CN214223328U

CN214223328U - Fresh air purifying and ventilating device adapting to two installation modes

Info

Publication number: CN214223328U
Application number: CN202023334552.6U
Authority: CN
Inventors: 陈文恭; 晏双涛
Original assignee: Beijing Huandu Top Air Conditioning Co ltd
Current assignee: Beijing Huandu Top Air Conditioning Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-09-17
Anticipated expiration: 2030-12-31

Abstract

The utility model discloses a fresh air purification and ventilation device adapting to two installation modes, which comprises a shell and a foaming component. The foaming component is arranged in the hollow cavity of the shell and is provided with a containing cavity, a first air inlet cavity, a second air inlet cavity, a first air outlet cavity and a second air outlet cavity. First air inlet chamber, first air outlet chamber, second air inlet chamber and second air outlet chamber are linked together with holding the chamber respectively, and just first air inlet chamber sets up with second air inlet chamber about holding the chamber symmetry, and first air outlet chamber sets up with second air outlet chamber about holding the chamber symmetry. The heat exchanger is accommodated in the accommodating cavity. The fresh air filter and the exhaust air filter are interchangeably arranged at a first inlet and a second inlet of the heat exchanger respectively. This breather can make new trend passageway and return air passageway exchange through the position of exchanging two filters, and two indoor side wind gaps and two outdoor side wind gaps exchange to change the mounting means, can adapt to the different installation demand of customer, improved the convenience of installation.

Description

Fresh air purifying and ventilating device adapting to two installation modes

Technical Field

The utility model belongs to the clarification plant field especially relates to a new trend purifies breather.

Background

In hot summer or cold winter, people need to close doors and windows for a long time in order to keep a comfortable indoor air state; this causes carbon dioxide and dirty air to accumulate in the room, and the long-term exposure to such an environment may cause damage to the human body. The fresh air purifying and ventilating device is a ventilating device, and can provide fresh and comfortable air for a user under the condition of ensuring the tight closing of doors and windows.

At present, similar products in the market are more and more miscellaneous, and the products are mainly divided into: one-way air interchanger (only air intake and not air exhaust) and two-way air interchanger (with air intake and air exhaust, generally equipped with heat exchanger components). The bidirectional flow product can supply air to the room and discharge dirty air in the room at the same time, so that quick air exchange is realized; meanwhile, because the heat exchanger component is arranged in the air interchanger, the energy of the temperature and the humidity in the exhaust air can be recycled to act on the fresh air, and the energy loss is effectively reduced; the device provided with the high-efficiency filter can remove harmful tiny particulate matters (PM2.5 particles and the like) in the air while ensuring the freshness of fresh air.

According to the difference of mounting means, fresh air purification breather divide into again: ceiling mounted ventilators, floor mounted ventilators, wall mounted ventilators, and the like. At present, the fresh air ventilation device compatible with various installation modes is rarely seen in the market.

The installation mode can be divided into a left installation mode and a right installation mode according to the position relation of the air interchanger and the installation wall body. The left installation refers to that when the air interchanger is installed, the air interchanger is positioned on the left side, and the wall body is positioned on the right side; the right-hand installation is the opposite of the left-hand installation. After the existing air interchanger is produced, because the internal structure of the air interchanger is fixed, a fresh air duct and a return air duct inside equipment are fixed, the positions of a fresh air inlet, a fresh air outlet, a return air inlet and a return air outlet are fixed, and the arrangement mode of air pipes connected with the air ports is determined. Therefore, when installing, only the left installation or the right installation can be carried out according to the set mode. When specifically installing breather, the user can't change the mounting means by oneself according to self demand to probably bring inconvenience for user's installation, reduce user experience.

Disclosure of Invention

The utility model aims to solve the technical problem that a new trend purification breather that adapts to two kinds of mounting means is provided, can select left formula installation or right formula installation according to the installation environment to improve the convenience of new trend purification breather installation.

In order to realize the technical purpose, the utility model adopts the following technical scheme:

the utility model provides a new trend purification breather of two kinds of mounting means of adaptation, includes:

a housing having a hollow cavity;

the foaming component is accommodated in the hollow cavity of the shell and is provided with an accommodating cavity, a first air inlet cavity, a first air outlet cavity, a second air inlet cavity and a second air outlet cavity, the first air inlet cavity, the first air outlet cavity, the second air inlet cavity and the second air outlet cavity are respectively communicated with the accommodating cavity, the first air inlet cavity and the second air inlet cavity are symmetrically arranged relative to the accommodating cavity, and the first air outlet cavity and the second air outlet cavity are symmetrically arranged relative to the accommodating cavity;

the heat exchanger is accommodated in the accommodating cavity, a first inlet is formed in one side of the heat exchanger facing the first air inlet cavity, a first outlet is formed in one side of the heat exchanger facing the first air outlet cavity, a second inlet is formed in one side of the heat exchanger facing the second air inlet cavity, and a second outlet is formed in one side of the heat exchanger facing the second air outlet cavity;

the fresh air filter is used for filtering fresh air outside;

the air exhaust filter is used for filtering indoor return air;

the fresh air filter and the exhaust air filter are interchangeably arranged at a first inlet and a second inlet of the heat exchanger respectively;

when the fresh air filter is arranged at the first inlet and the exhaust air filter is arranged at the second inlet, the first air inlet cavity and the first air outlet cavity form a fresh air channel, and the second air inlet cavity and the second air outlet cavity form a return air channel;

when the fresh air filter is arranged at the second inlet, and the exhaust filter is arranged at the first inlet, the first air inlet cavity and the first air outlet cavity form a return air channel, and the second air inlet cavity and the second air outlet cavity form a fresh air channel.

Preferably, the foaming component comprises a first foaming piece and a second foaming piece;

the first foaming piece is provided with a first accommodating cavity, a first air inlet channel, a first air outlet channel sub-channel and a second air outlet channel sub-channel, and the first air inlet channel, the first air outlet channel sub-channel and the second air outlet channel sub-channel are respectively communicated with the first accommodating cavity;

the second foaming piece is provided with a second accommodating cavity, a second air inlet channel, a second air outlet channel sub-channel and a first air outlet channel sub-channel, and the second air inlet channel, the second air outlet channel sub-channel and the first air outlet channel sub-channel are respectively communicated with the second accommodating cavity;

the first foaming piece and the second foaming piece are mutually attached and aligned, so that the first accommodating cavity and the second accommodating cavity jointly form the accommodating cavity, the two first air outlet channel sub-channels form a first air outlet channel, and the two second air outlet channel sub-channels form a second air outlet channel;

the first foaming piece and the second foaming piece are both integrally formed by EPP or EPS foaming materials.

Preferably, the housing comprises a top plate, and the top plate is provided with a first air inlet, a second air inlet, a first air outlet and a second air outlet; the first air inlet and the second air outlet are positioned at the same side, and the first air outlet and the second air inlet are positioned at the same side;

the first air inlet is communicated with the first inlet through the first air inlet channel, the second air inlet is communicated with the second inlet through the second air inlet channel, the first air outlet is communicated with the first outlet through the first air outlet channel, and the second air outlet is communicated with the second outlet through the second air outlet channel.

Preferably, the first foaming piece is further provided with a bypass channel, one end of the bypass channel is communicated with the first air inlet channel, the other end of the bypass channel is communicated with the first air outlet channel, and one end of the bypass channel, which is close to the first air inlet channel, is provided with a bypass valve and a bypass filter;

or a bypass channel is further arranged in the second foaming piece, one end of the bypass channel is communicated with the second air inlet channel, the other end of the bypass channel is communicated with the second air outlet channel, and a bypass valve and a bypass filter are arranged at one end, close to the second air inlet channel, of the bypass channel.

Preferably, the fresh air purifying and ventilating device further comprises a bypass channel plate, the bypass channel plate is arranged between the side face of the heat exchanger and the side plate of the shell, and a connecting channel is formed in the bypass channel plate;

one end of the connecting channel is communicated with the bypass channel, and the other end of the connecting channel is communicated with the first air outlet channel; or one end of the connecting channel is communicated with the bypass channel, and the other end of the connecting channel is communicated with the second air outlet channel.

Wherein preferably, the side sections of the accommodating cavity and the heat exchanger are hexagonal;

the bypass channel plate is in a hexagonal prism shape, a middle partition plate is arranged on one inclined diagonal line, the bypass channel plate is divided into two parts by the middle partition plate, the part on the first side of the middle partition plate forms a closed area, and the part on the second side of the middle partition plate forms the connecting channel; the bypass channel plate is opened on the first side plate and the second side plate corresponding to the connecting channel, and the other side plates are closed.

Preferably, the bypass valve is arranged in the first air inlet cavity and can swing back and forth along a set direction, the bypass valve swings to a first position, the first air inlet channel is opened, and the bypass channel is closed; the bypass valve swings to a second position, the first air inlet channel is closed, and the bypass channel is opened; the bypass valve swings to any position between a first position and a second position, and both the first air inlet passage and the bypass passage are opened;

or the bypass valve is arranged in the second air inlet cavity and can swing back and forth along a set direction, the bypass valve swings to a first position, the second air inlet channel is opened, and the bypass channel is closed; the bypass valve swings to a second position, the second air inlet channel is closed, and the bypass channel is opened; the bypass valve swings to any position between a first position and a second position, and both the second intake passage and the bypass passage are open.

Preferably, the bypass valve comprises a bypass support, a bypass motor and bypass blades, the bypass motor is arranged in the bypass support, and a driving shaft of the bypass motor is connected with a rotating shaft of the bypass blades so as to drive the bypass blades to swing back and forth along a set angle.

Preferably, the first inlet of the heat exchanger, the inner wall of the housing and the inner wall of the first foaming member together define the first air inlet chamber from the first air inlet to the first inlet of the heat exchanger; the first outlet of the heat exchanger, the inner wall of the housing, and the inner walls of the first and second foaming members together define the first air outlet chamber from the first outlet of the heat exchanger to the first air outlet;

the second inlet of the heat exchanger, the inner wall of the housing and the inner wall of the second foam element together define the second air intake chamber from the second air intake opening to the second inlet of the heat exchanger; the second outlet of the heat exchanger, the inner wall of the housing, and the inner walls of the first and second foam pieces collectively define the second outlet chamber from the second outlet of the heat exchanger to the second outlet vent.

Preferably, a protrusion or a groove is arranged on one side of the first foaming piece close to the second foaming piece, a groove or a protrusion is arranged on one side of the second foaming piece close to the first foaming piece, and the protrusion is clamped with the groove to limit the relative position of the first foaming piece and the second foaming piece.

Compared with the prior art, the utility model, beneficial effect as follows:

the utility model provides a new trend purification breather of two kinds of mounting means of adaptation, be provided with new trend passageway and return air passageway about the heat exchanger symmetry inside the shell, only can exchange new trend passageway and return air passageway through the position of exchanging new trend filter and exhaust filter, thereby make two wind gaps (including return air intake and new trend supply-air outlet) of indoor side and two wind gaps (including new trend air intake and return air exhaust outlet) of outdoor side exchange the position, arrange of the pipeline that convenient and four wind gaps link to each other, thereby the user can be according to self needs, select the mounting means of left-hand formula installation or right side formula installation by oneself. Moreover, the fresh air purification and ventilation device is simple and compact in structure, small in size, capable of adapting to wall-mounted and ceiling-mounted mounting modes and capable of improving the mounting convenience of the fresh air purification and ventilation device.

Drawings

Fig. 1 is a schematic structural view of a fresh air purifying and ventilating device provided in an embodiment of the present invention;

FIG. 2 is a schematic top view of the fresh air purifying and ventilating device shown in FIG. 1;

FIG. 3 is a schematic structural diagram of the fresh air purifying and ventilating device when the first access panel and the second access panel are opened;

FIG. 4 is a schematic front view of the fresh air purifying and ventilating device with the first access panel and the second access panel omitted;

FIG. 5 is a schematic structural view of the fresh air purifying and ventilating device with the front and rear side plates of the housing omitted;

FIG. 6 is a schematic front view of the fresh air purifying and ventilating device shown in FIG. 5 with front and rear side plates of the housing omitted;

FIG. 7 is a schematic rear view of the fresh air purifying and ventilating device shown in FIG. 5 with front and rear side plates of the housing omitted;

FIG. 8 is a schematic rear view of the fresh air purifying and ventilating device in a normal return air state;

FIG. 9 is a schematic rear view of the fresh air purifying and ventilating device in the bypass return air state;

FIG. 10 is a schematic view of the overall construction of the foaming component;

FIG. 11 is a schematic front view of the first blister;

FIG. 12 is a schematic view of the back side structure of the first foam member;

FIG. 13 is a schematic front view of a second blister;

FIG. 14 is a schematic view of the back structure of the second foam member;

fig. 15 is a schematic structural view of a bypass passage plate;

FIG. 16 is a schematic view of the bypass valve construction.

In the drawings, each reference numeral denotes:

1. a housing; 11. a first air inlet; 12. a second air inlet; 13. a first air outlet; 14. a second air outlet; 15. a first access panel; 16. a second access panel;

2. a foaming component; 201. an accommodating chamber; 202. a first air inlet cavity; 203. a first air outlet cavity; 204. a second air inlet cavity; 205. a second air outlet cavity; 21. a first foam element; 22. a second foamed member; 211. a first accommodating chamber; 212. a first air intake passage; 213. a first outlet channel sub-channel; 214. a second outlet channel sub-channel; 215. a protrusion; 221. a second accommodating chamber; 222. a second intake passage; 223. a second outlet channel sub-channel; 224. a first outlet channel sub-channel; 225. a groove; 226. a bypass channel;

3. a heat exchanger; 31. a first inlet; 32. a first outlet; 33. a second inlet; 34. a second outlet;

4. a fresh air filter; 5. an exhaust air filter; 6. a first fan; 7. a second fan;

8. a controller; 81. a first control panel; 82. a second control panel;

9. a bypass filter;

10. a bypass passage plate; 100. a middle partition plate; 101. a connecting channel; 102. a first side plate; 103. a second side plate;

20. a temperature and humidity sensor; 30. a temperature sensor;

40. a bypass valve; 401. a bypass bracket; 402. a bypass motor; 403. the vanes are bypassed.

Detailed Description

The technical solution of the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1 to 7, a fresh air purifying and ventilating device (hereinafter, referred to as a fresh air purifying and ventilating device) adapted to two installation methods according to an embodiment of the present invention includes: the device comprises a shell 1, a foaming component 2, a heat exchanger 3, a fresh air filter 4, an exhaust air filter 5, a first fan 6, a second fan 7 and a controller 8. The first fan 6 and the second fan 7 are electrically connected with the controller 8, and the controller 8 can control the first fan 6 and the second fan 7 to be opened and closed, so that the whole device is controlled to run and stop, and the rotating speeds of the first fan 6 and the second fan 7 can be controlled to achieve different gears; in addition, the housing 1 is a metal housing to ensure structural strength.

Referring to fig. 2 and 3, the metal casing 1 has a hollow cavity, and the casing 1 has a top plate, a bottom plate, and four side plates, thereby defining the hollow cavity. Referring to fig. 2 and 10, the foaming component 2 is accommodated in the hollow cavity of the metal shell 1, and the foaming component 2 has an accommodating cavity 201, a first air inlet cavity 202, a first air outlet cavity 203, a second air inlet cavity 204 and a second air outlet cavity 205. The first air inlet cavity 202, the first air outlet cavity 203, the second air inlet cavity 204 and the second air outlet cavity 205 are respectively communicated with the accommodating cavity 201, the first air inlet cavity 202 and the second air inlet cavity 204 are symmetrically arranged relative to the accommodating cavity 201, the first air outlet cavity 203 and the second air outlet cavity 205 are symmetrically arranged relative to the accommodating cavity 201, and the foaming component 2 is made of foaming materials such as EPP or EPS.

The heat exchanger 3 is accommodated in the accommodating chamber 201, and a side of the heat exchanger 3 facing the first air inlet chamber 202 has a first inlet 31, a side facing the first air outlet chamber 203 has a first outlet 32, a side facing the second air inlet chamber 204 has a second inlet 33, and a side facing the second air outlet chamber 205 has a second outlet 34. Referring to fig. 1, the housing 1 is provided with a first air inlet 11, a second air inlet 12, a first air outlet 13 and a second air outlet 14. In this embodiment, the first air inlet 11, the second air inlet 12, the first air outlet 13 and the second air outlet 14 are all located on the top plate of the housing 1, so that the product can be applied to villa installation. The first air inlet 11 is communicated with the first air inlet cavity 202, the second air inlet 12 is communicated with the second air inlet cavity 204, the first air outlet 13 is communicated with the first air outlet cavity 203, and the second air outlet 14 is communicated with the second air outlet cavity 205. The first air intake chamber 202 communicates with the first air outlet chamber 203 through the heat exchanger 3, and the second air intake chamber 204 communicates with the second air outlet chamber 205 through the heat exchanger 3. The first inlet vent 11 and the second outlet vent 14 are located on the same side of the top panel (right side as viewed in fig. 1), and the first outlet vent 12 and the second inlet vent 13 are located on the same side of the top panel (left side as viewed in fig. 1).

The fresh air filter 4 is used for filtering outdoor fresh air. In this embodiment, the fresh air filter 4 can not only filter large particles (such as dust, lint, etc.) in the fresh air, but also filter harmful substances (such as PM2.5 particles) in the fresh air, such that the fresh air can be sent into the room from the fresh air channel after being subjected to advanced filtering, thereby ensuring air quality.

The exhaust filter 5 is used for filtering indoor return air. In this embodiment, the exhaust filter 5 is used to filter the indoor foul air and then discharge the filtered indoor foul air to the outside, and since the air discharged to the outside only needs to satisfy the discharge index, the air only needs to be primarily filtered to filter out larger particles (such as dust, lint, etc.) in the indoor foul air and then discharged to the outside. Therefore, in this embodiment, it should be particularly noted that the fresh air filter 4 and the exhaust air filter 5 both have filtering effects, but the filtering effects are different.

In the foaming component 2, a first slot is arranged at a position close to the first inlet 31 of the heat exchanger 3, a second slot is arranged at a position close to the second inlet 32 of the heat exchanger 3, the shapes of the first slot and the second slot are the same, and the positions of the first slot and the second slot are symmetrical about the accommodating cavity 201.

The fresh air filter 4 and the exhaust air filter 5 have the same shape and can be inserted into the first slot or the second slot. In order to adapt to the left installation and the right installation, the insertion positions of the fresh air filter 4 and the exhaust air filter 5 can be interchanged.

When the fresh air filter 4 is disposed in the first slot near the first inlet 31 and the exhaust air filter 5 is disposed in the second slot near the second inlet 33; the first air inlet cavity 202 is an outdoor fresh air cavity, the first air outlet cavity 203 is an indoor air supply cavity, and the first air inlet cavity 202, the heat exchanger 2 and the first air outlet cavity 203 form a fresh air channel; the second air inlet cavity 204 is an indoor air return cavity, the second air outlet cavity 205 is an outdoor air outlet cavity, and the second air inlet cavity 204, the heat exchanger 2 and the second air outlet cavity 205 form an air return channel. At this time, the first air inlet 11 on the housing 1 is an outdoor fresh air inlet, the first air outlet 13 is an indoor air supply outlet, the second air inlet 12 is an indoor air return outlet, and the second air supply outlet 14 is an outdoor air outlet. Two air ports (including outdoor fresh air port and outdoor air outlet, corresponding to the first air inlet 11 and the second air outlet 14) on the outdoor side are both positioned on the right side, and the fresh air purifying and ventilating device can be installed on the left side of the wall body, and is installed in a left mode at the moment.

When the fresh air filter 4 is arranged at the second inlet and the exhaust air filter 5 is arranged at the first inlet, the positions of the fresh air channel and the return air channel are interchanged. At this time, the first air inlet cavity 202 is an indoor air return cavity, the first air outlet cavity 203 is an outdoor air outlet cavity, and the first air inlet cavity 202, the heat exchanger 2 and the first air outlet cavity 203 form an air return channel; the second air inlet cavity 204 is an outdoor fresh air cavity, the second air outlet cavity 205 is an indoor air supply cavity, and the second air inlet cavity 204, the heat exchanger 2 and the second air outlet cavity 205 form a fresh air channel. At this time, the first air inlet 11 on the housing 1 is an indoor air return inlet, the first air outlet 13 is an outdoor air outlet, the second air inlet 12 is an outdoor fresh air inlet, and the second air outlet 14 is an indoor air outlet. Two air ports (including outdoor fresh air port and outdoor air outlet, corresponding to the second air inlet 12 and the first air outlet 13) on the outdoor side are both positioned on the left side, and the fresh air purifying and ventilating device can be installed on the right side of the wall body, and is installed in a right mode at the moment.

The first fan 6 is arranged in the first air outlet cavity 203, and the second fan 7 is arranged in the second air outlet cavity 205. When the fresh air filter 4 is inserted into the first slot near the first inlet 31 and the exhaust air filter 5 is inserted into the second slot near the second inlet 33, the first fan 6 is used as a fresh air fan and the second fan 7 is used as an exhaust air fan. When the fresh air filter 4 and the exhaust air filter 5 are switched, the first fan 6 is used as an exhaust air fan, and the second fan 7 is used as a fresh air fan.

The air exchange principle of the fresh air purification and exchange device will be described below by taking the first fan 6 as a fresh air fan and the second fan 7 as an exhaust fan as examples.

At this time, the air outlet of the first fan 6 is communicated with the indoor air through the first air outlet 13 of the housing 1. The first air inlet 11 on the casing 1 is communicated with outdoor air. Under the action of the first fan 6, fresh outdoor air can enter the first air inlet cavity 202 through the first air inlet 11; and enters the heat exchanger 3 for heat exchange after being filtered by the fresh air filter 4; then, the fresh air after heat exchange enters the first air outlet cavity 203 and is finally sent to the indoor, and the single arrow in fig. 5 indicates the flow direction of the outdoor fresh air.

The second fan 7 is disposed in the second air outlet cavity 205, and an air outlet of the second fan 7 is communicated with outdoor air through a second air outlet 14 on the housing 1. The second air inlet 12 on the casing 1 is communicated with indoor air. Under the action of the second fan 7, indoor air enters the second air inlet cavity 204 through the second air inlet 12, is primarily filtered by the exhaust filter 5 and then enters the heat exchanger 3 for heat exchange; the air after heat exchange by the heat exchanger 3 enters the second air outlet chamber 205 and is discharged to the outside, and the double-headed arrow in fig. 5 indicates the flow direction of the indoor turbid air.

When first fan 6 was as the fan of airing exhaust, second fan 7 was as the new trend fan, the position of new trend passageway and return air passageway exchanged, and the principle of taking a breath of new trend purification ventilator is similar with above-mentioned principle, no longer gives unnecessary details here.

Referring to fig. 1 and 3, a first access panel 15 is detachably mounted on the casing 1 at a position corresponding to the exhaust air filter 5, and a second access panel 16 is detachably mounted on the casing 1 at a position corresponding to the fresh air filter 4; the first access panel 15 and the second access panel 16 are detachably provided in the same side plate (front side plate shown in fig. 1) of the housing 1. Under the state that the first access panel 15 and the second access panel 16 are both opened, the positions of the fresh air filter 4 and the exhaust air filter 5 can be exchanged, so that the first air inlet cavity 202 and the second air inlet cavity 204 are exchanged, and the first air outlet cavity 203 and the second air outlet cavity 205 are exchanged. In the illustrated embodiment, the first access panel 15 and the second access panel 16 are provided on a front side panel of the casing 1. When the first access panel 15 and the second access panel 16 are simultaneously provided in the front side panel of the housing 1, the other three side panels of the housing 1 may be in contact with the wall, thereby facilitating left-hand installation and right-hand installation. It will be appreciated that the first access panel 15 and the second access panel 16 may also be provided on the rear side panel of the housing 1.

In this embodiment, the bottom of each of the first access panel 15 and the second access panel 16 is provided with a protrusion (not shown in the figure), and meanwhile, the top of each of the first access panel 15 and the second access panel 16 is provided with a buckle; correspondingly, a groove is arranged at the position corresponding to the protrusion on the front panel of the shell 1, and a clamping groove is arranged at the position corresponding to the buckle. When first access panel 15 and second access panel 16 need be installed, at first go into the recess of shell 1 with the protruding card of first access panel 15 and second access panel 16 bottom, then, promote first access panel 15 and second access panel 16 for the buckle at first access panel 15 and second access panel 16 top and the draw-in groove looks block of shell 1 can. When needs are dismantled, press the buckle at

first access panel

15 and 16 tops of second access panel for buckle and draw-in groove separation, then, with first access panel 15 and the 16 bottom of second access panel protruding from the shell 1 in take out can, the ann tears very conveniently open. However, it should be understood that the first access panel 15 and the second access panel 16 are only one preferred embodiment in this embodiment, and in other embodiments, other detachable structures may be adaptively replaced.

In this embodiment, the fresh air purifying and ventilating device has a foaming component 2 made of a foaming material (e.g., EPP or EPS) inside, and the foaming component 2 has a first air inlet chamber 202 and a second air inlet chamber 204 symmetrical about the accommodating chamber 201, and a first air outlet chamber 203 and a second air outlet chamber 205 symmetrical about the accommodating chamber 201. Meanwhile, a first access panel 15 and a second access panel 16 are detachably mounted on the housing 1, and the fresh air filter 4 and the exhaust air filter 5 can be maintained or exchanged in position by using the first access panel 15 and the second access panel 16. After the positions of the fresh air filter 4 and the exhaust air filter 5 are exchanged, because the foaming component 2 has symmetry in structure and the fresh air filter 4 and the exhaust air filter 5 have different filtering effects, the original outdoor fresh air cavity becomes the new indoor return air cavity, the original indoor return air cavity becomes the new outdoor fresh air cavity, and similarly, the original indoor air supply cavity becomes the new outdoor air supply cavity, and the original outdoor air supply cavity becomes the new indoor air supply cavity. When the fresh air purifying and ventilating device needs to be installed, if the default installation mode is left-type installation, the installation mode is changed into right-type installation after the positions of the fresh air filter 4 and the exhaust air filter 5 are exchanged. The user can select suitable mounting means by oneself according to self needs to the convenience of fresh air purification breather installation has been improved. Simultaneously, utilize this first access panel 15 and second access panel 16 can also very conveniently maintain fresh air filter 4 and exhaust filter 5, be favorable to improving user experience.

In addition, in the above embodiment, the foaming component 2 is directly molded by a mold, and during assembly, the foaming component 2 is placed in the hollow inner cavity of the housing 1, the heat exchanger 3 and the foaming component 2 are in limit matching, and then the components such as the first fan 6, the second fan 7 and the like are adaptively installed. Meanwhile, when the device needs to be maintained, the foaming component 2 and other parts can be directly disassembled from the shell 1, so that the convenience of assembling and maintaining the whole device can be improved.

Referring to fig. 10, in the above embodiment, it is preferable that the foaming assembly 2 includes the first foaming member 21 and the second foaming member 22, and both the first foaming member 21 and the second foaming member 22 are integrally molded by the foaming material. The foaming part made of the foaming material has the following advantages: firstly, the raw material cost is low, and the part forming and the die manufacturing are simple, so that the die opening cost and the manufacturing cost can be reduced; secondly, the foaming quality is low, so that the whole device is light in weight and is more convenient to transport and install; thirdly, the foaming is softer, which is helpful for improving the sealing performance of the whole device; fourthly, the foamed sound and heat insulation effect is good, and the heat preservation effect and the sound insulation effect of the whole device can be improved; fifthly, as the internal structure adopts an integral foaming form, the foaming parts replace a sheet metal partition plate and a sealing element inside the metal sheet metal shell, and the assembly process of the product is further simplified; sixth, because set up the foaming part in the metal casing, the heat preservation effect of device is more excellent, has promoted the heat exchange efficiency of device, has reduced the possibility that the device produced the condensation, can make the device be suitable for more abominable environment to the cotton volume of heat preservation that the device need be used has been practiced thrift.

In the above embodiment, referring to the orientation shown in fig. 1 and 5, the first foaming member 21 and the second foaming member 22 are disposed along the front-rear direction of the housing 1, the first foaming member 21 is attached to the front side plate, the left side plate and the right side plate of the housing 1, the second foaming member 22 is attached to the rear side plate, the left side plate and the right side plate of the housing 1, the fresh air channel is from the front right to the front left (i.e., the direction indicated by the single arrow) in fig. 1 and 5, and the return air channel is from the rear left to the rear right (i.e., the direction indicated by the double arrow) in fig. 1.

Referring to fig. 11 and 12, the first foaming member 21 has a first receiving chamber 211, a first air inlet channel 212, a first air outlet channel sub-channel 213 and a second air outlet channel sub-channel 214 thereon. The first air inlet channel 212 and the first air outlet channel sub-channel 213 are respectively communicated with two sides of the first accommodating cavity 211, which are opposite and obliquely arranged. The first air intake passage 212 forms the first air intake chamber 202. The second outlet channel sub-channel 214 communicates with the other side of the first receiving cavity 211 at the lower portion.

Referring to fig. 13 and 14, the second foaming member 22 has a second receiving chamber 221, a second air inlet passage 222, a second air outlet passage sub-passage 223 and a first air outlet passage sub-passage 224. The second air inlet channel 222 and the second air outlet channel sub-channel 223 are respectively communicated with two opposite and obliquely arranged side edges of the second accommodating cavity 221. The second air intake passage 222 forms a second air intake chamber 204. The first outlet channel sub-channel 224 is communicated with the other side of the second accommodating cavity 221 at the lower part.

The first foaming part 21 and the second foaming part 22 are mutually attached and aligned, so that the first accommodating cavity 211 and the second accommodating cavity 221 jointly form an accommodating cavity 201; first air outlet channel sub-channel 213 and first air outlet channel sub-channel 224 form a first air outlet channel, namely first air outlet cavity 203; second air outlet channel sub-channel 214 and second air outlet channel sub-channel 223 constitute a second air outlet channel, i.e. second air outlet cavity 205. The heat exchanger 3 is accommodated in the accommodation chamber 201. The first fan 6 is accommodated in a space of the first air outlet channel (i.e., the first air outlet cavity 203) at the lower part of the accommodating cavity 201. The second fan 7 is accommodated in a space of the second air outlet channel (i.e. the second air outlet cavity 205) at the lower part of the accommodating cavity 201.

In the above embodiment, the first air intake passage 212 has the air intake opening facing the first air intake opening 11, and has the air outlet opening facing the first inlet 31 of the heat exchanger 3; the first air outlet channel 213 has an air inlet facing the first outlet 32 of the heat exchanger 3, and has an air outlet facing the first air outlet 13; the second air intake passage 222 has an air intake opening facing the second air intake opening 12, and has an air outlet opening facing the second inlet 33 of the heat exchanger 3; the second air outlet passage 223 has an air inlet facing the second outlet 34 of the heat exchanger 3 and has an air outlet facing the second air outlet 14. When the heat exchanger 3 is assembled into the accommodating chamber 201, the first inlet port 11 communicates with the first inlet port 31 through the first air inlet passage 212, the second inlet port 12 communicates with the second inlet port 33 through the second air inlet passage 222, the first outlet port 13 communicates with the first outlet port 32 through the first air outlet passage (including the first air outlet passage sub-passages 213 and 224), and the second outlet port 14 communicates with the second outlet port 34 through the second air outlet passage (including the second air outlet passage sub-passages 214 and 223).

Referring to fig. 14, in the above embodiment, it is preferable that the second foaming member 22 further has a bypass passage 226, one end of the bypass passage 226 is communicated with the second air inlet passage 222, and the other end of the bypass passage 226 is communicated with the second air outlet passage sub-passage 223. The bypass channel 226 has an air inlet facing the second air inlet channel 222 and an air outlet facing the second air outlet channel sub-channel 223, and the bypass channel 226 is utilized to make the fresh air ventilator have a bypass function.

The left-hand installation is taken as an example in this embodiment. Referring to fig. 8 and 9, it can be seen that the bypass channel 226 is located adjacent to the second air intake channel 222, and the second air intake channel 222 is part of the return air channel, and the bypass channel is used for the return air bypass. When the bypass passage 226 is closed (i.e., in the state shown in fig. 8), the ventilator passes through the heat exchanger 3 both for air supply and air discharge, and the operation mode of the ventilator is the heat recovery mode, and the direction indicated by the double-headed arrow in fig. 8 is the flow direction of the air in the normal return air state. At hot summer night, when outdoor temperature is more suitable, outdoor new trend can directly send into indoorly through heat exchanger, and need not to carry out the energy exchange with indoor return air, and indoor foul air can not pass through heat exchanger 3, and directly through bypass passage discharge outdoor, can further reduce the loss of the energy like this, promote heat exchanger 3's life simultaneously. At this time, the bypass passage 226 is opened (i.e., the state shown in fig. 9), and the direction indicated by the broken line arrow in fig. 9 is the flow direction of the air in the return air bypass state.

In the above embodiment, it should be noted that, when the bypass function is turned on, although the indoor foul air does not pass through the heat exchanger 3, the bypass filter 9 is further disposed at the inlet of the bypass channel 226, and the indoor foul air is filtered by the bypass filter 9 before entering the bypass channel 226.

Meanwhile, it should be understood that, since the installation mode of the fresh air purifying and ventilating device can be changed, after the exchange positions of the fresh air filter 4 and the exhaust air filter 5, the bypass channel 226 is used for fresh air bypass, that is, the return air bypass function is replaced by the fresh air bypass function. When the outdoor temperature is proper and the fresh air bypass function is started, the outdoor fresh air can directly enter the room through the bypass channel without heat exchange.

Further, it is easily understood that, in the above-described embodiment, a bypass passage may be provided in the first foaming member 21 such that one end of the bypass passage communicates with the first air inlet passage 212 and the other end of the bypass passage communicates with the first air outlet passage 213. The bypass channel has the same structural form as the bypass channel 226 of the second foaming member 22, and the functions can be achieved similarly, which is not described in detail herein.

Referring to fig. 7 and 15, in the above embodiment, preferably, the fresh air purifying and ventilating device further includes a bypass channel plate 10, the bypass channel plate 10 is disposed between a side surface (a side close to the rear side plate) of the heat exchanger 3 and the rear side plate of the casing 1, and the bypass channel plate 10 is provided with a connecting channel 101; one end of connecting channel 101 communicates with bypass channel 226, and the other end of connecting channel 101 communicates with second outlet channel sub-channel 223.

Specifically, in this embodiment, the side cross-sections of the accommodation chamber 201 and the heat exchanger 3 are hexagonal. The bypass passageway plate 10 has a hexagonal prism shape, wherein a middle partition plate 100 is provided on one diagonal line of the inclination, the middle partition plate 100 divides an area inside the bypass passageway plate 10 into two parts, a part located on a first side (an upper side in the drawing) of the middle partition plate 100 forms a closed area, and a part located on a second side (a lower side in the drawing) of the middle partition plate 100 forms a connecting passageway 101. The bypass passage plate 10 is opened to a first side plate 102 and a second side plate 103 corresponding to the connection passage 101, and the other side plates are closed, thereby forming the connection passage 101 indicated by an arrow in the drawing. The bypass channel 226 can communicate with the second outlet channel sub-channel 223 by using the connecting channel 101. Accordingly, the bypass passage 226 has an air inlet facing the second air intake passage 222, and has an air outlet facing the connection passage 101 of the bypass passage plate.

When the bypass channel 226 is opened in the left-hand installation, indoor foul air is filtered by the bypass filter 9 and then enters the second air outlet channel from the bypass channel 226 through the connecting channel 101 under the action of the second fan 7, and finally is discharged to the outside from the second air outlet 14 of the housing 1.

In addition, it is easily understood that, in the above embodiment, when the bypass channel is disposed on the first foaming element 21, one end of the connecting channel 101 is communicated with the first air inlet channel 212, and the other end is communicated with the first air outlet channel, and the detailed functions are the same, and are not described herein again.

Referring to fig. 8 and 9, in the above embodiment, the fresh air purifying and ventilating device further includes the bypass valve 40. In the illustrated embodiment, the bypass valve 40 is provided in the second intake chamber 204 and can be reciprocated in a predetermined direction. The illustrated construction corresponds to a left-hand installation. The bypass valve 40 swings to the first position (i.e. the position shown in fig. 8), the air inlet of the second air inlet passage 222 is opened, the air inlet of the bypass passage 226 is closed, and at this time, the whole device is in the normal air exhaust mode, and indoor foul air passes through the second air inlet passage 222 and is primarily filtered by the air exhaust filter 5, enters the heat exchanger 3 for energy exchange, and is then exhausted to the outside. When the bypass valve 40 swings to the second position (i.e. the position shown in fig. 9), the air inlet of the second air inlet channel 222 is closed, the air inlet of the bypass channel 226 is opened, at this time, the whole device is in the return air bypass mode, the indoor foul air directly enters the bypass channel 226 after being filtered by the bypass filter 9, then enters the second air outlet channel through the connecting channel 101, and finally is discharged to the outdoor without the energy exchange process of the heat exchanger 3, so that the energy is saved. The bypass valve 40 swings to any position between the first position and the second position, the second air inlet channel 222 and the bypass channel 226 are both opened, and at this time, the mixed exhaust mode is adopted, namely, part of indoor foul air is subjected to heat exchange through the heat exchanger 3 and is primarily filtered through the exhaust filter 5 and then is discharged to the outdoor, and the other part of indoor foul air is directly filtered through the bypass filter 9 and then is discharged to the outdoor without passing through the heat exchanger 3, and at this time, the air volume can be distributed by adjusting the position of the bypass valve 40 according to the indoor and outdoor temperature difference, so that the utilization rate of energy is improved.

After the exchange of the fresh air filter 4 and the exhaust air filter 5, the opening or closing of the fresh air inlet channel and the bypass channel can be controlled through the swing of the bypass valve 40, the specific implementation mode is the same as that of the return air bypass, and the description is omitted.

In addition, it is easily understood that when the bypass channel is disposed on the first foaming element 21, the bypass valve 40 is disposed in the first air inlet chamber 202, and the opening or closing of the first air inlet channel 212 and the bypass channel can be controlled by the swing of the bypass valve 40, which is the same as the control of the bypass valve 40 on the second air inlet channel 222 and the bypass channel 226, and is not described herein again.

Referring to fig. 16, in the above embodiment, it is preferable that the bypass valve 40 includes a bypass bracket 401, a bypass motor 402, and bypass vanes 403, the bypass motor 402 is disposed in the bypass bracket 401, and a driving shaft of the bypass motor 402 is connected to a rotating shaft of the bypass vanes 403 to drive the bypass vanes 403 to swing back and forth along a set angle to close the second intake passage 222 or the bypass passage 226. The bypass valve 40 in this embodiment is relatively simple in structure and convenient to overhaul and maintain. It is easily understood that, when the bypass passage is provided on the first foaming member 21, the bypass motor 403 can drive the bypass vane 403 to swing back and forth along a set angle to close the first air intake passage 212 or the bypass passage.

In the above embodiment, preferably, the first inlet 31 of the heat exchanger 3, the inner wall of the housing 1 and the inner wall of the first foaming member 21 together define the first air inlet chamber 202 from the air inlet of the first air inlet passage 212 to the first inlet 31 of the heat exchanger 3; the first outlet 32 of the heat exchanger 3, the inner wall of the housing 1, and the inner walls of the first and

second foaming pieces

21 and 22 together define a first outlet chamber 203 from the first outlet 32 of the heat exchanger 3 to the outlet of the second outlet channel 213; the second inlet 33 of the heat exchanger 3, the inner wall of the housing 1, and the inner walls of the second foaming member 22 and the first foaming member 21 together define a second air inlet chamber 204 from the air inlet of the second air inlet passage 222 to the second inlet 33 of the heat exchanger 3; the second outlet 34 of the heat exchanger 3, the inner wall of the housing 1 and the inner walls of the second foaming member 22 and the first foaming member 21 together define a second outlet chamber 205 from the second outlet 34 of the heat exchanger 3 to the outlet of the second outlet passage 223.

In the left-hand installation, in the above embodiment, under the action of the first fan 6, the fresh air entering from the first air inlet 11 passes through the first air inlet channel 212 (i.e., the first air inlet chamber 202, which is located at the right front position shown in fig. 1 and above the heat exchanger 3), enters the heat exchanger 3 from the first inlet 31 of the heat exchanger 3, then enters the first air outlet channel (i.e., the first air outlet chamber 203, which is located at the left front position shown in fig. 1 and the first air outlet chamber 203 includes the lower part, the left side and the upper part of the heat exchanger 3) communicated with the first outlet 32 of the heat exchanger 3, and finally is sent to the indoor.

During heat exchange, under the action of the second fan 7, the indoor return air entering from the second air inlet 12 passes through the second air inlet channel 222 (the second air inlet chamber 204 is located at the left rear position shown in fig. 1 and above the heat exchanger 3), enters the heat exchanger 3 from the second inlet 33 of the heat exchanger 3, then enters the second air outlet channel (i.e., the second air outlet chamber 205 is located at the right rear position shown in fig. 1, and the second air outlet chamber 205 includes spaces below, right side, and above the heat exchanger 3) communicated with the second outlet 34 of the heat exchanger 3, and finally is discharged to the outside.

When the bypass mode is turned on, the indoor return air entering from the second air inlet 12 enters the bypass passage 226 through the second air inlet passage 222, flows through the connecting passage 101, is drawn into the second air outlet passage 223 by the second fan 7, and is finally discharged to the outside.

Referring to fig. 12 and 13, in the above embodiment, preferably, the first foaming piece 21 has a protrusion 215 on a side close to the second foaming piece 22, and the second foaming piece 22 has a groove 225 on a side close to the first foaming piece 21, and after the first foaming piece 21 and the second foaming piece 22 are attached and aligned, the protrusion 215 is engaged with the groove 225, so that the relative position between the first foaming piece 21 and the second foaming piece 22 can be limited, and on one hand, the stability of connection between the two can be improved, on the other hand, the function of connection alignment can be also achieved, and the convenience of assembly can be improved. It will be readily appreciated that the first foam element 21 may also be provided with recesses, while the second foam element 22 is provided with projections. In other embodiments, the alignment connection may be performed by other connection methods, for example: the slide way and the slide block are arranged and connected in a sliding fit mode; another example is: the connection of the two is carried out by a buckle, etc.

Referring to fig. 2, in the above embodiment, preferably, the temperature and humidity sensors 20 are disposed at the air inlets of the first air inlet cavity 202 and the second air inlet cavity 204, and the temperature sensors 30 are disposed at the air outlets of the first air outlet cavity 203 and the second air outlet cavity 205. The temperature and humidity sensor 20 and the temperature and humidity sensor 20 are respectively connected with the controller 8, so that the functions of automatic bypass, automatic dehumidification, automatic frost prevention and the like of the ventilation device can be realized. The controller 8 may adjust the rotation speed of the first fan 6 and the second fan 7 by using an existing integrated circuit or PLC.

Referring to fig. 4, in the above embodiment, a first control panel 81 and a second control panel 82 connected to the controller 8 are further included. Wherein, the first control panel 81 is arranged outside the housing 1 between the first access panel 15 and the second access panel 16. The first control panel 81 can display the operating state of the ventilation device, and the first control panel 81 is provided with a plurality of gear buttons, each of which corresponds to different rotation speeds of the first fan 6 and the second fan 7. A specific gear can be selected on the first control panel 81 by a gear button, and the gear includes: trip keeps off, 1 shelves, 2 shelves, 3 shelves and high-grade, and different gears correspond different fan rotational speeds, and the user can carry out the gear selection according to self demand. Meanwhile, the first control panel 81 can also display whether the working state of the filter is abnormal or not, so as to remind a user whether to perform maintenance or not. The second control panel 82 is disposed inside the housing 1 and hidden behind the second access panel 16, the second control panel 82 cannot be seen in a normal state, and the second control panel 82 behind can be seen only when the second access panel 16 is opened. The second control panel 82 has a wind speed adjustment button thereon to adjust the rotation speeds of the first fan 6 and the second fan 7 at a set gear. This second control panel 82 can carry out the specific speed regulation of fan to a certain gear, for example: when the gear is selected to be the 1 st gear on the first control panel 81, the rotation speed of the fan can be adjusted within a certain range on the second control panel 82, the second control panel 82 is provided with a + button and a-button, the + button corresponds to the increase of the rotation speed of the fan, and the-button corresponds to the decrease of the rotation speed of the fan. Therefore, the convenience of use of the user can be further improved in a double-control-panel mode, and the user experience is improved. In addition, the fresh air purifying and ventilating device can be further provided with a remote controller (not shown in the figure), which is equivalent to a third control panel, and the third control panel can be connected with the controller 8 in a wired or wireless manner, so as to remotely control the rotating speeds of the first fan 6 and the second fan 7 in a wired or wireless manner, thereby being more convenient for users to use.

In addition, in some special cases (such as cooking and gathering by multiple people), the maximum air volume of the fresh air product is required to operate for a period of time, and then the normal operation is recovered. If the maximum air volume is manually set, the original mode needs to be set again afterwards, and the operation is troublesome. In this embodiment, the first control panel 81 of the ventilation device further has a maximum air volume button (not shown in the figure), when the button is pressed, the whole device starts to operate with the maximum air volume, and after the device operates for a period of time (the operating time can be set), the whole device automatically recovers to the previous operating state, thereby greatly simplifying the operation process.

In the above embodiment, preferably, the first fan 6 and the second fan 7 are "constant air volume" fans, and even if the impurities accumulated on the surface of the filter are more and more, the air volume of the fans can automatically adjust the rotating speed according to the change of the resistance of the filter, so as to ensure that the air volume of the whole device is constant, and provide better use experience for users.

To sum up, the fresh air purifying and ventilating device adapted to two installation modes provided by the utility model has a foaming component made of foaming material inside, and the foaming component has a first air inlet cavity and a second air inlet cavity which are symmetrical about the containing cavity, and a first air outlet cavity and a second air outlet cavity which are symmetrical about the containing cavity; after the positions of the fresh air filter and the exhaust air filter are exchanged, because the foaming component has symmetry in structure and the fresh air filter and the exhaust air filter have different filtering effects, the original outdoor fresh air cavity is changed into a new indoor return air cavity, the original indoor return air cavity is changed into a new outdoor fresh air cavity, meanwhile, the original indoor air supply cavity is changed into an outdoor new air supply cavity, and the original outdoor air supply cavity is changed into an indoor new air supply cavity. When needs equipment breather, if acquiescent mounting means is left-hand type installation, then exchange the position back of new trend filter and exhaust filter, the mounting means just becomes right-hand type installation, and the user can select suitable mounting means by oneself according to self needs to the convenience of breather installation has been improved.

It is right above the utility model provides a new trend purification breather of two kinds of mounting means of adaptation carries out detailed explanation. Any obvious modifications to the above would be obvious to those of ordinary skill in the art, without departing from the spirit of the present invention, and it is intended to constitute a violation of the patent rights of the present invention and to bear the relevant legal responsibility.

Claims

1. The utility model provides a new trend purification breather of two kinds of mounting means of adaptation which characterized in that includes:

a housing having a hollow cavity;

the fresh air filter is used for filtering fresh air outside;

the air exhaust filter is used for filtering indoor return air;

2. The fresh air purifying and ventilating device adapting to two installation modes as claimed in claim 1, characterized in that: the foaming component comprises a first foaming piece and a second foaming piece;

the first foaming piece and the second foaming piece are both integrally formed by foaming materials.

3. The fresh air purifying and ventilating device adapting to two installation modes as claimed in claim 2, characterized in that: the shell comprises a top plate, and a first air inlet, a second air inlet, a first air outlet and a second air outlet are formed in the top plate; the first air inlet and the second air outlet are positioned at the same side, and the first air outlet and the second air inlet are positioned at the same side;

4. A fresh air purifying and ventilating device adapting to two installation modes as claimed in claim 3, characterized in that:

the first foaming piece is also provided with a bypass channel, one end of the bypass channel is communicated with the first air inlet channel, the other end of the bypass channel is communicated with the first air outlet channel, and a bypass valve and a bypass filter are arranged at one end, close to the first air inlet channel, of the bypass channel;

5. The fresh air purifying and ventilating device adapting to two installation modes as claimed in claim 4, characterized in that: the heat exchanger also comprises a bypass channel plate, wherein the bypass channel plate is arranged between the side surface of the heat exchanger and the side plate of the shell, and a connecting channel is formed in the bypass channel plate;

6. The fresh air purifying and ventilating device adapting to two installation modes as claimed in claim 5, characterized in that:

the side sections of the accommodating cavity and the heat exchanger are hexagonal;

7. The fresh air purifying and ventilating device adapting to two installation modes as claimed in claim 4, characterized in that: the bypass valve is arranged in the first air inlet cavity and can swing back and forth along a set direction, the bypass valve swings to a first position, the first air inlet channel is opened, and the bypass channel is closed; the bypass valve swings to a second position, the first air inlet channel is closed, and the bypass channel is opened; the bypass valve swings to any position between a first position and a second position, and both the first air inlet passage and the bypass passage are opened;

8. The fresh air purifying and ventilating device adapting to two installation modes as claimed in claim 7, characterized in that: the bypass valve comprises a bypass support, a bypass motor and bypass blades, the bypass motor is arranged in the bypass support, and a driving shaft of the bypass motor is connected with a rotating shaft of the bypass blades so as to drive the bypass blades to swing back and forth along a set angle.

9. A fresh air purifying and ventilating device adapting to two installation modes as claimed in claim 3, characterized in that:

the first inlet of the heat exchanger, the inner wall of the housing and the inner wall of the first foam piece together define the first air intake chamber from the first air intake to the first inlet of the heat exchanger; the first outlet of the heat exchanger, the inner wall of the housing, and the inner walls of the first and second foaming members together define the first air outlet chamber from the first outlet of the heat exchanger to the first air outlet;

10. The fresh air purifying and ventilating device adapting to two installation modes as claimed in claim 2, characterized in that: the first foaming piece is provided with a protrusion or a groove at one side close to the second foaming piece, the second foaming piece is provided with a groove or a protrusion at one side close to the first foaming piece, and the protrusion is clamped with the groove to limit the relative position of the first foaming piece and the second foaming piece.