CN105333556B - A full-heat fresh air exchanger capable of internal circulation and purification of air - Google Patents

Abstract

A total heat fresh air exchanger capable of internally circulating and purifying air comprises a shell, an air filtering device, a heat exchanger and an air supply device, wherein the air filtering device is provided with an outdoor air inlet part and an indoor air inlet part; the heat exchanger is matched with the air supply device; the air filtering device, the heat exchanger and the discharging device are arranged in the shell in sequence; the air supply device comprises a first fan and a second fan; the air conditioner also comprises a switching device and an exhaust switching device, and in the first working mode, indoor air and outdoor air are filtered and exchange heat, the indoor air is exhausted to the outdoor, and the outdoor air is exhausted to the indoor; in the second working mode, the indoor air enters the filtering mode, the outdoor air enters the filtering mode, the indoor air and the outdoor air are all discharged to the indoor space, and the outdoor air enters the filtering mode to supplement fresh air; the indoor air is enabled to be fresh and healthy, the effect of the wind paths of the parallel double fans can be fully utilized, and the energy is saved and the efficiency is high.

Description

A full-heat fresh air exchanger capable of internal circulation and purification of air

technical field

The invention relates to an indoor air and an indoor air purification device.

Background technique

In the current prior art, a total heat exchanger includes a shell, a heat exchange base heat exchanger, and an air supply device. The heat exchange base has an outdoor air intake portion and an indoor air intake portion; the heat exchanger is in the shape of a rhombus, etc. The heat exchanger has a first passage and a second passage, and the outdoor air intake part and the indoor air intake part communicate with the first and second passages respectively; the heat exchanger cooperates with the air supply device; the air filter device, the heat exchanger and the discharge device are sequentially arranged in the housing. The problem is: single function, such as heat exchange between outdoor air and indoor air, outdoor air enters the room, and indoor air is discharged outside; in the case of bad external environment, or by closing the outdoor air inlet to prevent pollution or heat exchanger condensation unsafe. However, it is equivalent to the shutdown of the heat exchanger, which does not play the role of ventilation and heat exchange. Indoor air will become cloudy and unhealthy after a long time.

Contents of the invention

The object of the present invention is to provide a total heat fresh air exchanger capable of purifying air by internal circulation, which has multiple working modes, keeps indoor air fresh, and is easy to operate. Especially in the harsh external environment, that is, when the indoor and outdoor temperature difference is large or the outdoor air is polluted, the air volume entering the outdoors is reduced at this time, but the air volume entering the room is greatly increased, which can not only dry the condensation water produced by the heat exchanger to ensure safety, And ensure that there is still fresh air and fresh oxygen in the room and the room is under positive pressure, and increase the amount of air purified by the internal circulation to make up for the shortage of fresh air and ensure that the indoor air is fresher and healthier. It can also make full use of the effect of parallel double fans, saving energy and high efficiency.

The present invention is achieved in the following way: a full-heated fresh air exchanger capable of purifying air by internal circulation, including a shell, an air filter device, a heat exchanger device and an air supply device, and the air filter device has an outdoor air intake part and an indoor air inlet. The air intake part; the heat exchanger device has a first channel and a second channel, and the outdoor air intake part and the indoor air intake part communicate with the first and second channels respectively; the heat exchanger device cooperates with the air supply device; the air The filter device, the heat exchanger device and the air supply device are sequentially arranged in the housing; the special feature is that the air supply device includes a first fan and a second fan;

It also includes a wind path switching device and an exhaust switching device,

The air path switching device is arranged between the heat exchanger device and the air supply device;

The exhaust switching device is arranged on the air supply device;

The air path switching device is opposite to the first channel, and the exhaust air switching device closes the air outlet end of the air outlet pipe of the second fan, and the second fan communicates with the air outlet pipe of the first fan, which is in the first working state, and the fresh air Internal circulation purification state;

In the state of micro-fresh air internal circulation and purification, the switching device is reversed, the first channel is connected with the first fan, the second channel is connected with the second fan, and the first channel is isolated from the second channel; the exhaust air switching device connects the first and second channels. The connecting part of the second blower fan is closed, and the air outlet pipe of the second blower blower is conducted; it is the second working state, the fresh air state.

The above-mentioned total heat fresh air exchanger capable of internal circulation and purification of air is special in that: the air path switching device includes an air path switching plate and an air path switching frame;

The air path switching frame includes a first opening, a second opening, and a third opening;

The first channel of the heat exchanger device communicates with the first fan as the second air outlet channel, and the second channel communicates with the second fan as the first air outlet channel;

The first opening is connected with the second air outlet channel, the second opening communicates with the first air outlet channel and the second air outlet channel, and communicates with the air inlet side of the first fan and the second fan, and the third opening communicates with the first fan. The air outlet channel is opposite and connected to the air inlet side of the second fan;

In the fresh air internal circulation purification state, the air path switching plate is fitted with the first opening, and there is a gap between the lower end of the air path switching plate and the lower end of the first opening; in the fresh air state, the air path switching plate and the second opening The opening fits, and the second opening is closed;

The air path switching plate is arranged in the second air outlet channel.

The above-mentioned full-heat fresh air exchanger capable of purifying air by internal circulation is special in that: the air filter device includes an air path structure for air purification and an air purification device,

There are outdoor air interface, indoor air interface, outdoor air filter chamber, indoor air filter chamber and heat exchange installation position on the air inlet end plate of the air inlet end of the wind passage structure of the air inlet purification, and the heat exchanger device is arranged on At the heat exchange installation position, the outdoor air filter cavity communicates with the first channel of the heat exchanger device, and the first channel communicates with the second outlet channel; the indoor air filter cavity communicates with the second channel of the heat exchanger, and the second channel communicates with the second channel of the heat exchanger. The first air outlet channel is connected.

The above-mentioned full-heat fresh air exchanger capable of purifying air by internal circulation is special in that: the air filter device includes an air path structure for air purification and an air purification device,

There are outdoor air interface, indoor air interface, outdoor air filter chamber, indoor air filter chamber and heat exchange installation position on the air inlet end plate of the air inlet end of the wind passage structure of the air inlet purification, and the heat exchanger device is arranged on At the heat exchange installation position, the outdoor air filter cavity communicates with the first channel of the heat exchanger device, and the first channel communicates with the second outlet channel; the indoor air filter cavity communicates with the second channel of the heat exchanger, and the second channel communicates with the second channel of the heat exchanger. The first air outlet channel is connected;

The air path switching frame body and the air path for air inlet and purification are integrally constructed to form a casing.

The above-mentioned full-heat fresh air exchanger capable of purifying air by internal circulation is special in that: the air path switching plate is an arc-shaped damper plate structure, which is driven and controlled by a stepping motor.

Both ends of the arc-shaped damper plate are provided with fan-shaped frame plates, and there are shaft holes on the fan-shaped frame plates;

There is a motor installation position on the air path switching frame;

The stepping motor is arranged in the motor installation position, the fan-shaped frame plate is pivotally connected with the housing, and the stepping motor and the driving frame plate rotate;

In the state of fresh air internal circulation and purification, the arc-shaped damper plate is fitted with the first opening, and there is a gap between the lower end of the arc-shaped damper plate and the lower end of the first opening; Fits with the second opening.

The above-mentioned full-heat fresh air exchanger capable of purifying air by internal circulation is special in that: the exhaust air switching device includes an exhaust air switching board, a driving stepping motor, and an exhaust air switching frame;

The exhaust switching frame includes a first exhaust opening, a second exhaust opening, a third exhaust opening, a fourth exhaust opening, and a fifth exhaust opening;

The first exhaust opening is connected to the air outlet side of the second fan, the second exhaust opening is connected to the outdoor exhaust port, the third exhaust opening is connected to the first fan outlet, and the fourth exhaust opening is connected to the indoor air outlet. The exhaust port is connected, and the fifth exhaust opening makes the air outlet side of the first fan communicate with the air outlet side of the second fan;

The exhaust switching frame is composed of a first frame and a second frame, the first frame cooperates with the first fan, and the second frame cooperates with the second fan;

The exhaust switching plate is pivotally connected to the intersection of the air outlet of the second fan and the first exhaust opening. In the first working state, the exhaust switching plate closes the fifth exhaust opening; in the second working state, the exhaust switching The plate closes the second opening for the exhaust air.

The above-mentioned total heat fresh air exchanger capable of internally circulating and purifying air is special in that: the air supply device includes a first volute, a first volute, a first centrifugal fan, a second volute, The second worm plate, the second centrifugal wind wheel and the motor;

The motor is a double shaft extension motor.

The above-mentioned full-heat fresh air exchanger capable of internal circulation and purification of air is special in that: the first volute and the first exhaust switching frame are integrally constructed, the second volute and the second exhaust The switching frame is integrally constructed;

There is a first lower half air outlet pipe on the first volute communicating with the first volute, and a second lower half air outlet pipe on the first volute;

The second volute has a second upper half air outlet pipe communicating with the second volute, and the second upper half air outlet pipe is arranged on the second volute; the first upper half air outlet pipe and the second upper half air outlet pipe connected through the fifth exhaust opening;

The exhaust switching device is arranged at the intersection of the second volute air outlet and the second upper half of the air outlet pipe, and cooperates with the second upper half of the air outlet pipe and the air guide duct;

The first volute is engaged with the first volute, the second volute is engaged with the second volute, the first and second volutes are attached, the first centrifugal fan is set in the first volute, and the motor is set in the In the first volute, one shaft extension is fixedly connected with the first centrifugal wind wheel, and the other shaft extension passes through the first volute plate and the second volute plate and extends into the second volute case and is fixedly connected with the second centrifugal wind wheel.

The exhaust switching plate is pivotally connected to the intersection of the second volute air outlet and the second upper half of the air outlet pipe. In the second state, the exhaust air switching plate closes the second upper half of the air pipe; in the first state, the exhaust air The switching plate closes the air duct.

The present invention is an all-heating fresh air exchanger capable of purifying air by internal circulation. Due to the adoption of such a structure, multiple working modes can be switched; in the first working mode, the indoor and outdoor air are filtered and exchanged, and the indoor air is discharged to the outside. , the outdoor is discharged to the indoor; the second working mode, the indoor enters the filter, the outdoor air enters the filter, the indoor and outdoor air are all discharged to the indoor, and the outdoor air enters to supplement the fresh air. The second working mode is turned on when the external environment is harsh (when the indoor and outdoor temperature difference is large or the outdoor air is polluted), at this time, the air volume entering the outdoor is reduced, but the air volume entering the room is greatly increased. Dew, to ensure safety, and to ensure that there is still fresh air and fresh oxygen in the room and the room is under positive pressure, and the amount of air purified by the internal circulation is increased to make up for the lack of fresh air reduction, ensuring that the indoor air is fresh and healthy.

Description of drawings

Fig. 1 is a front view of the present invention.

Fig. 2 is the A-A view of Fig. 1 .

Fig. 3 is a BB view of Fig. 1 .

Fig. 4 is a CC view of Fig. 1 .

Fig. 5 is a front view of the present invention without a casing.

Fig. 6 is one of the three-dimensional exploded views of the present invention.

Fig. 7 is the second perspective exploded view of the present invention.

Fig. 8 is a perspective view of the casing of the present invention.

Fig. 9 is one of the three-dimensional exploded views of the combination of the first blower and the second blower in the present invention.

Fig. 10 is the second perspective exploded view of the combination of the first fan and the second fan in the present invention.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings.

As shown in Figure 1, Figure 2, and Figure 5, a full-heat fresh air exchanger capable of purifying air by internal circulation includes a housing 1, an air filter device 2, a heat exchanger device 3, and an air supply device 4, and the air filter device 2 There is an outdoor air inlet and an indoor air inlet; the heat exchanger device 3 is hexagonal, or the heat exchanger device 3 includes a front plane, a rear plane, a top plane, a bottom plane and two angular end faces, and the heat exchange There are a first passage and a second passage on the device 3, and the heat exchanger device 3 is a known technology; the outdoor air intake part and the indoor air intake part communicate with the first and second passages respectively; The wind device 4 cooperates; the air filter device 2 , the heat exchanger device 3 and the air supply device 4 are sequentially arranged in the shell 1 .

The air blower 4 includes a first fan 5 and a second fan 6;

It also includes a wind path switching device 7 and an exhaust switching device 8,

The wind path switching device 7 is provided with an air outlet end of the first channel;

The exhaust switching device 8 is arranged in the outlet pipe of the second fan 6; the outlet pipes of the first and second fans 5 and 6 are connected;

The wind path switching device 7 is opposite to the first channel, which is in a state of slightly fresh air. The exhaust air switching device 8 closes the air outlet end of the air outlet pipe of the second fan 6, and the outlet pipe of the second fan 6 and the first fan 5 connected;

In the state of slightly fresh air, the wind path switching device 7 is overturned, the first channel is communicated with the first fan 5, and the second channel is communicated with the second fan 6; the exhaust switching device 8 connects the first and second fans 5, 6 The connecting part is closed, and the outlet pipe of the second blower fan 6 is conducted; it is called the fresh air state.

As shown in Fig. 6, Fig. 7 and Fig. 8, the air filter device 2 includes an air inlet cleaning component 21 and an air cleaning device (not shown in the figure),

As shown in Figure 8, the air inlet end plate of the air inlet end of the air inlet purification component 21 has an outdoor air interface 211, an indoor air interface 212, an outdoor air filter cavity 213, an indoor air filter cavity 214 and a heat exchange installation position 215 The outdoor air interface 211 communicates with the outdoor air filter cavity 213, and the indoor air interface 212 communicates with the indoor air filter cavity 214;

The heat exchanger device 3 is arranged on the heat exchange installation position 215, and the wall panels of the outdoor air filter chamber 213 and the indoor air filter chamber 214 and the heat exchanger device 3 form an outdoor air guide chamber 218 and an indoor air guide chamber 219 ;

The outdoor air interface 211, the outdoor air filter cavity 213, the outdoor air guide cavity 218, the first channel and the second air outlet channel 2172 of the heat exchanger device 3 are connected in sequence;

The wind path switching device 7 is arranged in the second air outlet channel 2172;

The indoor air interface 212, the indoor air filter chamber 214, the indoor air guide chamber 219, the second channel of the heat exchanger device 3 and the first air outlet channel 2171 are connected in sequence.

The air path switching device 7 includes a stepping motor 71, an arc-shaped damper plate 72 and an air path switching frame 73,

As shown in FIG. 8 , the air path switching frame 73 includes a first opening 731 , a second opening 732 , a third opening 733 and a motor installation position 734 ;

The two ends of the arc-shaped damper plate 72 are provided with fan-shaped frame plates 721, and there are shaft holes on the fan-shaped frame plates 721;

The stepping motor 71 is arranged in the motor installation position, the fan-shaped frame plate 721 is pivotally connected with the air path switching frame 73, and the stepping motor 71 drives the fan-shaped frame plate to rotate;

The first opening 731 of the air path switching frame 73 is connected to the first channel 2171, the second opening 732 is connected to the second channel 2172, and the third opening 733 is connected to the first and second channels 2171 and 2172;

In the clean air internal circulation purification state, the arc-shaped damper plate 72 fits with the second opening, and there is a gap between the lower end of the arc-shaped damper plate 72 and the lower end of the second channel 2172; The door panel fits into the third opening 733 .

The channel connecting the first channel of the heat exchanger device 3 with the first fan 5 is the second outlet channel 2172, and the channel connecting the second channel with the second fan 6 is the first outlet channel 2171;

The first opening 731 is connected to the second air outlet channel 2172, and the second opening 732 communicates the first air outlet channel 2171 and the second air outlet channel 2172, and communicates the air inlet sides of the first fan 5 and the second fan 6 , the third opening 733 is opposite to the first air outlet channel 2171 and connected to the air inlet side of the second fan;

In the fresh air internal circulation purification state, the air path switching plate is fitted with the first opening 731, and there is a gap between the lower end of the air path switching plate and the lower end of the first opening 731; The second opening 732 fits, and the second opening 732 is closed;

The state shown in Figure 2, Figure 3, and Figure 4 is the state of slightly new air. In the state of slightly fresh air, the arc-shaped damper plate 72 fits with the first opening 731, and there is a gap between the lower end of the arc-shaped damper plate 72 and the lower end of the first opening;

Under the slightly fresh air state shown in Fig. 2, Fig. 3, and Fig. 4, the arc-shaped damper plate 72 rotates 90 degrees clockwise, and the arc-shaped damper plate 72 is fitted with the second opening 732; it is a fresh air state.

The air supply device 4 includes a first volute 51, a first worm plate 52, a first centrifugal fan 53, a second volute 61, a second worm plate 62, a second centrifugal fan 63 and a motor 9;

The motor 9 is a biaxial extension motor;

As shown in Figure 9 and Figure 10, the first volute 51 is integrated with the first exhaust switching frame, and the second volute 61 is integrated with the second exhaust switching frame;

There is a first lower half air outlet pipe 511 on the first volute 51 communicating with the first volute 51, and a second lower half air outlet pipe 611 on the first volute 61;

The second volute 61 has a second upper half air outlet pipe 612 communicated with the second volute 62, and the second upper half air outlet pipe 512 is arranged on the second volute 61; The second upper half of the air outlet pipe 612 is connected through the air guide channel 614;

The exhaust switching device 8 is arranged at the intersection of the second volute 62 air outlet and the second upper half of the air outlet pipe 612, and the exhaust air switching device 8 cooperates with the second upper half of the air outlet pipe 612 and the air guide channel 614;

The first volute 53 is engaged with the first volute 51, the second volute 63 is engaged with the second volute 61, the first and second volutes 53, 63 are attached, and the first centrifugal fan 53 is arranged at the second In a volute 51, the motor 9 is arranged in the first volute 51, one shaft extension is fixedly connected with the first centrifugal wind wheel 53, and the other shaft extension passes through the first worm plate 53 and the second worm plate 63 and extends into the first The second volute 61 is fixedly connected with the second centrifugal fan 63 .

The exhaust switching device 8 includes an exhaust switching board 81 and a stepper motor (not shown in the figure); the exhaust switching device 8 includes an exhaust switching board 81, a driving stepping motor, and an exhaust switching frame ;

The exhaust air switching frame includes a first exhaust air switching frame and a second exhaust air switching frame.

The exhaust switching frame includes a first exhaust opening, a second exhaust opening, a third exhaust opening, a fourth exhaust opening, and a fifth exhaust opening;

The first air exhaust opening is connected to the air outlet side of the second fan 6, the second air exhaust opening is connected to the outdoor exhaust port, the third air exhaust opening is connected to the air outlet side of the first fan 5, and the fourth air exhaust opening is It is connected to the indoor exhaust port, and the fifth exhaust opening makes the air outlet side of the first fan communicate with the air outlet side of the second fan;

The exhaust switching frame is composed of a first frame and a second frame, the first frame cooperates with the first fan 5, and the second frame cooperates with the second fan 6;

The exhaust switching plate 81 is pivotally connected to the intersection of the air outlet of the second fan 6 and the first exhaust opening. In the first working state, the exhaust switching plate 81 closes the fifth exhaust opening; in the second working state, The air exhaust switching plate closes the second air exhaust opening.

The exhaust switching plate 81 is pivotally connected to the intersection of the air outlet of the second volute 61 and the second upper half of the air outlet pipe 612. In the first state, that is, the internal circulation and purification state of the slight fresh air, the exhaust switching plate 81 closes the second The air outlet end of the second upper half of the air duct 612; the second state, that is, the fresh air state, the air exhaust switching plate 82 closes the air guide channel 614.

When the present invention is working, the first working state is under the state of slight fresh air. As shown in Figure 2 and Figure 4, the outdoor enters the second air outlet channel 2172 through the outdoor air interface 211, the outdoor air filter chamber 213, the outdoor air guide chamber 218, and the first channel of the heat exchanger device 3, and then the circular arc The gap between the damper plate 72 and the lower end of the first opening enters the first fan 5 and is discharged indoors; the air path switching device 7 closes the air outlet of the second fan 6;

At the same time, as shown in Figure 2 and Figure 3, the indoor air enters the first air outlet channel 2171 through the second channel of the indoor air interface 212, the indoor air filter cavity 214, the indoor air guide cavity 219, and the heat exchanger device 3. Then enter the second blower fan 6 and discharge it indoors through the air guide channel 614 and the air outlet of the first blower fan 5; the air guide channel is the fifth opening of the exhaust air;

At this time, the air volume entering the outdoor area decreases, but the air volume entering the room increases greatly.

First: It can quickly dry the condensed water produced by the heat exchanger, ensure safety, and prevent electrical short circuits.

Second: Make sure that there is still fresh air and fresh oxygen in the room and the room is under positive pressure, and ensure that the fresh air entering the room is filtered. To prevent indoor negative pressure, the air is not filtered, but directly enters the room through gaps such as windows and doors.

Third: Increase the amount of air purified by the internal circulation, make up for the lack of fresh air reduction, and ensure fresh and healthy indoor air.

Fourth: The state that the first fan and the second fan are connected in this working mode, that is, the two fans are connected in parallel to absorb air, which reduces loss, improves efficiency, and reduces energy consumption.

In the first working state, the air volume entering the outdoors is reduced at this time, but the air volume entering the room is greatly increased, which can not only dry the condensation water generated by the heat exchanger, ensure safety, but also ensure that there is still fresh air and fresh oxygen in the room. The room is under positive pressure, and the amount of air purified by the internal circulation is increased.

The second working state is under the state of fresh air. As shown in Figure 2 and Figure 5, in the state of Figure 2, the arc-shaped damper plate 72 rotates 90 degrees clockwise, and the arc-shaped damper plate 72 fits with the third opening 733; the air path switching device 7 closes the air guide channel 614;

The outside enters the second air outlet channel 2172 through the outdoor air interface 211, the outdoor air filter chamber 213, the outdoor air guide chamber 218, and the first channel of the heat exchanger device 3, and enters the first fan 5 to be discharged indoors;

The indoor air enters the first air outlet channel 2171 through the indoor air interface 212, the indoor air filter cavity 214, the indoor air guide cavity 219, and the second channel of the heat exchanger device 3; then enters the second fan 6 and is discharged outdoors.

When switching between the slightly new air state and the brand new air state, the wind path switching device 7 and the exhaust air switching device 8 are linked.

What has been described above are only preferred embodiments of the present invention. It should be noted that, for those skilled in the art, some improvements and modifications can be made without departing from the principle of the present invention, which are also regarded as the protection scope of the present invention.

Claims (7)

1. it is a kind of can in circularly purifying air total-heat fresh-air exchanger, including shell, air filter, heat exchanger device And air-supply arrangement, there are outdoor air intake section and room air intake section on air filter；Have on heat exchanger device One passage and second channel, outdoor air intake section are connected with first passage, and room air intake section is connected with second channel；Heat Exchanger assembly coordinates with air-supply arrangement；Air filter, heat exchanger device and air-supply arrangement are set gradually in housing； It is characterized in that：The air-supply arrangement includes the first wind turbine and the second wind turbine；

A wind path switching device and air draft switching device are further included,

The wind path switching device is arranged between heat exchanger device and air-supply arrangement；

Air draft switching device is arranged on air-supply arrangement；

Wind path switching device is opposite with first passage, and air draft switching device is by the outlet air end seal of the discharge pipe of the second wind turbine It closes, the second wind turbine is connected with the discharge pipe of the first wind turbine, is the first working condition, circularly purifying state in micro- fresh air；

In micro- fresh air under circularly purifying state, the overturning of wind path switching device connects first passage with the first wind turbine, and second is logical Road is connected with the second wind turbine, and first passage completely cuts off with second channel；Air draft switching device seals first, second wind turbine connectivity part It closes, the discharge pipe conducting of the second wind turbine；For the second working condition, all-fresh air state；

The wind path switching device includes wind path switch boards and wind path switching framework；

The wind path switching framework includes the first opening, the second opening, the 3rd opening；

The passage that the first passage of the heat exchanger device is connected with the first wind turbine is the second air-out passage, second channel and the The passage of two wind turbines connection is the first air-out passage；

First opening is connected with the second air-out passage, and the second opening communicates the first air-out passage and the second air-out passage, and Communicate the inlet air side of the first wind turbine and the second wind turbine, the 3rd opening is opposite with the first air-out passage, and enters with the second wind turbine Wind side is connected；

In micro- fresh air under circularly purifying state, wind path switch boards are chimeric with the described first opening, the lower end of wind path switch boards with There is gap in the lower end of first opening；Under all-fresh air state, wind path switch boards are chimeric with the second opening, the second closure of openings；

The wind path switch boards are arranged in the second air-out passage.

2. it is according to claim 1 it is a kind of can in circularly purifying air total-heat fresh-air exchanger, it is characterised in that：It is described Air filter includes the wind path construction and air cleaning unit of intake air cleaning,

There are outdoor air interface, room air interface, room on the air inlet end plate of the air intake of the wind path construction of the intake air cleaning Outer air filter chamber, indoor air filtration chamber and heat exchange installation position, the heat exchanger device are arranged on heat exchange installation position, room Outer air filter chamber is connected with the first passage of heat exchanger device, and first passage is connected with the second air-out passage；Room air Filter chamber is connected with the second channel of heat exchanger, and second channel is connected with the first air-out passage.

3. it is according to claim 1 it is a kind of can in circularly purifying air total-heat fresh-air exchanger, it is characterised in that：It is described Air filter includes the wind path construction and air cleaning unit of intake air cleaning,

There are outdoor air interface, room air interface, room on the air inlet end plate of the air intake of the wind path construction of the intake air cleaning Outer air filter chamber, indoor air filtration chamber and heat exchange installation position, the heat exchanger device are arranged on heat exchange installation position, room Outer air filter chamber is connected with the first passage of heat exchanger device, and first passage is connected with the second air-out passage；Room air Filter chamber is connected with the second channel of heat exchanger, and second channel is connected with the first air-out passage；

Wind path switches framework and the wind path of intake air cleaning constructs the construction being integrated, and forms a housing.

4. it is according to claim 1 it is a kind of can in circularly purifying air total-heat fresh-air exchanger, it is characterised in that：It is described Wind path switch boards are arc-shaped air door plate structure, are controlled by driving stepper motor,

Arc-shaped air door plate is provided at both ends with fan-shaped frame plate, has axis hole on fan-shaped frame plate；

There is motor installation position in the wind path switching framework；

Stepper motor is arranged in motor installation position, and fan-shaped frame plate is pivotally connected with housing, and driving stepper motor sector frame plate rotates；

In micro- fresh air under circularly purifying state, arc-shaped air door plate is chimeric with the described first opening, under arc-shaped air door plate There are gap in end and the lower end of the first opening；Under all-fresh air state, arc-shaped air door plate is chimeric with the second opening.

5. it is according to claim 1 it is a kind of can in circularly purifying air total-heat fresh-air exchanger, it is characterised in that：It is described Air draft switching device includes air draft switch boards, a Driving Stepping Motor, air draft switching framework；

Framework is open including air draft first, air draft second is open, air draft the 3rd is open, air draft the 4th is open for the air draft switching, Air draft the 5th is open；

The opening of air draft first is connected with the second wind turbine air side, air draft second is open is connected with outdoor exhaust outlet, air draft the Three openings are connected with the first wind turbine air side, the opening of air draft the 4th is connected with indoor exhaust mouth, and the opening of air draft the 5th makes first Wind turbine air side and the second wind turbine air side communicate；

The air draft switching framework forms for the first framework and second framework, and the first framework coordinates with the first wind turbine, second framework Coordinate with the second wind turbine；

The air draft switch boards are with being arranged on the air outlet of the second wind turbine and the intersection pivot joint of the opening of air draft first, the second work shape State, the closing air draft the 5th of air draft switch boards are open；First working condition, the closing air draft second of air draft switch boards are open.

6. it is according to claim 5 it is a kind of can in circularly purifying air total-heat fresh-air exchanger, it is characterised in that：It is described Air-supply arrangement includes the first spiral case, the first snail plate, the first centrifugal wind wheel, the second spiral case, the second snail plate, the second centrifugal wind wheel and electricity Machine；

The motor is motor for double-ended drive.

7. it is according to claim 6 it is a kind of can in circularly purifying air total-heat fresh-air exchanger, it is characterised in that：It is described First spiral case and the first air draft switching framework are integrated construction, and the second spiral case and the second air draft switching framework are integrated construction；

There is the first lower half discharge pipe to be communicated with the first spiral case on first spiral case, there is the second lower half discharge pipe on the first spiral case；

Second spiral case has the second upper half discharge pipe to be communicated with the second spiral case, there is the first upper half discharge pipe on the second spiral case；The One upper half discharge pipe and the second upper half discharge pipe are open by the air draft the 5th to be connected；

The air draft switching device is arranged on the second spiral case air outlet and the second upper half discharge pipe intersection, and goes out with the second upper half Air hose and wind guide channel cooperation；

First snail plate and the first spiral case fasten, and the second snail plate and the second spiral case fasten, the first snail plate and the fitting of the second snail plate, and first Centrifugal wind wheel is arranged in the first spiral case, and motor is arranged in the first spiral case, and an axis is stretched to be fixedly connected, separately with the first centrifugal wind wheel One axis extends through the first snail plate and the second snail plate is stretched into the second spiral case and is fixedly connected with the second centrifugal wind wheel；

The air draft switch boards are pivotally connected with being arranged on the second spiral case air outlet with the second upper half discharge pipe intersection, the first work shape State, circularly purifying state in micro- fresh air, air draft switch boards close the second upper half air hose；Second working condition, all-fresh air state, row Wind switch boards close wind guide channel.