CN108692389B

CN108692389B - Air treatment equipment and air treatment system

Info

Publication number: CN108692389B
Application number: CN201710086298.6A
Authority: CN
Inventors: 大森宏; 王文鹏; 岳宝
Original assignee: Midea Group Co Ltd
Current assignee: Midea Group Co Ltd; Guangdong Midea White Goods Technology Innovation Center Co Ltd
Priority date: 2017-02-17
Filing date: 2017-02-17
Publication date: 2020-01-31
Anticipated expiration: 2037-02-17
Also published as: CN108692389A

Abstract

The invention discloses air treatment equipment and an air treatment system, wherein the air treatment equipment comprises an air pipe embedded in a wall opening and an indoor unit body exposed indoors, an air purification pipe inner channel and an indoor air pipe inner channel are formed in the air pipe, the indoor unit body is provided with a purified air outlet, an indoor air inlet and an air suction device (15), the air treatment equipment also comprises an air passage switching device and an air purification device, the air passage switching device is used for selecting to conduct the indoor air pipe inner channel or the purified air pipe inner channel so as to enable the air treatment equipment to correspondingly switch to work in an internal circulation working mode or an induced air working mode, the internal circulation and induced air working mode can be effectively realized by arranging a circulation double passage and the air passage switching device thereof in the air pipe, the structural design is compact, the occupied space is small, the whole machine is more stable and reliable in working, and the working performance of the whole machine is good.

Description

Air treatment equipment and air treatment system

Technical Field

The invention relates to air treatment equipment, in particular to air treatment equipment, and further relates to air treatment systems.

Background

The problem of air pollution is more and more prominent in the current society, the health of people is seriously harmed, in order to deal with the problem of increasingly worsened air pollution, various air treatment equipment is widely applied to families, office buildings, hospitals, schools and the like by , wherein, a fresh air device is air treatment equipment which is more applicable than , and has stronger practicability.

The central fresh air system comprises a host machine arranged at the top of the room, an air inlet pipe and an air outlet pipe, indoor dirty air is discharged out of the room through the air outlet pipe, outdoor fresh air is purified in the fresh air host machine through the air inlet pipe and then is sent into the room, a fan and a filter screen are arranged in the fresh air host machine like , the fan comprises an induced draft fan and an exhaust fan to realize bidirectional circulation of airflow, and some of the fresh air host machine also comprises a total heat exchanger to realize partial temperature exchange of the indoor air and the outdoor air and adjust air humidity.

The wall-hanging type and cabinet type fresh air fans integrate components such as fans, filter screens and the like on machines to form a main machine, the main machine is installed indoors in a common mode and is communicated with the outside through an inlet pipeline and an outlet pipeline, pipelines are short and hidden in the wall and are invisible, the fans are divided into an induced draft fan and a blower, the induced draft fan introduces indoor dirty air through an air port around a main machine shell and exhausts the indoor dirty air out of the room during work, the blower introduces outdoor fresh air through an air inlet pipeline and sends the outdoor fresh air into the room after passing through a filter component ( is a multi-stage filter screen in a common mode), in addition, a full heat exchanger is additionally arranged in a common mode of configuring a higher wall-hanging type and cabinet type fresh air fans , and.

The wall-through type fresh air machine is -shaped and is arranged on a wall or glass, the fresh air machine is arranged inside the wall or glass by punching holes ( -shaped diameter is more than 15 cm) on the wall or glass, outdoor air is introduced into the fresh air machine through an internal fan and is sent into a room through a filter assembly (filter screen), the wall-through type fresh air machine -shaped is unidirectional flow of airflow, and the intermittent indoor and outdoor air exchange of degree is realized by controlling the forward and reverse rotation of the fan for some products.

For the wall-mounted type and cabinet type fresh air machines, although saves ventilating pipes in a fixed range, the occupied space is large, the machine is heavy, the power is large, the energy consumption is too high, and the use is not economical, the wall-penetrating type fresh air machines generally filter through filter screens, the efficiency of times of filtering is low, the requirements of fresh air are difficult to meet, and the diameter requirements of wall holes are too high due to the fact that the wall-penetrating type fresh air machines are required to be integrally mounted in the wall holes, the practicability is reduced, and the selection of consumers is seriously influenced.

In addition, the central fresh air system, the wall-mounted type fresh air machine and the cabinet type fresh air machine adopt filter screens as air dust removal devices, fresh air machines also adopt electrostatic dust removal devices as the air dust removal devices, but the electrostatic dust removal devices are limited in an inherent mode formed by electrostatic fields, the electrostatic fields are formed by adopting traditional plates which are oppositely arranged in parallel at intervals, the fresh air machines are large in size and large in occupied space, air flow to be subjected to dust removal passes through the fresh air machines straightly and quickly, the air dust removal efficiency is low frequently, the quality of introduced fresh air is low frequently, the health of a human body is affected, and the acceptance of the fresh air machines adopting the electrostatic dust removal devices on the market is low.

More seriously, the new air blower of the above type generally has the defect of single function , only has the function of air external circulation, in the case of severe haze of external air, not only increases the working load of the filter assembly of the new air blower to make it easily damaged, but also increases the quality of the air sucked from the outside and filtered even the quality of the air originally in the room, for example, in order to form an internal circulation working mode, two fans are respectively and independently formed into an internal circulation mode and an external circulation mode, which not only does not overcome the above mentioned disadvantages of the existing new air blower, but also causes the new air blower to be more bulky and more complex in size, and the air duct is more complicated in cabinet type, in addition, indoor air inlets are directly formed on the indoor wall-mounted new air blower, the switching cover plate inside the body selectively shields the indoor air inlets or is connected with the external air inlets of the outdoor air inlet duct, to realize the switching between the external circulation working mode and the internal circulation mode, but also does not change the local air inlet space of the wall-mounted new air blower and the wall-mounted air blower, and the wall-mounted new air blower directly forms a larger indoor air inlet duct, and the internal air inlet space of the internal air inlet duct, which can not directly impact the internal circulation chamber, and the internal circulation of the internal air inlet duct, and the internal circulation fan can not cause the internal circulation fan, and the internal circulation fan can not cause the defects of the internal circulation fan, and the internal air inlet duct of the internal circulation fan can not cause the defects of the internal circulation fan, and the internal circulation fan can not cause the defects of the internal air inlet duct of the internal circulation fan, and the defects of the filtering fan, and the internal air inlet duct of the internal circulation fan, and the internal circulation fan can not cause the internal circulation fan, and the defects of the filtering fan, and the defects of the fan, and the fan can cause the fan, and the fan can not cause.

The above defects of the fresh air fan form a technical bottleneck restricting the development of the fresh air fan in steps, and hazard factors are not recognized by technical personnel in the field to have serious hidden dangers so far, and particularly how to effectively save indoor space and ensure good and reliable working performance on the basis of the fresh air fan having an internal circulation working mode and an external circulation working mode becomes a technical problem in the field.

Disclosure of Invention

The invention aims to provide air treatment equipment, which can effectively realize internal circulation and induced air working modes, has good working performance, is stable and reliable, and can effectively reduce the occupied indoor space in an installation form.

In order to achieve the above object, the present invention provides air treatment devices, including an air duct and an indoor machine body, wherein the air duct has an inner channel of clean air duct and an inner channel of indoor air duct, the air treatment device further includes an air duct switching device, and the air duct switching device is configured to selectively the inner channel of indoor air duct or the inner channel of clean air duct is conducted so that the air treatment device is switched to operate in an inner circulation operation mode of indoor air circulation or an induced air operation mode of outdoor air introduced into the room.

Preferably, the indoor unit body is provided with a purified air outlet, an indoor air inlet and an air suction device, and the air processing equipment further comprises an air purification device, in the internal circulation working mode, indoor air enters the indoor air pipe channel from the indoor air inlet under the action of the air suction device, is purified by the air purification device and then is discharged to the indoor from the purified air outlet; in the induced air working mode, outdoor air is introduced into the channel in the purified air pipe from the outer shaft end of the air pipe under the action of the air suction device, is purified by the air purification device and then is discharged to the indoor from the purified air outlet.

Preferably, the air duct has a sleeve structure including an inner duct and an outer duct, of annular ducts between an inner duct chamber and the inner and outer ducts is an inner duct passage of the clean air duct, an outer axial end surface of the inner duct passage of the clean air duct is provided with an air inducing valve for opening to introduce outdoor air, an inner axial end of the inner duct passage of the clean air duct communicates with the air suction device, the inner duct chamber communicates with an inner axial end of another of the annular ducts through the indoor air inlet, and a communication valve for opening to communicate with each other is provided between an outer axial end of the inner duct chamber and an outer axial end of the annular duct chamber.

Preferably, the annular tube cavity is a channel in the air purification tube, the inner tube is an internal circulation air inlet tube, an outer shaft end of the inner tube is connected with an inner tube end surface disc, a central blocking disc part of the inner tube end surface disc blocks an outer shaft end surface of the inner tube, an outer ring part of the inner tube end surface disc seals the outer shaft end surface of the annular tube cavity and is provided with an outdoor vent communicated with the annular tube cavity, and an indoor vent communicated with the annular tube cavity is arranged on the outer peripheral wall of the tube body of the outer shaft end of the inner tube;

the air channel switching device comprises a switching blocking sleeve, the switching blocking sleeve comprises a sleeve part and a blocking sleeve end surface disc connected to the outer end surface of the sleeve part, the blocking sleeve end surface disc is provided with a central through hole suitable for the inner pipe to pass through, the outer peripheral edge part of the blocking sleeve end surface disc is provided with an outdoor air communication port, and the outer peripheral wall of the sleeve part is provided with an indoor air communication port;

the switching blocking sleeve is fixedly sleeved at the outer shaft end of the inner pipe, the blocking sleeve end surface disc is attached to the inner side surface of the inner pipe end surface disc in an abutting mode, the blocking sleeve end surface disc and the inner pipe end surface disc are in relative rotation fit to form the induced draft valve, and the sleeve portion of the switching blocking sleeve and the outer peripheral wall of the pipe body at the outer shaft end of the inner pipe are in relative rotation fit to form the communicating valve;

the inner pipe is rotatable with respect to the switching sleeve and is sequentially in a th rotation position for opening the induced draft valve and a second rotation position for opening the communication valve, in the th rotation position, the outdoor vent is aligned and communicated with the outdoor air communication port and the indoor vent and the indoor air communication port are staggered with each other and closed, and in the second rotation position, the indoor vent is aligned and communicated with the indoor air communication port and the outdoor vent and the outdoor air communication port are staggered with each other and closed.

Preferably, the outdoor vents and the indoor vents at the outer shaft end of the inner pipe are same in number and are arranged at equal intervals along the circumferential direction, and the outdoor vents and the indoor vents are correspondingly arranged at along the circumferential direction;

or the outdoor air communication ports and the indoor air communication ports at the outer shaft end of the switching blocking sleeve are the same in number and are arranged at equal intervals in the circumferential direction, the outdoor air communication ports and the indoor air communication ports are correspondingly arranged at in the circumferential direction, the outdoor ventilation ports and the indoor ventilation ports on the inner pipe are the same in number and are arranged at equal intervals in the circumferential direction, and the distribution circular rings of the outdoor ventilation ports and the distribution circular rings of the indoor ventilation ports are staggered in the circumferential direction.

Preferably, the air duct switching device further comprises a rotary driving assembly, and the rotary driving assembly is connected with an inner shaft end of the inner pipe to control the inner pipe to rotate.

Preferably, the rotary driving assembly comprises a driving control device, a gear transmission mechanism and a rotary connecting piece which sequentially control transmission, and the rotary connecting piece is connected with the inner shaft end of the inner pipe.

Preferably, an indoor air inlet channel communicated with the indoor space through the indoor air inlet is arranged in the indoor unit body, and the indoor air inlet channel is independent and separates an inner cavity of the indoor unit body from the annular tube cavity;

wherein, the swivelling joint spare is including placing in the swivelling joint cover in the indoor air inlet channel, axle stubs of swivelling joint cover are connected the inner shaft end of inner tube, axle stubs in addition with gear drive's output shaft links to each other, it has intake pipe air inlet to link up on the periphery wall of swivelling joint cover, makes indoor air inlet channel with inner tube lumen intercommunication.

Preferably, gear drive includes the turbine worm mechanism, driving gear and the driven gear that transmit in proper order, driven gear's output shaft the swivelling joint spare, indoor set body include with the dustcoat that the tuber pipe links to each other, the dustcoat internal fixation is provided with the installation support body, drive control device and gear drive install in on the installation support body.

Preferably, a plurality of th diversion flanges and second diversion flanges which are arranged at intervals along the axial direction and located at two radial sides are respectively arranged on the inner peripheral wall of the channel in the purified air pipe, the th diversion flanges and the second diversion flanges are staggered in sequence along the axial position to form a purified air deflection channel, and outdoor air entering from the outer shaft end of the channel in the purified air pipe is deflected along the purified air deflection channel and flows out from the inner shaft end of the channel in the purified air pipe.

Preferably, the air treatment equipment further comprises a guide plate arranged in the inner channel of the purified air pipe, the guide plate extends spirally along the axial direction to form a purified air spiral channel, and outdoor air entering from the outer shaft end of the inner channel of the purified air pipe flows out from the inner shaft end of the inner channel of the purified air pipe along the purified air spiral channel.

Preferably, the ratio of the cross-sectional areas of the annular tube cavity and the inner tube cavity is 2-4, and preferably 3.

Preferably, the spiral guide plate is wound in the channel in the air purification pipe for 2-5 turns, preferably 3 turns.

Preferably, the air treatment equipment includes the water conservancy diversion cover, the water conservancy diversion is the spiral blade form install in on the periphery wall of water conservancy diversion cover, the water conservancy diversion cover is located on the inner tube and with it links to each other to switch the spacer sleeve.

Preferably, the outer pipe comprises a dust collecting pipe capable of being charged, the air cleaning device comprises an electrostatic dust removing structure arranged in a channel in the air cleaning pipe, the electrostatic dust removing structure comprises a high voltage generator, an electrode wire and a dust collecting pipe, the electrode wire extends along the axial direction of the flow guide sleeve and penetrates through each flow guide plate, of the electrode wire and the dust collecting pipe is electrically connected with the positive pole of the high voltage generator, and of the electrode wire and the dust collecting pipe is electrically connected with the negative pole of the high voltage generator.

Preferably, the electrode wires are arranged at equal intervals along the circumferential direction of the flow guide sleeve.

Preferably, the diameter of a cylinder surrounded by a plurality of electrode wires is not more than 80% of the inner pipe diameter of the dust collecting pipe, and the radial distance between the electrode wires and the dust collecting pipe is not less than 1 cm.

Preferably, the number of the electrode wires is 3-6, preferably 4.

Preferably, the electrode wire is straightened along the axial direction, the axial length of the electrode wire is not greater than the length of the dust collecting pipe, the end of the electrode wire is fixedly connected with an insulated electrode wire fixing seat, and the other end of the electrode wire is electrically connected with the high-voltage generator.

Preferably, the diameter of the electrode wire is 0.08-0.2 mm.

Preferably, the dust collecting pipe is a conductive metal pipe, and the flow guide sleeve, the flow guide plate and the switching sleeve are made of insulating materials.

Preferably, the high voltage generator is disposed in the indoor body, or the inner tube is an insulating material tube, and the high voltage generator is disposed in the inner tube.

Preferably, the discharge voltage of the high-voltage generator is 5-9 KV.

Preferably, the air cleaning device further comprises an ozone filtering module, wherein the side of the ozone filtering module is aligned with the inner axial end of the air pipe at intervals, and the air suction device is arranged on the other side of the ozone filtering module.

Preferably, the ozone filter module is a metal honeycomb structure formed with a plurality of honeycomb holes, and the ozone filter module has a surface coating layer catalyzing decomposition of ozone.

Preferably, the air treatment apparatus comprises a plurality of stages of the ozone filter modules arranged between the inner shaft end of the air duct and the air suction device.

Preferably, the air suction device is an axial fan, the axial fan and the ozone filtering module are respectively installed at two sides of an installation bracket of the axial fan, and the installation bracket is fixedly installed in the indoor unit body.

Preferably, air purification device still includes electronic control module and ozone sensor, the ozone sensor sets up the air-out side of ozone filter module, electronic control module configures into the comparison the ozone content signal that the ozone sensor detected and the last threshold value of ozone content and send out the warning signal when judging that ozone exceeds the standard.

Preferably, the electronic control module is connected with a standby battery.

Preferably, an outer cover at the top of the indoor machine body is provided with a replacement valve positioned right above the ozone filter module, and the ozone filter module can be disassembled and assembled through the opened replacement valve .

Preferably, the air pipe is a through-wall pipe embedded in a wall hole, the outer pipe further comprises a mounting sleeve sleeved outside the dust collecting pipe, the mounting sleeve is embedded in the wall hole in the mounting wall, the outer end of the mounting sleeve penetrates out of the wall hole, a peripheral flange attached to the inner wall surface of the mounting wall is formed at the inner end of the mounting sleeve, the indoor unit body comprises an outer cover, and the outer cover is fixedly connected with the peripheral flange of the mounting sleeve.

Preferably, an outer shaft end limiting structure is arranged at the outer shaft end of the mounting sleeve, and the outer ends of the dust collecting pipe, the switching retaining sleeve and the inner pipe are abutted to the outer shaft end limiting structure;

and the air treatment equipment also comprises an inner end positioning sleeve which is embedded into the inner shaft end of the mounting sleeve to axially position the dust collecting pipe, the flow guide sleeve and the inner pipe.

Preferably, the installation sleeve is installed in an inclined mode, the inner shaft end of the installation sleeve is higher than the outer shaft end, and the horizontal lifting angle is 3-5 degrees.

Preferably, the wall thickness of the installation wall is not less than 25cm, and the aperture of the wall hole for installing the installation sleeve is not more than 15 cm.

Preferably, the outer axial end of the mounting sleeve is also mounted with a primary baffle and/or a primary screen.

Preferably, the clean air outlet is opened in a housing of the indoor unit, and a grill cover is detachably attached to the clean air outlet, so that the air suction device and the air cleaning device installed in the housing can be taken out from the clean air outlet.

Preferably, the air suction device is a single axial fan, and the clean air outlet and the axial fan are axially aligned with the inner axial end of the air hose.

, the invention also provides air treatment systems, which comprise a mounting wall provided with a wall opening and the air treatment equipment, wherein the air pipe of the air treatment equipment is embedded in the wall opening as a through-wall pipe.

Through the technical scheme, in the air treatment equipment, the internal circulation and air induction working modes can be effectively realized by arranging the two circulation channels and the air channel switching device in the air pipe, the air treatment equipment is compact in structural design, a large number of air inlet pipes, air exhaust pipes and the like are not needed, the occupied space is small, after air sucked into the fan is buffered by the air channel, the whole machine is more stable and reliable in working, is not easy to vibrate, and has good working performance. In addition, the spiral channel is adopted in the circulating double channels, so that the air flow buffering is facilitated, the air flow path is prolonged, the air dust removal effect is enhanced, in addition, the air channel switching device is exquisite in design, compact in structure, convenient and accurate to control, the electrostatic dust removal device is compact in arrangement, the dust removal efficiency is high, and the effect is remarkable.

Additional features and advantages of the invention will be set forth in the detailed description which follows.

Drawings

The accompanying drawings are included to provide a further understanding of the invention and constitute a part of this specification, and together with the following detailed description , serve to explain the invention without limiting it.

FIG. 1 is a schematic cross-sectional view of an embodiment of an air treatment unit of the present invention, with portions of the cross-sectional lines omitted for clarity;

FIG. 2 is a schematic air flow diagram of the induced draft and internal cycle modes of operation of the air treatment apparatus of the embodiment of FIG. 1;

FIG. 3 is a perspective view of the air treatment device of the embodiment shown in FIG. 1;

FIG. 4 is a left side view of FIG. 3;

FIG. 5 is a perspective cross-sectional view A-A of FIG. 4;

FIG. 6 is a schematic view of the drive control device and gear train of the air treatment apparatus of the embodiment shown in FIG. 1, with parts such as the dust collection tube, the inner tube, etc. omitted for clarity;

FIG. 7 is a schematic view of the rotary drive assembly of the inner tube of the embodiment of FIG. 1, with the guide sleeve and the like omitted for clarity;

FIG. 8 is a schematic perspective view of the inner tube of the embodiment of FIG. 1;

FIG. 9 is a schematic perspective view of the switching sleeve of the embodiment of FIG. 1;

fig. 10 is a schematic view of a combination of a switching sleeve and a deflector sleeve of the embodiment of fig. 1;

FIG. 11 is a schematic view showing the spiral flow direction of the air flow in the passage in the purge air pipe;

FIG. 12 is a schematic view of the connection of the wire electrode of the embodiment of FIG. 1;

FIG. 13 is a schematic view of the electrode connection structure as viewed from the end of the dust collection tube;

FIG. 14 is a perspective view showing the structure of an ozone filter module in the air dust removing device of the embodiment shown in FIG. 1;

FIG. 15 illustrates the use of the air dedusting apparatus of the embodiment of FIG. 1 in other ducts;

FIG. 16 is a schematic view of the arrangement of the passages in the purge air duct according to another embodiment of the present invention;

FIG. 17 is a schematic view of the air treatment system of the present invention with the drive control and high voltage generator components inside the air treatment device omitted for clarity of the drawing;

FIG. 18 is a line graph comparing the results of cleanings for the air handling system of the present invention at different wind speeds;

FIG. 19 is a line graph of the cleaning effectiveness versus time for the air handling system of the present invention in the high and low wind speed modes; and

FIG. 20 is a line graph illustrating the effect of ozone accumulation in an air treatment system according to the present invention.

Description of the reference numerals

1 inner pipe 1a pipe body

1b center retainer part 1c outdoor ventilation opening

1d indoor ventilation opening 2 switching blocking sleeve

2a sleeve part 2b sleeve end face disc

2c outdoor air communication port 2d indoor air communication port

2e electrode wire fixing seat 2f connecting pin seat

3 diversion sleeve 4 diversion plate

5 dust collecting pipe 6 annular pipe cavity

7 indoor air inlet channel of rotary connecting sleeve 8

9 air inlet pipe air inlet 10 rotary connecting piece

11 gear drive 11a worm gear mechanism

11b drive gear 11c th driven gear

11d second driven gear 12 drive control device

13 installing frame 14 ozone filter module

15 air suction device 16 high-pressure generator

17 housing 18 mounting sleeve

19 primary screen 20 primary baffle

21 electrode line 22 buckle connection structure

22a bayonet 23 dust collecting tube electrode point

No. flow guide flange of 24 wire electrode contact 25

26 second deflector flange 27 mounting wall

28 outer shaft end limiting structure 29 inner shaft end connecting pipe

141 electric control module 142 ozone sensor

171 replacement valve 172 grille cover

Outdoor air inlet A and indoor air inlet B

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.

In the present invention, unless specified to the contrary, use of the terms of orientation such as "upper, lower, top, bottom" or the like are generally described with respect to the orientation shown in the drawings or the positional relationship of the components with respect to each other in the vertical, or gravitational direction. "inside and outside" refers to the inside and outside of a lumen, cavity, or chamber.

As mentioned above, in order to realize double operation modes, the whole machine has compact structure, small space occupation and stable and reliable working performance, the invention provides kinds of novel air treatment equipment, in particular to a double-circulation embedded wall cave type air treatment equipment, which comprises an air pipe and an indoor machine body exposed indoors, as shown in figure 17. particularly, the invention forms a purified air pipe inner channel for passing outdoor air and an indoor air pipe inner channel for circulating indoor air in the air pipe, thereby having no scattered air inlet pipe, exhaust pipe and the like, the whole machine has simple and compact structure, as shown in figures 3 to 5, at this time, the indoor machine body is provided with a purified air outlet, an indoor air inlet and an air suction device 15, wherein, the air pipe can be a common air inlet pipe of various air treatment equipment, but in the following description combined with the attached figures, the air pipe is preferably a wall penetrating pipe embedded in a wall cave.

The air processing equipment further comprises an air channel switching device and an air purifying device, wherein the air channel switching device is used for selectively conducting only to conduct the indoor air pipe channel or purify the indoor air pipe channel, so that the air processing equipment is switched to work in an internal circulation working mode or an induced air working mode correspondingly, namely:

in the internal circulation working mode, indoor air enters an indoor air pipe channel from an indoor air inlet under the action of the air suction device 15, is purified by the air purification device and then is discharged to the indoor from a purified air outlet;

in the induced air operation mode, the outdoor air enters the channel in the purified air pipe from the outer shaft end of the air pipe (i.e. the right end of the paper surface shown in fig. 1 and 2, the same applies below) under the action of the air suction device 15, and is purified by the air purification device and then is discharged to the indoor from the purified air outlet.

After the air pipe is internally provided with the air purifying pipe channel and the indoor air pipe channel, the air flow has longer circulation path, even under the powerful suction action of the air suction device 15, the air flow can obtain good buffering in the air purifying pipe channel or the indoor air pipe channel in the air pipe, the impact on the whole machine is small, even if the impact is generated, the impact is mainly reflected in the wall-through type fixedly installed air pipe, and the impact vibration on the whole machine is small.

In addition, the air suction device 15 in the embodiment of fig. 1 is preferably a single axial flow fan, and the clean air outlet of the air treatment device and the axial flow fan are axially aligned with the inner axial end of the air duct, because the clean air duct inner channel and the indoor air duct inner channel are both integrated in the air duct, and the air flow outlet is at the inner axial end of the air duct, so that only a single blower needs to be arranged at the inner axial end of the air duct, instead of the double blower structure of the conventional double circulation air treatment device, in other words, the blower can be shared, so that the structural integration is high. In addition, as will be described below, since the passages in the clean air duct and the passages in the indoor air duct are compactly arranged in the air duct, the air flow path is long, and the air cleaning apparatus is also compactly arranged.

In order to realize the design of the channel in the purified air pipe and the channel in the indoor air pipe which have compact structure and long path and can be switched at proper time, the technical personnel in the field easily think of the mode of internally arranging double parallel pipes or more than double parallel pipes in the air pipe, however, the pipe diameter of the air pipe is inevitably required to be large so as to meet the air volume requirement, in order to realize compact structure and maximally increase the air intake, the internally-embedded wall hole type air processing equipment adopts a sleeve structure comprising an inner pipe 1 and an outer pipe, and any in an annular pipe cavity 6 between the inner pipe cavity and the outer pipe is the channel in the purified air pipe, namely, outdoor air can enter the inner pipe cavity or the annular pipe cavity 6 from the outer shaft end of the air pipe and then flows out from the corresponding inner shaft end.

At this time, the indoor air inlet in the indoor air inlet enters the air duct through the inner shaft end of in the inner tube cavity and the annular tube cavity 6, and then enters the cavity of the other from the outside, preferably flows out from the inner shaft end of the other , so that the indoor air and the air can be conveniently arranged through a common air channel which is only a common shaft end of the indoor air pipe and the air purification device.

On the basis, in order to realize the timely switching of the channel in the indoor air pipe and the channel in the purified air pipe, the air channel switching device is divided from the functional principle, and comprises two controllable switching valves, namely an air inducing valve capable of being opened timely to introduce outdoor air and a communicating valve capable of being opened timely to communicate the inner pipe cavity with the annular pipe cavity 6 (so as to form a complete channel in the indoor air pipe).

In the embodiment shown in fig. 1, the annular lumen 6 is selected to be a passageway within the purge air tube. In this case, the inner pipe 1 is an inner circulation intake pipe communicating with an indoor air inlet. Referring to fig. 2, at this time, the outdoor intake air a flows into the annular tube cavity 6 from outside to inside, the indoor intake air B enters from the inner shaft end of the inner tube cavity, turns into the annular tube cavity 6 at the outer shaft end of the inner tube cavity, and finally flows out from the inner shaft end of the annular tube cavity 6.

Referring to fig. 8 and 9, the present invention also provides preferred structural forms of air duct switching device, which can realize the common functions of the air inducing valve and the communication valve through simple rotation control, specifically, the air duct switching device comprises an outer shaft end part of an inner pipe 1 and a switching sleeve 2 matched with the outer shaft end part.

First, an inner tube end face disc is connected to an outer shaft end of the inner tube 1 in fig. 8, a central blocking disc portion 1b of the inner tube end face disc blocks an outer shaft end face of the inner tube 1, an outer ring portion of the inner tube end face disc covers an outer shaft end face of the annular tube cavity 6 and is provided with an outdoor vent 1c communicated with the annular tube cavity 6, and an indoor vent 1d communicated with the annular tube cavity 6 is arranged on a tube body peripheral wall of the outer shaft end of the inner tube 1.

Next, the switching sleeve 2 in fig. 9 includes a sleeve portion 2a and a sleeve end face disk 2b connected to an outer end face of the sleeve portion 2a, the sleeve end face disk 2b is provided with a central through hole adapted to pass the inner tube 1 therethrough, an outer peripheral edge portion of the sleeve end face disk 2b is provided with an outdoor air communication port 2c, and an outer peripheral wall of the sleeve portion 2a is provided with an indoor air communication port 2 d.

Finally, during assembly, the switching sleeve 2 is fixedly sleeved at the outer shaft end of the inner tube 1, of the two can rotate, and of the two can be relatively fixed, the switching sleeve 2 is sleeved from the inner shaft end of the inner tube 1, and the sleeve end face disc 2b is tightly attached to the inner side of the inner tube end face disc, so that the relative rotation fit of the sleeve part 2a of the switching sleeve 2 and the outer tube peripheral wall of the outer shaft end of the inner tube 1 forms the aforementioned air inducing valve, and the relative rotation fit between the sleeve part 2a of the switching sleeve 2 and the outer tube peripheral wall of the outer shaft end of the inner tube 1 forms the aforementioned communication valve.

To realize this rotation switching, as shown in fig. 8 and 9, it is a simpler manner that the outdoor vents 1c and the indoor vents 1d at the outer shaft ends of the inner tubes 1 are the same in number, arranged at equal intervals in the circumferential direction and disposed at in the circumferential direction, and the outdoor air communication ports 2c and the indoor air communication ports 2d on the switching sleeve 2 are the same in number, arranged at equal intervals in the circumferential direction and staggered by a reasonable angle in the circumferential direction position, that is, the distribution rings of the outdoor air communication ports 2c and the distribution rings of the indoor air communication ports 2d are staggered in the circumferential direction, to realize the above rotation switching function.

In order to realize the rotation switching control between the inner tube 1 and the switching retaining sleeve 2, the air channel switching device further comprises a rotation driving assembly, and the rotation driving assembly is connected with the inner shaft end of the inner tube 1 so as to control the rotation of the inner tube 1.

Referring to fig. 6 and 7, as a preferred example of , the rotary driving assembly includes a driving control device 12 for sequentially controlling the transmission, a gear transmission 11 and a rotary connecting member 10, wherein the rotary connecting member 10 is connected to the inner shaft end of the inner tube 1 so as to accurately control the rotary opening of the inner tube 1 by using the accuracy of the gear driving structure, wherein the driving control device 12 is preferably an electric control device, such as an electric motor, etc., the gear transmission 11 may include a worm gear 11a, a driving gear 11b and a driven gear, which may be a combined driven gear 11c and a second driven gear 11d, the output shaft of the driven gear is connected to the rotary connecting member 10, the rotary connecting member 10 includes a rotary connecting sleeve 7, shaft end of the rotary connecting sleeve 7 is connected to the output shaft of the gear transmission 11, and shaft ends are connected to the inner shaft end of the inner tube 1, preferably, as shown in fig. 7, the bayonet 22a detachable connection is formed with the inner shaft end of the inner shaft end of the inner tube 1 of fig. 8 by using the bayonet connection 22.

The indoor unit body comprises an outer cover 17 connected with an air pipe, an installation frame body 13 is fixedly arranged in the outer cover 17, a driving control device 12 and a gear transmission mechanism 11 can be installed on the installation frame body 13, an indoor air inlet channel 8 communicated with the indoor through an indoor air inlet is further arranged in the indoor unit body, the indoor air inlet channel 8 is independently isolated from an inner cavity and an annular pipe cavity 6 of the indoor unit body, a rotary connecting sleeve 7 is arranged in the indoor air inlet channel 8, or more air inlet pipe air inlets 9 are communicated with the outer peripheral wall of the rotary connecting sleeve 7 for realizing the communication between the indoor air inlet channel 8 and the pipe cavity of the inner pipe, and the figure 5 shows.

Another important improvement of the present invention is the extension design of the air flow channel in the air duct to increase the buffering effect and facilitate the dust removal design, increase the dust removal time and enhance the effect, as shown in FIG. 16, in embodiments, the inner peripheral wall of the channel in the clean air duct is respectively provided with a plurality of th flow guide flanges 25 and second flow guide flanges 26 which are arranged at intervals along the axial direction and located at two sides in the radial direction, each th flow guide flange 25 and second flow guide flange 26 are staggered along the axial direction in sequence to form a clean air deflection channel, the flow guide flanges are preferably circular arc plates, so that the outdoor air entering from the outer shaft end of the channel in the clean air duct flows out from the inner shaft end of the channel in the clean air duct along the clean air deflection channel in a deflection manner, therefore, FIG. 16 obtains the effective extension of the flow channel in a deflection manner.

In the embodiment shown in fig. 1, the air treatment equipment is provided with a spiral blade-shaped guide plate 4 shown in fig. 10 and 11 in the inner channel of the purified air pipe, the guide plate 4 extends spirally along the axial direction to form a purified air spiral channel, outdoor air entering from the outer shaft end of the inner channel of the purified air pipe flows out from the inner shaft end of the inner channel of the purified air pipe along the purified air spiral channel, because the air resistance in the annular pipe cavity 6 is increased due to the arrangement of the guide plate 4, and the air resistance in the inner pipe cavity is small, on the basis of ensuring the circulation amount of the air flow, in order to enable the axial flow fan to be at the optimal working point, namely the intersection point of the system resistance and the air flow, the resistance influence is eliminated by enlarging the cross-sectional area of the annular pipe cavity 6 to introduce more air flow, the balance between the resistance and the air flow is achieved, the ratio of the cross-sectional areas of the annular pipe cavity 6 and the inner pipe cavity is approximately 2-4, in the preferred embodiment of fig. 1 and 2, 3, in fig. 10, the spiral guide plate 4 is coiled for approximately 3 turns, and the purification efficiency is increased, which is beneficial to improve.

In the embodiment of fig. 10, the air treatment device comprises a flow guide sleeve 3, the flow guide 4 is in the shape of a spiral blade and is mounted on the peripheral wall of the flow guide sleeve 3, the flow guide sleeve 3 is sleeved on the inner pipe 1 and is connected with the switching retaining sleeve 2, the flow guide sleeve 3 is convenient for mounting and fixing the flow guide 4, and is convenient for the integral assembly of the air pipe and the mounting arrangement of the switching retaining sleeve 2 and the subsequent electrode wire 21, and the following will be specifically mentioned.

Another compact design of the present invention resides in the arrangement of the air cleaning device, the dust removing method is various, and in view of the compactness of the structure, the installation space and the dust removing effect, in the embodiment shown in fig. 12 and 13, the electrostatic dust removing method is preferably used, wherein the outer tube includes the dust collecting tube 5 capable of being charged, the air cleaning device includes the electrostatic dust removing structure arranged in the passage in the air cleaning tube, the electrostatic dust removing structure includes the high voltage generator 16, the electrode wire 21 and the dust collecting tube 5, the electrode wire 21 extends in the axial direction and passes through each of the flow guide plates 4, of the electrode wire 21 and the dust collecting tube 5 is electrically connected to the positive electrode of the high voltage generator 16, and is electrically connected to the negative electrode of the high voltage generator 16, so that the air dust particles in the passage in the air cleaning tube are charged by the electrode wire 21, when flowing in a long spiral passage of the cleaning air, the air dust particles are absorbed to the dust collecting tube 5 later or earlier, thereby obtaining the air cleaning effect, in this invention, the electrostatic dust removing structure, the electrode wire 21 is conveniently arranged, the space structure is compact, the air dust particles are easily absorbed, the passage, the dust removing effect is more easily broken down, the positive electrode wire is more easily, the negative electrode is more easily, the positive electrode is connected to the negative electrode.

In order to form a circular uniform electrified field, the electrode wires 21 are preferably a plurality of wires and are arranged at equal intervals along the circumferential direction of the flow guide sleeve 3, fig. 13 is preferably 4 wires, is 3-6 density distribution, when the inner channel of the air purification pipe is the annular pipe cavity 6, the diameter of the cylinder formed by the plurality of electrode wires 21 is larger than the outer diameter of the inner pipe 1, and the electrode wires 21 are closer to and close to the inner pipe 1 relative to the collector pipe 5, so as to obtain a larger electric field, in the present invention, the diameter of the cylinder formed by the plurality of electrode wires 21 is not larger than 80% of the inner diameter of the dust collection pipe 5, and the radial distance of the electrode wires 21 from the dust collection pipe 5 is not smaller than 1 cm., because the diameter of the cylinder formed by the plurality of electrode wires 21 is certainly larger than the outer diameter of the inner pipe 1, is not smaller than 40% of the inner diameter of the dust collection pipe 5 in the inner channel of the air purification pipe, in the embodiment of fig. 13, the diameter of the cylinder formed by.

The electrode wire 21 is made of metal, the diameter is 0.008-0.5mm, for example, tungsten wire with the diameter of 0.2mm is preferred, and high-voltage discharge is easy, the thinner the electrode wire 21 is, the better the discharge effect is, but the higher the cost is, the less easy to process and easy to stretch and break, so the diameter is preferably 0.08-0.2mm, in length, the electrode wire 21 is straightened along the axial direction, and the axial length is not more than the length of the dust collecting tube 5, preferably, the axial length of the electrode wire 21 can be 5-15mm shorter than the length of the dust collecting tube 5, so as to ensure that ionized dust particles can be adsorbed on the electrode wire inside the dust collecting tube 5, ends of the electrode wire 21 are fixedly connected with an insulated electrode wire fixing seat 2e, see fig. 9 and 12, and the other ends can be electrically connected with the high-voltage generator 16 through the electrode wire contacts 24, in fig. 13, because there are 4 electrode wires 21, two sets are adopted, each set is connected with two electrode wire contacts 24 through bolts, likewise, and the ends of the dust collecting tube 5 can be connected with the.

The dust collecting pipe 5 is preferably a conductive metal pipe, such as an aluminum alloy pipe, which is easy to conduct electricity, collect dust and clean, and the diversion sleeve 3, the diversion plate 4 and the switching sleeve 2 are all made of insulating materials to prevent short circuit. The high voltage generator 16 may be disposed in an indoor body, such as the mounting frame 13, and connected to the wire electrode 21 and the dust collecting pipe 5 through wires. Alternatively, when the inner pipe 1 is an insulating material pipe, the high voltage generator 16 may be provided in the inner pipe 1 as shown in fig. 15. The higher the discharge voltage of the high voltage generator 16, the higher the purification efficiency, but the more ozone is generated. Therefore, the voltage is preferably 5 to 9KV, more preferably about 8KV, and the purification efficiency and the ozone generation amount are acceptable.

The sleeve structure with the spiral channel and the electrostatic dust collection structure thereof not only increase the flow, prolong the electrostatic dust collection time and obtain better dust collection effect, but also can accelerate the adsorption of charged dust on the inner peripheral wall of the dust collection pipe 5 by the centrifugal force caused by spiral flow, and the sleeve structure with the spiral channel and the electrostatic dust collection structure thereof can be applied to air pipes of various air treatment equipment to realize dust collection in a small space, as shown in figure 15, the aim of purifying the air in the pipe is achieved by replacing sections of pipelines, and the highest dust collection efficiency can reach more than 95 percent.

Because the high-voltage discharge dust removal process inevitably generates ozone, in order to purify the air in the step, the air purification device also comprises an ozone filter module 14 which is arranged at the downstream side of the electrostatic dust removal structure, therefore, the ozone filter module 14 is arranged in an indoor machine body, the axial outer side of the ozone filter module 14 is aligned with the inner shaft end of the air pipe at intervals, and the axial inner side is provided with an air suction device 15, and the suction force of the air suction device 15 ensures that the primarily purified air after dust removal in the annular tube cavity 6 passes through the ozone filter module 14 and is discharged into the room from an air outlet by the air suction device 15 after ozone removal.

In the preferred construction, the ozone filter module 14 is a metal honeycomb structure formed with honeycomb holes, preferably made of aluminum, which has high compactness, small installation space and large surface area, and has a surface coating for catalyzing the decomposition of ozone, and the ozone is decomposed by the reaction of air flowing through the honeycomb holes with the surface coating.

As shown in fig. 14, the ozone filtering module 14 may further include an electronic control module 141 and an ozone sensor 142, the ozone sensor 142 is disposed at the air outlet side of the ozone filtering module 14, and the electronic control module 141 is configured to compare the ozone content signal detected by the ozone sensor 142 with an upper threshold of the ozone content and send a warning signal when determining that the ozone exceeds the standard. Thus, the user can be fed back whether to replace the ozone filter module 14 in time according to the real-time monitoring of the ozone. To avoid the warning failure, the electronic control module 141 may also be connected to a backup battery.

In order to replace the ozone filter module 14, the casing 17 on the top of the indoor unit is provided with a replacement valve 171 located right above the ozone filter module 14, as shown in fig. 14, so that the ozone filter module 14 can be detached by opening the replacement valve , and only upward extraction is required.

In another replacement mode, the air suction device 15 is an axial fan, the axial fan and the ozone filter module 14 are respectively installed on both sides of the installation bracket of the axial fan, and they can be installed on the installation bracket by screws, etc. to form independent fan modules, the installation bracket is fixedly installed in the indoor unit, the housing 17 of the indoor unit is opened with a purified air outlet, the purified air outlet is detachably installed with a grille cover 172, as shown in fig. 3, 4, 14, the profile of the purified air outlet and the grille cover 172 is large enough, so that the air suction device 15 and the air cleaning device installed in the housing 17 can be taken out from the purified air outlet, and the replacement of the ozone filter module 14 and even the whole independent fan module is convenient.

In addition, to protect the exposed outer axial end of the through-wall pipe, the outer axial end of the mounting sleeve 18 is fitted with a primary baffle 20 and/or a primary screen 19. The primary baffle 20 may be a sealing plate, which is controlled to open at a proper time, or a grid plate, etc. The primary baffle 20 may block bugs, rain, etc. Primary filter screen 19 can filter great foreign matter, like leaf, wastepaper etc. and the inside jam that does not produce of guarantee equipment can normally work for a long time.

On the basis of the air treatment equipment, the invention also correspondingly provides air treatment systems, wherein each air treatment system comprises a mounting wall 27 provided with a wall opening, and the air pipe of the double-circulation wall-embedded hole type air treatment equipment is embedded in the wall opening, as shown in figure 17.

The outer pipe comprises a mounting sleeve 18 sleeved outside the dust collecting pipe 5, the mounting sleeve 18 and the dust collecting pipe are in clearance fit with each other with a difference of about 1-2mm, the mounting sleeve 18 is firstly embedded in a wall hole in a mounting wall 27, the outer end of the mounting sleeve 18 penetrates out of the wall hole, a peripheral flange attached to the inner wall surface of the mounting wall is formed at the inner end of the mounting sleeve 18, the indoor unit body comprises an outer cover 17, and the outer cover 17 is fixedly connected with the peripheral flange of the mounting sleeve 18. This forms a plug-in mounting of the air treatment device.

Specifically, the outer axial end of the mounting sleeve 18 is provided with an outer axial end stop 28, such as an annular bead with a raised inner wall. During assembly, the dust collecting pipe 5, the switching baffle sleeve 2, the guide plate 4, the guide sleeve 3 and the inner pipe 1 can be sequentially embedded in the mounting sleeve 18, and the outer ends of the dust collecting pipe are abutted to the outer shaft end limiting structure 28 to achieve outer end axial positioning. The outer end of the deflector sleeve 3 may be connected to a connecting pin boss 2f of the switching sleeve 2 shown in fig. 9 by a connecting pin. In addition, the air treatment equipment also comprises an inner end positioning sleeve 29, after the pipes are embedded, the inner end positioning sleeve 29 is embedded into the inner shaft end of the installation sleeve 18, and the embedded pipe sections of the inner end positioning sleeve 29 are respectively abutted against the dust collecting pipe 5, the flow guide sleeve 3 and the inner pipe 1 so as to realize the axial positioning of the inner ends of the pipes.

During installation, in order to achieve stable and firm installation, the installation sleeve 18 is preferably installed in an inclined manner, that is, the inner shaft end of the installation sleeve 18 is slightly higher than the outer shaft end, the horizontal lifting angle of the inner shaft end relative to the outer shaft end is 3-5 degrees, the wall thickness of the installation wall 27 is not smaller than 25cm, the aperture of the wall hole is not larger than 15cm, for example, about 10cm, so that the whole machine bearing at is achieved through the air duct and the installation wall 27 with the corresponding thickness.

In the preferred embodiment shown in fig. 1 and 5, the inner and outer sleeves are used, the annular tube cavity 6 is used as the inner channel of the purified air tube, the air channel switching device shown in fig. 8 and 9, the spiral guide plate 4 shown in fig. 10, and the air purification device for electrostatic dust removal and ozone removal shown in fig. 12 to 14 are arranged, and after being mounted on the mounting wall 27 shown in fig. 17, the start-up test of the air treatment system of the present invention is performed.

FIG. 18 is a line graph of comparative effects of purification rates of the air treatment system of the present invention at different wind speeds, FIG. 19 is a line graph of purification effects of the air treatment system of the present invention at high and low wind speed modes versus time, FIG. 20 is a line graph of test effects of the accumulated amount of ozone of the air treatment system of the present invention, FIG. 18 shows that in the induced air mode, even though the PM2.5 concentration of outdoor air is greater than 500ppb, the purification rates of the air treatment system of the present invention are at least 93% or more, FIG. 19 shows that the PM2.5 concentration can be significantly reduced from 500ppb to 100ppb or even lower within hours at both high and low wind speeds, and to zero, and FIG. 20 shows that the accumulated ozone content of the indoor environment is significantly lower than the national standard after the air treatment system of the present invention has been operated for a long period of time.

In summary, the air treatment device and the air treatment system of the invention are optimally designed through series, and at least the following aims are achieved:

1) and the volume is small: due to the modular design and the compact design in the air duct, the overall and local volume of the device is relatively small, and the device has little influence on the interior decoration of a home, especially a well-finished room.

2) And the installability is good: due to the compact design in the wall-through pipe, the pipe diameter is small, so that the installation can be realized only by forming a hole which is not more than 10cm on the wall body.

3) times of filtration efficiency is high, because of the design of the spiral flow channel and the electrostatic dust removal device in the pipe, the flow channel is increased, the dust removal time is prolonged, the dust capture is enhanced by centrifugal force, the collection of pollutants such as PM2.5 in the air can be effectively promoted through the unique design, and the dust removal rate can reach more than 95%.

4) And no consumable filtering: because the device adopts the modularized design of complete machine and part, easy dismounting, the filtering component can conveniently be taken out and installed, for example ozone filter module 14 just can wash, use repeatedly.

5) The use mode is various: the air-guiding device can realize two working modes of an air-guiding working mode for introducing external air and an internal circulation working mode for purifying indoor air.

6) Low power, low power consumption: because the low-power electrostatic dust collection and other filtering components and the single fan are adopted, the low-power operation can be realized.

7) The installation and maintenance are convenient: because the device adopts the modularized design of the whole machine and each part, the internal core components are mutually independent and can be respectively disassembled, replaced and maintained.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention. For example, the rotation driving assembly for driving the inner tube 1 and the switching sleeve 2 to rotate relatively is not limited to a gear transmission structure and a gear transmission mode, and can be simply modified, and an alternative winding drum mode is adopted for rotation control, namely the inner tube 1 is regarded as a drum, the control line is wound on the outer peripheral wall of the inner shaft end, the control line is stretched along the radial direction, and the accurate rotation angle of the inner tube 1 can be controlled according to the accurately characterized stretching amount.

It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.

In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.

Claims

1, air treatment devices, including air pipe and indoor organism, said air pipe form have clean air intraductal channel and indoor air intraductal channel, said air treatment device also include the switching device of the wind channel, the switching device of the said wind channel is used for choosing to turn on the said indoor air intraductal channel or clean air intraductal channel and make the said air treatment device switch over the working mode of working in the internal circulation of the indoor air circulation or induced draft working mode that the outdoor air introduces the indoor correspondingly;

wherein the indoor machine body is provided with a purified air outlet, an indoor air inlet and an air suction device (15), the air treatment equipment further comprises an air purification device, and under the action of the air suction device (15), indoor air enters the indoor air pipe channel from the indoor air inlet and is purified by the air purification device to be discharged to the indoor from the purified air outlet in the internal circulation working mode; in the induced air working mode, outdoor air is introduced into the channel in the purified air pipe from the outer shaft end of the air pipe under the action of the air suction device (15), is purified by the air purification device and then is discharged to the indoor from the purified air outlet;

the air pipe is of a sleeve structure comprising an inner pipe (1) and an outer pipe, in an annular pipe cavity (6) between the inner pipe cavity and the outer pipe is a channel in the purified air pipe, an air inducing valve which is opened to introduce outdoor air is arranged on the end face of the outer shaft end of the channel in the purified air pipe, the inner shaft end of the channel in the purified air pipe is communicated with the air suction device (15), the inner pipe cavity is communicated with the inner shaft end of another of the annular pipe cavity (6) to form the indoor air inlet, and a communication valve which is opened to communicate with each other is arranged between the outer shaft end of the inner pipe cavity and the outer shaft end of the annular pipe cavity (6).

2. The air treatment equipment according to claim 1, wherein the annular tube cavity (6) is a channel in the purified air tube, the inner tube (1) is an internal circulation air inlet tube, an outer shaft end of the inner tube (1) is connected with an inner tube end face plate, a central baffle part (1b) of the inner tube end face plate is used for blocking the outer shaft end face of the inner tube (1), an outer ring part of the inner tube end face plate is used for blocking the outer shaft end face of the annular tube cavity (6) and is provided with an outdoor vent (1c) communicated with the annular tube cavity (6), and an indoor vent (1d) communicated with the annular tube cavity (6) is arranged on the outer peripheral wall of the outer shaft end of the inner tube (1);

the air channel switching device comprises a switching retaining sleeve (2), wherein the switching retaining sleeve (2) comprises a sleeve part (2a) and a retaining sleeve end surface disc (2b) connected to the outer end surface of the sleeve part (2a), the retaining sleeve end surface disc (2b) is provided with a central through hole suitable for the inner pipe (1) to pass through, the outer peripheral edge of the retaining sleeve end surface disc (2b) is provided with an outdoor air communicating opening (2c), and the outer peripheral wall of the sleeve part (2a) is provided with an indoor air communicating opening (2 d);

the switching blocking sleeve (2) is fixedly sleeved at the outer shaft end of the inner pipe (1), the blocking sleeve end surface disc (2b) is attached to the inner side surface of the inner pipe end surface disc in a clinging mode, the blocking sleeve end surface disc (2b) and the inner pipe end surface disc are in relative rotation fit to form the induced draft valve, and the sleeve portion (2a) of the switching blocking sleeve (2) and the outer peripheral wall of the pipe body at the outer shaft end of the inner pipe (1) are in relative rotation fit to form the communication valve;

the inner pipe (1) can rotate relative to the switching sleeve (2) and is sequentially positioned at an -th rotation position for opening the induced draft valve and a second rotation position for opening the communication valve, at the -th rotation position, the outdoor vent (1c) is aligned and communicated with the outdoor air communication port (2c), the indoor vent (1d) and the indoor air communication port (2d) are staggered with each other and closed, and at the second rotation position, the indoor vent (1d) is aligned and communicated with the indoor air communication port (2d), the outdoor vent (1c) and the outdoor air communication port (2c) are staggered with each other and closed.

3. The air processing device according to claim 2, wherein the outdoor vents (1c) and the indoor vents (1d) at the outer axial end of the inner pipe (1) are equal in number and are arranged at equal intervals in the circumferential direction, the outdoor vents (1c) and the indoor vents (1d) are arranged correspondingly at in the circumferential position, the outdoor air communication ports (2c) and the indoor air communication ports (2d) on the switching sleeve (2) are equal in number and are arranged at equal intervals in the circumferential direction, and the distribution rings of the outdoor air communication ports (2c) and the distribution rings of the indoor air communication ports (2d) are staggered in the circumferential position;

or the outdoor air communication ports (2c) and the indoor air communication ports (2d) at the outer shaft end of the switching retaining sleeve (2) are the same in number and are arranged at equal intervals in the circumferential direction, the outdoor air communication ports (2c) and the indoor air communication ports (2d) are arranged in a circumferential position correspondingly, the outdoor ventilation openings (1c) and the indoor ventilation openings (1d) on the inner pipe (1) are the same in number and are arranged at equal intervals in the circumferential direction, and the distribution circular rings of the outdoor ventilation openings (1c) and the distribution circular rings of the indoor ventilation openings (1d) are staggered in the circumferential position.

4. The air treatment device according to claim 2, wherein the air duct switching device further comprises a rotary driving assembly, the rotary driving assembly is connected with the inner shaft end of the inner tube (1) to control the inner tube (1) to rotate, the rotary driving assembly comprises a driving control device (12) for controlling transmission, a gear transmission mechanism (11) and a rotary connecting piece (10), and the rotary connecting piece (10) is connected with the inner shaft end of the inner tube (1).

5. The air treatment equipment according to claim 4, wherein an indoor air inlet channel (8) communicated with the indoor through the indoor air inlet is arranged in the indoor unit, and the indoor air inlet channel (8) is independent and separates an inner cavity of the indoor unit from the annular pipe cavity (6);

the rotary connecting piece (10) comprises a rotary connecting sleeve (7) arranged in the indoor air inlet channel (8), shaft ends of the rotary connecting sleeve (7) are connected with an inner shaft end of the inner pipe (1), another shaft ends are connected with an output shaft of the gear transmission mechanism (11), and an air inlet pipe air inlet (9) is communicated with the outer peripheral wall of the rotary connecting sleeve (7), so that the indoor air inlet channel (8) is communicated with a pipe cavity of the inner pipe.

6. The air treatment device according to claim 5, wherein the gear transmission mechanism (11) comprises a worm gear mechanism (11a), a driving gear (11b) and a driven gear which are sequentially transmitted, an output shaft of the driven gear is connected with the rotary connecting piece (10), the indoor machine body comprises an outer cover (17) connected with the air pipe, a mounting frame body (13) is fixedly arranged in the outer cover (17), and the driving control device (12) and the gear transmission mechanism (11) are mounted on the mounting frame body (13).

7. The air treatment device according to claim 1 or 2, wherein the inner peripheral wall of the purified air pipe inner channel is provided with a plurality of th flow guide flanges (25) and second flow guide flanges (26) which are arranged at intervals along the axial direction and located at two sides in the radial direction, the th flow guide flanges (25) and the second flow guide flanges (26) are sequentially staggered along the axial direction to form a purified air deflection channel, and outdoor air entering from the outer axial end of the purified air pipe inner channel flows out from the inner axial end of the purified air pipe inner channel along the purified air deflection channel in a deflection manner.

8. The air treatment apparatus according to claim 1 or 2, further comprising a deflector (4) disposed in the interior passage of the purge air pipe, the deflector (4) extending in a spiral shape in an axial direction to form a purge air spiral passage along which the outdoor air entering from the outer axial end of the interior passage of the purge air pipe flows out from the inner axial end of the interior passage of the purge air pipe.

9. The air treatment device according to claim 8, wherein the ratio of the cross-sectional area of the annular tube cavity (6) to the inner tube cavity is 2-4, and the spiral guide plate (4) is wound for 2-5 turns in the channel in the air purification tube.

10. The air treatment device according to claim 9, wherein the ratio of the cross-sectional area of the annular lumen (6) to the inner tube lumen is 3.

11. An air treatment device according to claim 9, wherein the spiral deflector (4) is wound for 3 turns in the passage in the purge air duct.

12. The air treatment device according to claim 8 when dependent on claim 2, wherein the air treatment device comprises a flow guiding sleeve (3), wherein the flow guiding plate (4) is mounted on the outer circumferential wall of the flow guiding sleeve (3) in a spiral blade shape, and the flow guiding sleeve (3) is sleeved on the inner pipe (1) and connected with the switching sleeve (2).

13. The air treatment apparatus according to claim 12, wherein the outer tube comprises a dust collecting tube (5) capable of being charged, the air cleaning device comprises an electrostatic precipitation structure arranged in a channel in the cleaning air tube, the electrostatic precipitation structure comprises a high voltage generator (16), an electrode wire (21) and a dust collecting tube (5), the electrode wire (21) extends along the axial direction of the flow guide sleeve (3) and passes through each flow guide plate (4), of the electrode wire (21) and the dust collecting tube (5) is electrically connected with the positive pole of the high voltage generator (16), and is electrically connected with the negative pole of the high voltage generator (16);

the electrode wires (21) are arranged at intervals in the circumferential direction of the flow guide sleeve (3), the electrode wires (21) are straightened in the axial direction, the axial length of the electrode wires is not greater than the length of the dust collecting pipe (5), the ends of the electrode wires (21) are fixedly connected with the insulated electrode wire fixing seats (2e), and the ends of the electrode wires are electrically connected with the high-voltage generator (16).

14. The air treatment apparatus according to claim 13, wherein the air cleaning device further comprises an ozone filtering module (14), wherein side of the ozone filtering module (14) is aligned with the inner axial end of the air duct at intervals, the other side is provided with the air suction device (15), the ozone filtering module (14) is a metal honeycomb structure formed with a plurality of honeycomb holes, the ozone filtering module (14) is provided with a surface coating for catalyzing the decomposition of ozone, the air suction device (15) is an axial flow fan, and the axial flow fan and the ozone filtering module (14) are respectively mounted on two sides of a mounting bracket of the axial flow fan, and the mounting bracket is fixedly mounted in the indoor unit.

15. The air treatment equipment according to claim 13, wherein the air pipe is a wall penetrating pipe embedded in a wall hole, the outer pipe further comprises a mounting sleeve (18) sleeved outside the dust collecting pipe (5), the mounting sleeve (18) is embedded in the wall hole in a mounting wall (27), the outer end of the mounting sleeve (18) penetrates through the wall hole, the inner end of the mounting sleeve is provided with a peripheral flange attached to the inner wall surface of the mounting wall, the indoor machine body comprises an outer cover (17), and the outer cover (17) is fixedly connected with the peripheral flange of the mounting sleeve (18).

16. An air treatment device according to claim 15, wherein the outer axial end of the mounting sleeve (18) is provided with an outer axial end stop (28), the outer ends of the dust collection tube (5), the switching sleeve (2) and the inner tube (1) abutting the outer axial end stop (28); the air treatment equipment also comprises an inner end positioning sleeve (29), and the inner end positioning sleeve (29) is embedded into the inner shaft end of the mounting sleeve (18) to axially position the dust collecting pipe (5), the flow guide sleeve (3) and the inner pipe (1).

17. The air treatment device according to claim 15, wherein the mounting sleeve (18) is installed in an inclined mode, the inner shaft end of the mounting sleeve (18) is high relative to the outer shaft end, the horizontal lifting angle is 3-5 degrees, the wall thickness of the mounting wall (27) is not smaller than 25cm, and the hole diameter of a wall hole for installing the mounting sleeve (18) is not larger than 15 cm.

18. The air treatment apparatus as claimed in claim 15, wherein a primary baffle (20) and/or a primary screen (19) is further installed at an outer axial end of said installation sleeve (18), and said purified air outlet is opened on an outer cover (17) of said indoor unit body, and a grill cover (172) is detachably installed to said purified air outlet, so that said air suction device (15) and said air cleaning device installed in said outer cover (17) can be taken out from said purified air outlet.

19. An air treatment device according to claim 1, wherein said air suction means (15) is a single axial fan, said clean air outlet and axial fan being axially aligned to the inner axial end of said air duct.

An air treatment system of comprising a mounting wall (27) provided with a wall opening and an air treatment device according to any of of claims 1 to 19, the air duct of the air treatment device being embedded as a wall penetrating duct in the wall opening.