly overcomes the defects of the prior art, and completely uses water to replace the traditional deodorizing filter screen, formaldehyde removing filter screen, HEPA filter screen or ozone to filter the air supply of a central air conditioner. The water is used for removing harmful substances such as virus, suspended particles, dust, animal hair and the like in the air, and the filtering system has low operation cost, safety and reliability. And the filtered air is washed by water, so that the discharged purified air has certain humidity and also plays a role in humidifying the air.

Drawings

Fig. 1 is a schematic structural view of a novel fresh air purifying device with air conditioning and humidifying functions.

The air conditioner comprises a fresh air filter screen 1, a bidirectional flow air interchanger 2, a fresh air pipe 3, a first air inlet pipe 4, a water tank 5, a sponge 6, a submersible pump 7, a water retaining device 8, an air outlet 9, a water level controller 10, an evaporator 11, a throttling component 12, a water replenishing port 13, a water interchanging port 14, an air conditioning system 15, a second air inlet pipe 16, a water delivery pipe 17, a water spray device 18, an indoor air inlet 19, an indoor air outlet 20, a rainproof shutter 21, a rainproof shutter 22, a compressor 23, a condenser 24, a fresh air output pipeline 24, a sponge closed cavity 25, a water accumulating disc 26 and a water discharge pipe 27.

Detailed Description

The utility model is further described below with reference to the accompanying drawings.

As shown in figure 1, the novel fresh air purifying device with air conditioning and humidifying functions comprises a bidirectional flow air interchanger 2 used for discharging indoor air out of a room or inputting outdoor air into the room, a sponge 6 used for storing water and removing harmful substances in the outdoor air, a water tank 5 for storing water, a submersible pump 7 for conveying water in the water tank 5 to the sponge 6 and an air conditioning system 15, wherein the submersible pump 7 is connected with a water spraying device 18 used for spraying water into the sponge through a water conveying pipe 17, the sponge 6 and the water spraying device 18 are both enclosed in a closed cavity 25, an outdoor fresh air inlet of the bidirectional flow air interchanger 2 is connected with a fresh air pipe 3, an outdoor fresh air outlet of the bidirectional flow air interchanger 2 is connected with a fresh air inlet of the closed cavity 25 of the sponge 6 through a first air inlet pipe 4, a fresh air outlet of the closed cavity 25 is connected with a fresh air inlet of an evaporator 11 of the air conditioning system 15 through a second air inlet pipe 16, the fresh air output pipe 24 of the evaporator 11 extends to the indoor.

The water spray device 18 may be disposed above the sponge 6. The fresh air output pipeline 24 of the evaporator 11 is provided with a water retaining device 8 for blocking fresh air water mist, the water retaining device 8 is an enclosed cavity with a water retaining plate inside, the fresh air output pipeline of the evaporator is connected with the air outlet 9 after passing through the water retaining device, the water retaining device comprises a fixed frame body, a plurality of water retaining plate blades and a plurality of fasteners, the water retaining plate blades are divided into a first water retaining plate blade group and a second water retaining plate blade group, the first water retaining plate blade group and the second water retaining plate blade group are linearly arranged, gaps exist between the water retaining plate blades and the upper part and/or the lower part and/or the left side and/or the right side of the fixed frame body, the first water baffle blade group and the second water baffle blade group are fixed on the fixed frame body through fasteners, preferably, the water baffle blades of the blade groups are arranged in a staggered mode, and the bending directions are opposite (for example, two groups of wavy blades are arranged, and wave crests and wave troughs of the two groups are arranged in a staggered mode); for example, the outer part of the fixed frame body is provided with a plurality of semi-cylinders, and the fasteners penetrate through the semi-cylinders and extend into the water baffle blades to fix the water baffle blades. In one embodiment, the water retaining device is a cavity with a water retaining plate inside, the water retaining device is of a sealing type structure, an air inlet of the water retaining device is opposite to the middle of one side of the first water retaining plate blade group and enters the water retaining device along the transverse direction of the water retaining plate blade group, an air outlet of the water retaining device is located in the middle or the upper of one side of the second water retaining plate blade group, the water retaining device can be square for example, condensed water on the water retaining device is discharged through a condensed water pipe, and a sealing valve is arranged on the condensed water pipe.

The upper part of the water tank 5 is fixed with a water level controller 10 and is provided with a water replenishing port 13, the water replenishing port 13 is connected with a water replenishing pipe, the water replenishing pipe is provided with an electromagnetic valve, the electromagnetic valve receives an electric signal sent by the water level controller 10 to be opened or closed, and when the water level in the water tank is lower than the water level controller 10, the water level controller 10 sends a signal to the electromagnetic valve on the water replenishing pipe to open the electromagnetic valve so as to replenish a part of water in the water tank 5.

The bottom of the water tank 5 is provided with a water changing port 14, the water changing port 14 is connected with a water changing pipe, the water changing port 14 positioned at the bottom of the water tank 5 can be manually opened, the water in the water tank 5 is drained, and the water in the water tank is completely cleaned.

The two-way air interchanger 2 is a total heat exchanger and provides power for air circulation flow, and is provided with an indoor air inlet 19 for sucking indoor exhaust air and an indoor air outlet 20 for discharging the indoor exhaust air to the outside.

The water spraying device 18 is a plurality of (for example, 2 to 50) spraying water sprayers uniformly distributed above the sponge.

The top of the closed cavity 25 of the sponge 6 is provided with a hole for the water delivery pipe 17 to penetrate through, the water delivery pipe 17 and the closed cavity 25 are subjected to joint filling treatment, the joint filling treatment is performed by using a joint filling agent known in the field, and therefore fresh air is prevented from overflowing, a fresh air inlet and a fresh air outlet of the closed cavity 25 are arranged on two sides of the closed cavity, for example, flange interfaces are provided, an inclined water accumulation disc 26 for receiving water is arranged at the bottom end inside the closed cavity 25, a flange interface connected with the drain pipe 27 in a sealing manner is arranged at the joint of the bottommost end of the water accumulation disc 26 and the closed cavity 25, and a sealing valve is arranged on the drain pipe 27.

The sponge 6 is a compact porous sponge, the weight of the sponge 6 is generally 1-10kg and the volume is generally 0.05-0.5m³The sponge 6 may be, for example, a sponge plate having a shape identical to that of the external sealed cavity 25, such as a square sponge plate, the sponge plate is filled in the sealed cavity, the water pipe 17 is connected to a water spray device above the sponge, wind passes through the sponge plate, and water in the sponge plate adsorbs harmful substances in the air. The water adsorbing dust in the sponge 6 is replaced or cleaned regularly, and when the sponge is cleaned, the sealing valve on the drain pipe 27 is opened, the submersible pump 7 is opened, and the water spraying device 18 sprays water to the sponge to clean the sponge.

The air conditioning system 15 is a conventional system known to those skilled in the art, and includes a closed loop formed by connecting pipes, an evaporator 11, a compressor 22, a condenser 23, and a throttling component 12 are sequentially disposed on the closed loop in a clockwise direction, the throttling component 12 may be, for example, an expansion valve or a capillary tube, an air outlet of a second air inlet pipe 16 is connected to a fresh air inlet of the evaporator 11, refrigerant, for example, travels a tube side of the evaporator 12 and fresh air travels a shell side of the evaporator 12, the air conditioning system 15 operates in a manner that the compressor 22 sucks in low-pressure gaseous refrigerant output from the evaporator 11, compresses the low-pressure gaseous refrigerant into high-temperature high-pressure gaseous refrigerant, and then conveys the high-temperature high-pressure gaseous refrigerant into the condenser 23, refrigerant vapor is cooled in the condenser 23 to become high-pressure liquid refrigerant, and then is throttled and depressurized by the throttling component 12 (for example, a capillary tube) and then conveyed into the evaporator 11, while fresh air of the second air inlet pipe 16 enters the evaporator 11, the low-pressure liquid refrigerant in the evaporator 11 changes into a gaseous refrigerant due to the absorption of the heat of the fresh air, so that the fresh air is cooled, the cooled fresh air is delivered into a room after water mist is removed by the water retaining device, the low-pressure gaseous refrigerant passing through the evaporator 11 is sucked into the compressor 22 again, and is compressed into the high-pressure gaseous refrigerant again for circulation.

In a preferred embodiment, the air inlet of the fresh air pipe 3 is located outdoors, the air inlet of the fresh air pipe 3 is connected with a fresh air filter screen 1 for primarily filtering fresh air outside the room, and the fresh air filter screen 1 is used for preventing large-particle foreign matters or small animals from entering the fresh air pipe.

The outer side of the fresh air filter screen 1 can be provided with a rainproof louver 21.

The novel fresh air purifying device with the air conditioning and humidifying functions has the working process as follows:

referring to the attached drawing 1, the main body of the air purifier (including the two-way air interchanger 2, the sponge 6 and the closed cavity 25, the water tank 5) is installed in the air conditioning unit, the air inlet of the fresh air pipe 3 leads to the outdoors, in order to prevent large-particle foreign matters or small animals from entering the purifying device of the utility model, a fresh air filter screen 1 is additionally installed, the air outlet of the fresh air pipe 3 is connected with the two-way air interchanger 2, the two-way air interchanger 2 provides the air flow power of the whole purifying device, the air flows to the tight porous sponge 6 directly through the first air inlet pipe 4, a part of common water is installed in the water tank 5, and the submersible pump 7 is arranged at the bottom of the water tank 5 to lift and spray the water to the tight porous sponge 6. Thus, outdoor air is sucked into the purification device by the bidirectional flow ventilation device 2, passes through the first air inlet pipe 4, comes out from the compact porous sponge 6 to the evaporator 11 for cooling, and enters the room after water mist is removed by the water retaining device.

The plurality of pores on the compact porous sponge 6 force the air to be uniformly washed and filtered from the whole compact porous sponge 6, and because the water blocking device 8 partially blocks the water mist and finally sends the water mist into the room, the air is more comfortable to be inhaled by people.

Because of the above working principle, the water in the water tank 5 will decrease with the increase of the using time, when the water level in the water tank 5 is lower than the water level controller 10, the water level controller 10 will send a signal to the electromagnetic valve on the water replenishing pipe to open, so as to replenish a part of the water in the water tank 5, so as to maintain the continuous use of the purification apparatus. Of course, the user can manually open the water changing port 14 at the bottom of the water tank to drain the water in the water tank 5 after using the sponge for a period of time, such as about one month, and change the water into completely clean water for use, so that the sponge is not required to be frequently changed.

In summary, the air purification device integrates the functions of air purification and humidification, and if disinfectant is added into the water tank 5 in the using process, part of bacteria in the air can be killed. If the air freshener is added, the indoor air can be filled with fragrance, the filter screen does not need to be frequently replaced, the use cost is very low, and the user can introduce fresh air and purify the fresh air without worrying about the indication of subsequent expensive consumables due to the low use cost.

Claims

1. A novel fresh air purifying device with air conditioning and humidifying functions is characterized by comprising a bidirectional flow air interchanger (2) for discharging indoor air out of a room or inputting outdoor air into the room, a sponge (6) for storing water and removing harmful substances in the outdoor air, a water tank (5) for storing water, a submersible pump (7) for conveying the water in the water tank (5) to the sponge (6) and an air conditioning system (15), wherein the submersible pump (7) is connected with a water spraying device (18) for spraying the water into the sponge through a water conveying pipe (17), the sponge (6) and the water spraying device (18) are both encapsulated in a closed cavity (25), an outdoor fresh air inlet of the bidirectional flow air interchanger (2) is connected with a fresh air pipe (3), an outdoor fresh air outlet of the bidirectional flow air interchanger (2) is connected with a fresh air inlet of the closed cavity (25) of the sponge (6) through a first air inlet pipe (4), the fresh air outlet of the closed cavity (25) is connected with the fresh air inlet of the evaporator (11) of the air conditioning system (15) through the second air inlet pipe (16), and the fresh air output pipeline (24) of the evaporator (11) extends to the indoor.

2. New purified air device according to claim 1, characterized in that the water spraying means (18) are a plurality of water sprays evenly distributed over the sponge (6) and/or

A fresh air output pipeline (24) of the evaporator (11) is provided with a water retaining device (8) for blocking fresh air water mist, and the water retaining device is an enclosed cavity with a water retaining plate inside.

3. The new fresh air purifying device according to claim 1, wherein the water level controller (10) is fixed on the upper portion of the water tank (5) and the water replenishing port (13) is opened, the water replenishing port (13) is connected with the water replenishing pipe, the water replenishing pipe is provided with an electromagnetic valve, and the electromagnetic valve is opened or closed by receiving an electric signal sent by the water level controller (10); and/or

The bottom of the water tank (5) is provided with a water changing port (14), and the water changing port (14) is connected with a water changing pipe.

4. The new air purifying and refreshing device according to claim 1, wherein the two-way air interchanger (2) is a total heat exchanger, and the two-way air interchanger (2) is provided with an indoor air inlet (19) for sucking indoor discharge air and an indoor air outlet (20) for discharging the indoor discharge air to the outside.

5. The new air purifying and refreshing device according to claim 2, wherein the water retaining device (8) comprises a fixed frame, a plurality of water retaining blades and a plurality of fasteners, the plurality of water retaining blades are divided into a first water retaining blade group and a second water retaining blade group, the first water retaining blade group and the second water retaining blade group are arranged in a straight line, gaps exist between the water retaining blade groups and the upper portion and/or the lower portion and/or the left side and/or the right side of the fixed frame for air to pass through, and the first water retaining blade group and the second water retaining blade group are fixed on the fixed frame through the fasteners.

6. The new air purifying device according to claim 1, wherein a hole is formed in the top of the sealed cavity (25) of the sponge (6) for the water pipe (17) to pass through, the new air inlet and the new air outlet of the sealed cavity (25) are flange joints, an inclined water collecting tray (26) for collecting water is arranged at the bottom end inside the sealed cavity (25), the flange joint connected with the drain pipe (27) in a sealing manner is arranged at the joint of the bottommost end of the water collecting tray (26) and the sealed cavity (25), and a sealing valve is arranged on the drain pipe (27).

7. The new air purifying and refreshing device according to claim 1, wherein the sponge (6) is a tight porous sponge plate, and the sponge plate is filled in the sealed cavity (25).

8. The new fresh air purifying device according to claim 1, wherein the air conditioning system (15) comprises a closed loop formed by connecting pipes, the closed loop is sequentially provided with an evaporator (11), a compressor (22), a condenser (23) and a throttling component (12) in a clockwise direction, and an air outlet of the second air inlet pipe (16) is connected with a fresh air inlet of the evaporator (11).

9. The new fresh air purifying device according to claim 1, wherein the air inlet of the fresh air duct (3) is located outdoors, and the air inlet of the fresh air duct (3) is connected with a fresh air filter screen (1) for primarily filtering fresh air from the outdoors.

10. The new air purifying and refreshing device according to claim 9, wherein the outside of the new air filtering net (1) is provided with rain-proof shutters (21).