CN208936416U - Channel switching device and fresh air system - Google Patents

Abstract

The utility model discloses a kind of channel switching device and fresh air system, channel switching device include chamber and with the first entrance of chamber, first outlet, second entrance and second outlet；It is formed with the first passage that can be connected to first entrance and first outlet in chamber, and the second channel of second entrance and second outlet can be connected to, the first valve is provided in first passage, the second valve is provided in second channel；It is additionally provided with the third channel of connection first entrance and second outlet in chamber, third valve is provided in third channel, third valve is arranged between first passage and second channel；It further include transformational structure, transformational structure is configured to close third valve while driving the first valve and the second valve is opened, and third valve is opened while driving the first valve and the second valve is closed.Channel switching device structure provided by the utility model arranges advantages of simple, realizes the switching in air duct to the control of three valves by transformational structure, structure is simple, facilitates control.

Description

Channel switching device and fresh air system

Technical field

The utility model relates to ventilating system technical field, especially channel switching device and include its fresh air system.

Background technique

With the development of urbanization, people's lives level is continuously improved, requirement of the modern urban human to living environment Also increasingly pay attention to, have a kind of new blower of heat exchange in existing ventilating system, there are two independent wind to lead to for the new blower of the heat exchange Road is divided into fresh air channel, air exhaust passage.A kind of working method: fresh air channel is to realize outdoor fresh air introducing interior, and air draft is logical Road is that indoor waste air is discharged to outdoor, another working method: realizing the function of recycling in room air, the switching of working method It is controlled using valve.

A kind of total-heat exchanger is disclosed, in the prior art to ensure that total-heat exchanger can the outer wind mode and interior of changing indoors It independently works and can toggle under circulation pattern, just need to consider to control different wind by selecting air door in design The opening and closing in hole.Air door includes third air door and the second air door, and third air door is set at the first air holes, can open the first air holes Or closure, the position of the second air door can switch between the second air holes and third air holes；When air door is in the first working condition, Third air door can open the first air holes, meanwhile, the position of the second air door switches at third air holes, third air holes is closed, Second air holes is opened；After foul indoor air enters second entrance, successively pass through the second air holes and the first heat exchange wind channel, First entrance is reached, the exterior space is finally discharged to；After outdoor fresh air enters second outlet, successively pass through the first air holes, the One dedusting filter and the first heat exchange wind channel reach first outlet, are eventually directed into the interior space；When air door is in When the second working condition, third air door closes the first air holes, meanwhile, the position of the second air door switches at the second air holes, will Third air holes is opened in the closing of second air holes, and total-heat exchanger opens interior circulation pattern at this time, and foul indoor air enters second After entrance, successively pass through third air holes, the second dedusting filter and the second heat exchange wind channel, reaches first outlet, finally Clean air is introduced into the interior space.The principle of linkage rod slide block mechanism is utilized in the transmission component of the utility model, only A motor is needed just to can control the opening and closing of multiple air doors, it is ensured that opening and closing requirement of the air door under different working condition, so that Manufacturing cost substantially reduces.

In order to realize that a motor just can control the opening and closing of multiple air doors, above-mentioned utility model is by the second air holes and third wind Hole using being set side by side up and down, using the opening and closing of both airdoor controls, although design is so that manufacturing cost drops significantly in this way It is low, but the thickness of total is become larger, it has not been convenient to it installs, reduces matched type；It is most of in the prior art simultaneously By wind direction switch unit in the new blower of heat exchange, reduce whole flexibility.

Utility model content

In view of this, one of the purpose of this utility model is to provide a kind of channel switching device, it is thick to solve existing structure The technical issues of degree or width become larger, reduce matched type.

In order to achieve the above objectives, the utility model adopts the following technical solution: a kind of channel switching device, and device includes chamber Room and with the first entrance of chamber, first outlet, second entrance and second outlet；Can be connected to by being formed in chamber The first passage of one entrance and first outlet, and the second channel of second entrance and second outlet, first passage can be connected to It is inside provided with the first valve of the on-off for controlling first passage, the on-off for controlling second channel is provided in second channel The second valve；It is additionally provided with the third channel of connection first entrance and second outlet in chamber, is provided with and is used in third channel The third valve of the on-off of third channel is controlled, third valve is arranged between first passage and second channel；It further include transformational structure, Transformational structure is configured to close third valve while driving the first valve and the second valve is opened, and the first valve and the second valve is being driven to close Third valve is opened while closing.

Preferably, the chamber is divided into first chamber and second chamber, shape in the first chamber by the third valve At the first passage, the second channel is formed in the second chamber；

The first valve setting is divided into third sub-chamber, the 4th in the first chamber, and by the first chamber Sub-chamber, the first outlet are connected to the 4th sub-chamber, and the first entrance is connected to the third sub-chamber；With/ Or,

The second valve setting is divided into the first sub-chamber, second in the second chamber, and by the second chamber Sub-chamber, the second outlet are connected to first sub-chamber, and the second entrance is connected to second sub-chamber；

The third valve is arranged between first sub-chamber and the third sub-chamber.

Preferably, transformational structure includes driving device and transmission mechanism；Transmission mechanism respectively with the first valve, the second valve and The connection of third valve, driving device drives third valve to open or close by transmission mechanism, and drives the first valve and the second valve simultaneously It closes or opens.

Preferably, the first valve includes first baffle, the first air door, and first baffle is equipped with first and crosses air port, the first air door Be rotatablely connected by shaft and first baffle, the output end of transmission mechanism be able to drive the first air door rotate around the axis to open or It closes first and crosses air port；And/or

Second valve includes second baffle, the second air door, and second baffle is equipped with second and crosses air port, and the second air door passes through shaft It is rotatablely connected with second baffle, the output end of transmission mechanism is able to drive the second air door and rotates around the axis to open or close second Cross air port；And/or

Third valve includes third baffle, third air door, and third baffle is equipped with third and crosses air port, and third air door passes through shaft It is rotatablely connected with third baffle, the output end of transmission mechanism is able to drive third air door and rotates around the axis to open or close third Cross air port.

Preferably, the chamber includes the first cavity wall, the second cavity wall, third cavity wall and the 4th cavity wall, wherein described first Cavity wall and second cavity wall are oppositely arranged, and the third cavity wall and the 4th cavity wall are oppositely arranged, the third baffle point It is not connected with first cavity wall and second cavity wall；

The second baffle is connected in second cavity wall or the first cavity wall close to one end of the third valve；And/or The first baffle is connected in second cavity wall or the first cavity wall close to one end of the third valve.

Preferably, first outlet and second entrance are arranged in the first cavity wall, and first entrance and second outlet setting are the In two cavity walls.

Preferably, transmission mechanism includes first connecting rod, second connecting rod；

One end of first connecting rod and the side of third air door are rotatablely connected, and the one of the other end of first connecting rod and the second air door Side rotation connection；

One end of second connecting rod and the other side rotation connection of third air door, the other end of second connecting rod and the first air door Side rotation connection；

The output end of driving device is connect with third air door, and driving device directly drives third air door and rotates around a shaft, Third air door drives first connecting rod, second connecting rod linkage.

Preferably, one end of second connecting rod and the middle part of third air door are rotatablely connected, and the other end of second connecting rod passes through Cross air port and the middle part of the first air door on first baffle are rotatablely connected.

Preferably, installation slot structure is additionally provided in the chamber, the driving device is arranged in the installation slot structure, The installation slot structure is constructed so that the driving device is separated with the first passage, second channel, third channel.

Preferably, the 4th flange is equipped at first outlet；And/or

Second flange is equipped at second entrance；And/or

Third flange is equipped at second outlet；And/or

First access point is equipped with first flange.

Preferably, device includes cabinet, and cabinet forms chamber, first entrance, first outlet, second entrance and second outlet It is arranged on cabinet.

The utility model also announces a kind of fresh air system, and fresh air system includes the new blower of heat exchange and above-mentioned channel switching Device, first entrance are outdoor exhaust outlet, and first outlet is indoor air outlet, and second entrance is indoor return air mouth, second outlet For fresh air air inlet；The exhaust outlet of the new blower of heat exchange is connected to the indoor return air mouth of channel switching device, the new blower of heat exchange Fresh wind port be connected to the indoor air outlet of channel switching device.

The utility model has the following beneficial effects:

Channel switching device structure provided by the utility model arranges advantages of simple, so that overall structure is more compact, leads to The switching that transformational structure realizes air duct to the control of three valves is crossed, structure is simple, facilitates control.

Detailed description of the invention

By referring to the drawings to the description of the utility model embodiment, the above-mentioned and other mesh of the utility model , feature and advantage will be apparent from, in the accompanying drawings:

Fig. 1 shows the overall structure diagram of the channel switching device of the utility model；

Fig. 2 shows the structural schematic diagrams of the utility model inner valve layout；

Fig. 3 shows the utility model air exhaust passage, fresh air channel and interior circulated air channel and moves towards schematic diagram；

Fig. 4 shows the structural schematic diagram of the utility model installation slot structure；

Fig. 5 shows the structural schematic diagram of the utility model transmission mechanism；

Fig. 6 shows the structural schematic diagram of the second valve of the utility model, the first valve；

Fig. 7 shows the status diagram that the utility model third valve is closed, the second valve is opened and the first valve is opened；

Fig. 8 shows the status diagram that the utility model third valve is opened, the second valve is closed and the first valve is closed；

Fig. 9 shows the structural schematic diagram of heat exchange ventilation system in the utility model.

Specific embodiment

The utility model is described below based on embodiment, but the utility model is not restricted to these implementations Example.In order to avoid obscuring the essence of the utility model, there is no narrations in detail for well known method, process, process, element.

In addition, it should be understood by one skilled in the art that provided herein attached drawing be provided to explanation purpose, and What attached drawing was not necessarily drawn to scale.

Unless the context clearly requires otherwise, "include", "comprise" otherwise throughout the specification and claims etc. are similar Word should be construed as the meaning for including rather than exclusive or exhaustive meaning；That is, be " including but not limited to " contains Justice.

In the description of the present invention, it should be understood that term " middle part ", " longitudinal direction ", " transverse direction ", " length ", " width Degree ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " suitable The orientation or positional relationship of the instructions such as hour hands ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " is orientation based on the figure Or positional relationship, be merely for convenience of describing the present invention and simplifying the description, rather than the device of indication or suggestion meaning or Element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as the limit to the utility model System.

In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or Implicitly include at least one this feature.The meaning of " plurality " is at least two, such as two in the description of the present invention, It is a, three etc., unless otherwise specifically defined.

As shown in Figure 1, the channel switching device in the utility model includes cabinet 1, cabinet 1 is using front end-plate, rear end The box-like structure that plate, upper head plate, bottom plate, left side plate, right end plate surround, the interior formation chamber of cabinet, the inner wall of the front end-plate, The inner wall of the inner wall of end plate, the inner wall of left side plate and right end plate respectively constitutes the first cavity wall of the chamber, the second cavity wall, Three cavity walls and the 4th cavity wall.The channel switching device of the utility model is designed using independent case body, can cooperate a variety of different shapeds Number the new blower of heat exchange use, it is flexible for installation, it is versatile.Cabinet 1 is equipped with first outlet, second outlet, first entrance And second entrance, the new blower of the heat exchange of cabinet 1 and a variety of different models is cooperated for convenience, the utility model is also in case The convenient flange connecting with the new blower of heat exchange is equipped at each air port of body 1, specifically, as shown in Figure 1, setting at first outlet There is the 4th flange 24, second entrance is equipped with second flange 22, is equipped with third flange 23 at second outlet, and first access point is equipped with the One flange 21.Wherein, first outlet, second entrance are arranged on the front end-plate of 1 side of cabinet, and second outlet, first entrance are set It sets on the end plate of 1 other side of cabinet, first outlet is opposite with first entrance and is arranged, and second entrance is opposite with second outlet And it is arranged.

As shown in Figure 2 and Figure 3, the utility model further includes third valve 3, the first valve 4, the second valve 5 and transformational structure, third The middle part of the chamber in cabinet 1 is arranged in valve 3, and the second valve 4, the first valve 5 are arranged in cabinet 1, and is located at the two of third valve 3 Side；Third valve 3 separates cabinet 1 for two chambers, and two chambers are respectively first chamber, second chamber, shape in first chamber At first passage, second channel is formed in second chamber, first passage is connected to first entrance and first outlet, second channel connection Second entrance and second outlet.It is closed between first chamber, second chamber not leak out, only pass through the unlatching ability of third valve 3 So that being connected between first chamber and second chamber；The utility model uses and sets the second valve 4, third valve 3, the first valve 5 side by side It sets, can be convenient the valve open and close control of the utility model.

First valve 4 is arranged in the first chamber, and first chamber is two chambers by the first valve 4, and two chambers are respectively the Three sub-chamber, the 4th sub-chamber, and it is closed between third sub-chamber, the 4th sub-chamber do not leak out, only being opened by first valve 4 Opening could to be connected between third sub-chamber, the 4th sub-chamber；First outlet is connected to the 4th sub-chamber, first entrance and the The connection of three sub-chamber, first entrance, third sub-chamber, the 4th sub-chamber, first outlet form one for arranging indoor waste air Outdoor air exhaust passage 001 (first passage) out, the connection and closing of the opening and closing control air exhaust passage 001 of the first valve 4.

Second valve 5 is arranged in second chamber, and second chamber is divided into two chambers by the second valve 5, and two chambers are respectively First sub-chamber, the second sub-chamber, and it is closed between the first sub-chamber, the second sub-chamber do not leak out, only by the second valve 5 Unlatching could to be connected between the first sub-chamber, the second sub-chamber；Second outlet is connected to the first sub-chamber, second entrance with The connection of second sub-chamber, second entrance, the first sub-chamber, form one between second outlet for will be outdoor at the second sub-chamber The indoor fresh air channel 002 (second channel) of Leads to new breeze, opening and closing control fresh air channel 002 connection and closing of the second valve 5.

Third valve 3 is arranged between the first sub-chamber and third sub-chamber, and specifically, third valve 3 is arranged in the first sub- chamber Room and third sub-chamber intersection, first entrance, third sub-chamber, the first sub-chamber, second outlet form one and are used for room Interior air is delivered directly to indoor interior circulated air channel 003 (third channel), and the opening and closing of third valve 3 controls interior circulated air channel 003 connection and closing.

Transformational structure is configured to close the third valve 3 while driving first valve 4 and the second valve 5 is opened, First valve 4 and the second valve 5 is driven to open the third valve 3 while closing.

As shown in figure 3, the transformational structure in the utility model includes driving device 6 and transmission mechanism 7, driving device 6 Output end is connect with the input terminal of transmission mechanism 7, the output end of transmission mechanism 7 respectively with third valve 3, the first valve 4 and second Valve 5 connects, the movement of 6 drive transmission device 7 of driving device so that transmission mechanism 7 drives third valve 3 to open or close, the One valve 4 and the second valve 5 close or open.When the first valve 4 and the second valve 5 are turned off, third valve 3 is opened；When third valve 3 is closed When, the first valve 4 and the second valve 5 are opened；Driving device 6 uses motor in the utility model.

In order to advanced optimize the structure of the utility model, so that overall structure sealing performance is more preferable, increase service life The advantages that, the utility model has also done following optimization design.

As described in Figure 4, installation slot structure 11 is additionally provided in the cabinet 1 of the utility model, installation slot structure 11 is arranged in case The middle part of body 1, the driving device 6 are arranged in the installation slot structure 11, and the installation slot structure 11 is constructed so that institute It states driving device 6 to separate with first passage 001, second channel 002, the third channel 003 in cabinet 1, avoid in these channels Air the electrical component in driving device is impacted, and then influence whole device service life.

As described in Figure 3, the support frame 12 for fixing and supporting driving device 6 is arranged in the lower section for installing slot structure 11, props up Support 12 is arranged on end plate.

As described in Figure 4, in order to facilitate cabling, the side for installing slot structure 11 is equipped with cable-through hole 111.

As described in Fig. 5, Fig. 6, third valve 3 includes third baffle 31, third air door 32, and third baffle 31 primarily serves partition The inner wall of effect, 1 middle part of edge and cabinet of third baffle 31 is tightly connected, and specifically, as described in Figure 2, cabinet 1 is before using The box-like structure that end plate, end plate, upper head plate, bottom plate, left side plate, right end plate surround, cabinet is interior to form chamber, wherein preceding End plate and end plate are oppositely arranged, and left side plate and right end plate are oppositely arranged, third baffle 31 respectively with front end-plate and end plate It is connected, when the utility model is using installation 11 structure of slot structure, the upper edge (orientation shown in Fig. 3) of third baffle 31 and peace The lower end surface of tankage structure 11 is tightly connected.Third baffle 31 is equipped with third and crosses air port, and third air door 32 is mainly used for sealing Third, which crosses air port or opens third, crosses air port, in a preferred embodiment, the output end of the driving device 6 and described the The connection of three air doors 32, the driving device 6 directly drive the third air door 32 around the output shaft of a shaft, such as driving device Rotation, so that third air door 32, which can turn on or off third, crosses air port.In another preferred embodiment, third wind Door 32 is rotatablely connected (not shown) by shaft and third baffle 31.The utility model passes through third air door 32 and third gear Cooperation between plate 31 realizes the opening or closure of third valve 3, further control in circulated air channel 003 conducting with every It is disconnected.

As described in Fig. 5, Fig. 6, the first valve 4 includes first baffle 41, the first air door 42, and first baffle 41 primarily serves partition The inner wall of effect, 1 right side (first chamber) of edge and cabinet of first baffle 41 is tightly connected.Preferably, the first baffle 41 are connected in second cavity wall or the first cavity wall close to one end of the third valve 3, in the embodiment shown in Fig. 5-6, institute It states first baffle 41 to be connected in the first cavity wall close to one end of the third valve 3, is conducive to increase third sub-chamber in this way Interior space facilitates the setting of third valve 3, while can also increase the flow in interior circulated air channel 003.It is set on first baffle 41 There is first to cross air port, the first air door 42 is rotatablely connected by shaft and first baffle 41, and the first air door 42 is mainly used for sealing the One crosses air port or opens first and crosses air port, and the utility model is realized by cooperation between the first air door 42 and first baffle 41 The opening or closure of first valve 4 further controls the conducting and partition of air exhaust passage 001.

As described in Fig. 5, Fig. 6, the second valve 5 includes second baffle 51, the second air door 52, and second baffle 51 primarily serves partition The inner wall of effect, 1 left side (second chamber) of edge and cabinet of second baffle 51 is tightly connected, it is preferable that the second baffle 51 are connected in second cavity wall or the first cavity wall close to one end of the third valve 3, in the embodiment shown in Fig. 5-6, institute It states second baffle 51 to be connected in the first cavity wall close to one end of the third valve 3, design in this way is conducive to increase by the first son The inner space of chamber facilitates the setting of third valve 3, while can increase the flow in interior circulated air channel 003；Second baffle 51 It is equipped with second and crosses air port, the second air door 52 is rotatablely connected by shaft and second baffle 51, and the second air door 52 is mainly used for close Envelope second, which crosses air port or opens second, crosses air port, and the utility model passes through the cooperation between the second air door 52 and second baffle 51 The opening or closure of the second valve 5 are realized, the conducting and partition of fresh air channel 002 are further controlled.

Third baffle 31, first baffle 41 in the utility model, second baffle 51 are the plate that middle part was equipped with air port Shape structure；Specifically, third baffle 31 is made of metal plate, is surrounded by the convenient flanging connecting with cabinet wall；Specifically Ground, first baffle 41 are made of metal plate, are surrounded by the convenient flanging connecting with cabinet wall；Second baffle 51 is using gold Belong to plate to be made, in order to increase opening angle, while second connecting rod 72 being facilitated to drive the second air door 52, be equipped in the middle part of second baffle 51 Bending or bending section towards the second sub-chamber, the convenient installation to second baffle 51, the side of being surrounded by of second baffle 51 Just the flanging being connect with cabinet wall.Third baffle 31, first baffle 41, the air door on second baffle 51, according to the knot of baffle Structure makes adaptation and changes.

As described in Fig. 5, Fig. 6, Fig. 7, Fig. 8, transmission mechanism 7 includes first connecting rod 71, second connecting rod 72；First connecting rod 71 The side of one end and third air door 32 is rotatablely connected, the other end of first connecting rod 71 and the first air door 42 far from first outlet one Side rotation connection；One end of second connecting rod 72 and the other side of third air door 32 are rotatablely connected, the other end of second connecting rod 72 with Second air door 52 is rotatablely connected far from the side of second entrance；The output shaft of driving device 6 is connect with the shaft of third air door 32, Driving device 6, which directly drives third air door 32 and rotates around the axis, realizes the closure and unlatching of third valve 3；The utility model passes through The wobble drive first connecting rod 71 of third air door 32 pushes and pulls the first air door 42, driving second connecting rod 72 pushes and pulls the second air door 52, real The unlatching of existing first valve 4 and the second valve 5 is closed, and structure is simple, easy to operate, can be realized linkage effect well.

The transmission mechanism 7 of the utility model uses pivot link structure, and the open angle of third valve 3 is not by the first valve 4, the The open angle of two valves 5 influences, so that valve opening can maximize when realizing that two channel fore-and-aft distances are smaller in cabinet 1, drop Low pass wind windage, further such that the ratio that the thickness of cabinet 1 can design is relatively thin.

Preferably, one end of second connecting rod 72 and the middle part of third air door 32 are rotatablely connected, and second connecting rod 72 is another It holds the third in third baffle 31 to cross air port and the middle part of the second air door 52 to be rotatablely connected.It designs, on the one hand avoids in this way More apertures, increase the leakproofness of total, and enable to overall structure more compact, save space；It on the other hand can Reduce the deformation of third air door 32, the first air door 52.

Preferably, one end of first connecting rod 71 and the middle part of third air door 32 are rotatablely connected, and are designed, are advantageously reduced in this way Reaction force of the second connecting rod 72 in the middle part of third air door 32, to reduce first connecting rod 71 and second connecting rod 72 in third air door The deformation that 32 middle part active forces generate.

Preferably, the utility model can also increase a reinforcing rib at the middle part of third air door 32, first connecting rod 71 Reinforcing rib on one end and third air door 32 is rotatablely connected, and one end of second connecting rod 72 and the reinforcing rib on third air door 32 rotate Connection, in this way design are conducive to increase the intensity of total, increase service life.

When channel switching device works,

Interior recurrent state, the output shaft of driving device 6 directly drive the rotation of third air door 32, and third valve 3 is opened, the first son Chamber is connected to third sub-chamber；Third air door 32 pushes first connecting rod 71, and first connecting rod 71 pushes away under 32 thrust of third air door Dynamic first air door 42 rotates around the axis, and the first valve 4 is closed；Third air door 32 pulls second connecting rod 72, second connecting rod at the same time 72 pull the second air door 52 to rotate around the axis under 32 pulling force of third air door, and the second valve 5 is closed, and the first valve 4 and the second valve 5 close Conjunction third valve 3 is locked, make third valve 3 by the first valve 4, the second valve 5 reaction force and stop.

Heat exchange state, the output shaft of driving device 6 directly drive third air door 32 and rotate backward, and third valve 3 is closed, the One sub-chamber and third sub-chamber separate；Third air door 32 pulls first connecting rod 71 simultaneously, and first connecting rod 71 is in third air door 32 The first air door 42 is pulled to rotate around the axis under pulling force, the first valve 4 is opened, and air exhaust passage 001 is opened；Third air door 32 at the same time Second connecting rod 72 is pushed, second connecting rod 72 pushes the second air door 52 to rotate around the axis under 32 thrust of third air door, and the second valve 5 is opened It opens, fresh air channel 002 is opened.

As shown in figure 9, the utility model further relates to a kind of fresh air system, the system include above-mentioned channel switching device and The new blower of heat exchange, first entrance are indoor return air mouth, and first outlet is indoor exhaust wind mouth, and second entrance is fresh air air inlet, Second outlet is indoor air outlet.The exhaust outlet of the new blower of heat exchange passes through in connecting tube and channel switching device indoor return air mouth First flange 21 connect, the fresh wind port of the new blower of heat exchange passes through the on air outlet in connecting tube and channel switching device room The connection of two flanges 22, heat exchange ventilation system realize that double wind channels are commutated by channel switching device.Can by room air by Air draft flow direction is discharged to outdoor, and outdoor air is sent to interior by fresh air flow direction；It again can be by room air from interior recirculating air flow to again Return to interior.

Those skilled in the art will readily recognize that above-mentioned each preferred embodiment can be free under the premise of not conflicting Ground combination, superposition.

It should be appreciated that above-mentioned embodiment is merely exemplary, and not restrictive, without departing from the utility model In the case where basic principle, those skilled in the art can be for the various apparent or equivalent modification that above-mentioned details is made Or replacement, it is all included in the scope of the claims of the utility model.

Claims (12)

1. a kind of channel switching device, it is characterised in that: described device includes chamber and enters with the first of the chamber Mouth, first outlet, second entrance and second outlet；

It is formed with the first passage that can be connected to the first entrance and the first outlet in the chamber, and can be connected to The second channel of the second entrance and the second outlet is provided with for controlling the first passage in the first passage On-off the first valve, the second valve of the on-off for controlling the second channel is provided in the second channel；

The third channel for being connected to the first entrance and the second outlet is additionally provided in the chamber, in the third channel It is provided with the third valve of the on-off for controlling the third channel, the third valve setting is in the first passage and described the Between two channels；

It further include transformational structure, the transformational structure is configured to close institute while driving first valve and the second valve is opened Third valve is stated, opens the third valve while driving first valve and the second valve is closed.

2. channel switching device according to claim 1, it is characterised in that: the chamber is divided by the third valve One chamber and second chamber, the first chamber is interior to form the first passage, and it is logical to form described second in the second chamber Road；

The first valve setting is divided into third sub-chamber, the 4th sub- chamber in the first chamber, and by the first chamber Room, the first outlet are connected to the 4th sub-chamber, and the first entrance is connected to the third sub-chamber；And/or

The second valve setting is divided into the first sub-chamber, the second sub- chamber in the second chamber, and by the second chamber Room, the second outlet are connected to first sub-chamber, and the second entrance is connected to second sub-chamber；

The third valve is arranged between first sub-chamber and the third sub-chamber.

3. channel switching device according to claim 1 or 2, which is characterized in that the transformational structure includes driving device And transmission mechanism；The transmission mechanism is connect with first valve, the second valve and third valve respectively, and the driving device passes through The transmission mechanism drives the third valve to open or close, and the second valve and the first valve is driven to close or open simultaneously.

4. a kind of channel switching device according to claim 3, it is characterised in that: first valve include first baffle, First air door, the first baffle are equipped with first and cross air port, and first air door is rotated by shaft and the first baffle Connection, the output end of the transmission mechanism are able to drive first air door and rotate around the axis to open or close first mistake Air port；And/or

Second valve includes second baffle, the second air door, and the second baffle is equipped with second and crosses air port, and second air door passes through Shaft and second baffle are rotatablely connected, and the output end of the transmission mechanism is able to drive second air door and rotates around the axis to beat On or off closes described second and crosses air port；And/or

Third valve includes third baffle, third air door, and the third baffle is equipped with third and crosses air port, and the third air door passes through Shaft and third baffle are rotatablely connected, and the output end of the transmission mechanism is able to drive the third air door and rotates around the axis to beat On or off closes the third and crosses air port.

5. channel switching device according to claim 4, which is characterized in that the chamber includes the first cavity wall, the second chamber Wall, third cavity wall and the 4th cavity wall, wherein first cavity wall and second cavity wall are oppositely arranged, the third cavity wall and 4th cavity wall is oppositely arranged, and the third baffle is connected with first cavity wall and second cavity wall respectively；

The second baffle is connected in second cavity wall or the first cavity wall close to one end of the third valve；And/or it is described First baffle is connected in second cavity wall or the first cavity wall close to one end of the third valve.

6. channel switching device according to claim 5, which is characterized in that the first outlet and the second entrance are set It sets in first cavity wall, the first entrance and the second outlet are arranged in second cavity wall.

7. a kind of channel switching device according to claim 4, it is characterised in that: the transmission mechanism includes the first company Bar, second connecting rod；

The side of one end of the first connecting rod and the third air door is rotatablely connected, the other end of the first connecting rod with it is described The side of second air door is rotatablely connected；

One end of the second connecting rod and the other side of the third air door are rotatablely connected, the other end of the second connecting rod and institute State the side rotation connection of the first air door；

The output end of the driving device is connect with the third air door, the driving device directly drive the third air door around The rotation of one shaft, the third air door drive the first connecting rod, second connecting rod linkage.

8. a kind of channel switching device according to claim 7, it is characterised in that: one end of the second connecting rod with it is described The middle part of third air door is rotatablely connected, and the other end of the second connecting rod pass through in the third baffle cross air port with it is described The middle part of first air door is rotatablely connected.

9. a kind of channel switching device according to claim 3, it is characterised in that: be additionally provided with mounting groove knot in the chamber Structure, the driving device are arranged in the installation slot structure, the installation slot structure be constructed so that the driving device and The first passage, second channel, third channel separate.

10. a kind of channel switching device according to claim 1 or 2, it is characterised in that: be equipped with the at the first outlet Four flanges；And/or

Second flange is equipped at the second entrance；And/or

Third flange is equipped at the second outlet；And/or

The first access point is equipped with first flange.

11. a kind of channel switching device according to claim 1 or 2, it is characterised in that: described device includes cabinet, institute It states cabinet and forms the chamber, the first entrance, first outlet, second entrance and second outlet are arranged on the cabinet.

12. a kind of fresh air system, it is characterised in that: the fresh air system includes the new blower of heat exchange and claim 1 to 11 times Channel switching device described in one, the first entrance are indoor return air mouth, and the first outlet is indoor exhaust wind mouth, described Second entrance is fresh air air inlet, and the second outlet is indoor air outlet；The exhaust outlet of the new blower of heat exchange with it is described The indoor return air mouth of channel switching device is connected to, the fresh wind port of the new blower of heat exchange and the interior of the channel switching device Air outlet connection.