CN222378449U

CN222378449U - A building heating and ventilation device

Info

Publication number: CN222378449U
Application number: CN202323595145.4U
Authority: CN
Inventors: 周卫东
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-12-28
Filing date: 2023-12-28
Publication date: 2025-01-21
Anticipated expiration: 2033-12-28

Abstract

The utility model discloses a building HVAC device, including a building HVAC device body, the building HVAC device body includes a shell, the inner walls on both sides of the shell are respectively provided with air inlet holes and air outlet holes, a fan and an electric heating wire located on the right side thereof are fixedly installed on the bottom inner wall of the shell, an air inlet filter and an air outlet filter are respectively fixedly installed in the air inlet hole and the air outlet hole, and a slag cleaning and dredging mechanism matched with the air inlet filter is installed on the shell. The utility model is convenient for warm air supply and sound absorption and noise reduction during ventilation, convenient for filtering and intercepting impurities in the extracted external fresh air, convenient for automatic and regular back-blowing cleaning and dredging of the air inlet filter from the inside to the outside and reciprocating brushing cleaning of the outer side thereof, and with the cooperation of the above two methods, it is convenient for automatic and regular cleaning and dredging of the air inlet filter, without the need for personnel to regularly disassemble and clean it, saving time and labor, and improving the stability of use and the degree of automation of cleaning.

Description

Building heating ventilation device

Technical Field

The utility model relates to the technical field of heating ventilation equipment, in particular to a building heating ventilation device.

Background

Heating ventilation is a classification name of work in building equipment, mainly comprising three aspects of heating, ventilation and air conditioning, wherein the heating ventilation is a whole term of heating gas supply ventilation and air conditioning engineering in the subject classification, is a component part of a building, and is a process of feeding air into a room or exhausting air from the room, and utilizes outdoor air (called fresh air or fresh air) to replace air (called indoor air) in the building, and is generally divided into natural ventilation and mechanical ventilation; air conditioning, called air conditioner for short, is used for regulating the temperature, humidity, cleanliness and air flow rate in a room or space and providing a sufficient amount of fresh air, and ventilation, called ventilation, is to mechanically or naturally send sufficient fresh air into an indoor space to enable the indoor air to meet the sanitary requirement and the production process requirement; all facilities for finishing ventilation work in the building are collectively called ventilation equipment, wherein the ventilation equipment comprises an exhaust fan, a ventilating fan, a fan and the like, and the fan comprises two types of industrial and household fans, and the fan comprises high, medium, low, negative pressure and the like.

Through retrieving, chinese patent, publication No. CN212538111U discloses a building heating ventilation device, which comprises a housin, one side of casing is provided with the air intake, the inner chamber fixedly connected with of casing is provided with a plurality of acoustic boards, the inner chamber bottom of casing is provided with the plummer, the bottom and the top fixed connection of one of them acoustic board of plummer, the top fixedly connected with driving motor of plummer, driving motor's output rotates and is connected with the flabellum, one side joint of air intake has first dustproof filter screen, the inner chamber of casing and the one side joint that is located the flabellum have the dustproof filter screen of second, it absorbs the noise that produces through the setting of a plurality of acoustic boards, noise that the device produced has been reduced, again through driving motor and flabellum's setting, ventilation effect has been strengthened, again through the cooperation use of first dustproof filter screen and the dustproof filter screen of second, the purpose of filtering impurity has been realized, the cleanliness of device has been improved.

The building heating ventilation device comprises a shell, sound absorption and noise reduction are achieved through a sound absorbing plate arranged on the inner wall of the shell, impurity filtering interception on fresh air sucked in is achieved through a first dustproof filter screen on the left side, but the building heating ventilation device still has the following defects that 1, the second dustproof filter screen on the right side is used for air outlet, impurities cannot be accumulated and blocked under the effect of blowing air from inside to outside, but the first dustproof filter screen on the left side is used for air inlet filtering when sucking, a phenomenon that blocking impurities are not smooth is caused due to easiness in accumulation of filter holes and the left side, and people are required to disassemble, assemble, clean and dredge at regular time, time and labor are required to be improved.

Disclosure of utility model

The utility model aims to provide a building heating ventilation device for solving the problems in the background technology.

The building heating ventilation device comprises a building heating ventilation device body, wherein the building heating ventilation device body comprises a shell, an air inlet hole and an air outlet hole are respectively formed in the inner walls of two sides of the shell, a fan and an electric heating wire positioned on the right side of the fan are fixedly arranged on the inner wall of the bottom of the shell, an air inlet filter screen and an air outlet filter screen are respectively fixedly arranged in the air inlet hole and the air outlet hole, when the fan is started, external new air is extracted through the air inlet filter screen and blown to the right, air is heated by the electric heating wire to form warm air, and the warm air is blown out through the air outlet filter screen to perform warm air supply work;

The device comprises a shell, and is characterized in that a slag removal dredging mechanism matched with an air inlet filter screen is mounted on the shell, the slag removal dredging mechanism comprises a rectangular box fixedly connected to the left side of the top of the shell, the bottom of the rectangular box is provided with an opening, a reciprocating lifting driving assembly is sleeved in the rectangular box, the top of the rectangular box is fixedly provided with a driving motor fixedly connected with the output shaft and the reciprocating lifting driving assembly, a telescopic vertical conduction air back-blowing assembly is fixedly embedded on the right side of the top of the reciprocating lifting driving assembly, the bottom of the telescopic vertical conduction air back-blowing assembly extends into the shell and is positioned on the right side of the air inlet filter screen, an air outlet fixedly connected with the telescopic vertical conduction air back-blowing assembly is fixedly arranged on the right side of the top of the rectangular box, a PLC (programmable logic controller) is fixedly arranged on the left side of the top of the rectangular box, the air pump and the driving motor are electrically connected with the PLC respectively, the bottom left side of the reciprocating lifting driving assembly is fixedly connected with a vertical conduction cleaning assembly, the vertical conduction cleaning assembly is positioned above the left side of the air inlet filter screen and is flush with the left side of the reciprocating lifting driving assembly, and the reciprocating lifting driving assembly is used for driving the telescopic vertical conduction air back-blowing assembly and the vertical conduction cleaning assembly to move up and down the telescopic vertical conduction cleaning assembly when the driving motor is started, and the telescopic vertical conduction cleaning assembly is used for cleaning the left side of the air filter screen and cleaning up and the left side of the air filter screen.

Preferably, the reciprocating lifting driving assembly comprises a lifting seat which is sleeved in the rectangular box in a sliding manner, a reciprocating screw rod which is positioned in the rectangular box is rotationally connected to the left side of the top of the shell, a reciprocating screw hole which is in threaded connection with the reciprocating screw rod is formed in the top of the lifting seat, the top end of the reciprocating screw rod is fixedly connected with the bottom end of an output shaft of the driving motor, the lifting seat is matched with the reciprocating screw rod, the reciprocating screw rod is driven to rotate by the driving motor, and the reciprocating screw rod is driven to move up and down in a reciprocating manner by the rotation of the reciprocating screw rod.

Preferably, the telescopic vertical air-conducting blowback component comprises an outer pipe which is embedded and fixed on the right side of the top of the lifting seat, the bottom end of the outer pipe penetrates through the top of the shell in a sliding mode and extends to the inside of the shell, a blowback box is fixedly connected to the bottom of the outer pipe, a plurality of blowback pipe heads are fixedly connected to the left side of the blowback box, the blowback pipe heads are located on the right side of an air inlet filter screen and matched with the air inlet filter screen, an inner pipe is sleeved in the outer pipe in a sliding mode, the top end of the inner pipe is communicated and fixed with the bottom end of an air outlet of the air pump, the arranged outer pipe, the blowback box, the blowback pipe heads and the inner pipe are matched, the lifting seat is utilized to drive the blowback box and the blowback pipe heads to move downwards in a reciprocating mode through the outer pipe, air enters the blowback box through the outer pipe, and then the blowback pipe heads moving downwards in a reciprocating mode are blown out leftwards to carry out comprehensive blowback cleaning and dredging operation on the air inlet filter screen.

Preferably, the vertical guide brush cleaning assembly comprises two vertical guide rods fixedly connected to the left side of the bottom of the lifting seat, the bottom ends of the two vertical guide rods are respectively extended to the lower side of the rectangular box and fixedly connected with the same cleaning brush, the right sides of bristles of the cleaning brushes are flush with the left side of the air inlet filter screen, the two vertical guide rods are sleeved with the same support plate in a sliding mode, the top of the support plate is fixedly connected with the left side of the bottom of the rectangular box, the arranged vertical guide rods, the cleaning brushes and the support plate are matched, the lifting seat is utilized to drive the cleaning brushes to reciprocate downwards, and the cleaning brushes are utilized to comprehensively brush and clean impurities accumulated on the left side of the air inlet filter screen.

Preferably, the PLC controller is a programmable controller.

Preferably, the top of two sides of the rectangular box is fixedly connected with the same U-shaped baffle, and the PLC, the air pump and the driving motor are all positioned in the U-shaped baffle.

Preferably, the top inner wall, the bottom inner wall, the front side inner wall and the rear side inner wall of the shell are fixedly connected with sound absorbing boards, two mounting holes are formed in the top of the sound absorbing board below, a support fixedly connected to the bottom inner wall of the shell is arranged in each mounting hole, the fan and the electric heating wire are respectively and fixedly arranged at the tops of the corresponding supports, and the sound absorbing board on the front side and the front side inner wall of the shell are embedded and fixed with the same transparent board.

Compared with the prior art, the utility model has the beneficial effects that:

1. According to the building heating ventilation device, through the cooperation of the shell, the fan, the air inlet filter screen, the sound absorbing plate, the air outlet filter screen and the electric heating wire, the heating air supply work can be carried out when the fan and the electric heating wire are started, the sound absorbing plate can be utilized to absorb sound and reduce noise when ventilation is carried out, and the air inlet filter screen can be utilized to filter and intercept impurities in extracted external fresh gas;

2. The utility model provides a warm ventilation device of building, through the filter screen that admits air that sets up, the rectangle box, the PLC controller, driving motor, the air pump, reciprocal lift drive assembly, flexible perpendicular switch on the air blowback subassembly and erect and lead the cooperation of brushing the clear subassembly, after utilizing the PLC controller to predetermine the start-stop time and the interval of control driving motor and air pump according to clearance interval demand, can regularly automatic from inside to outside to the filter screen blowback clearance mediation of admitting air and to its outside reciprocal brushing clearance, under the cooperation of blowback and brushing the mode, can regularly automatic to the filter screen effectual scarfing cinder mediation of admitting air, need not personnel to dismantle the clearance mediation regularly, labour saving and time saving improves stability in use and clearance degree of automation.

The utility model has a series of structures, is convenient for carrying out warm air supply work and ventilation, absorbing sound and reducing noise, is convenient for filtering and intercepting impurities in extracted external fresh air, is convenient for automatically and regularly cleaning and dredging the back blowing of the air inlet filter screen from inside to outside and cleaning the outer side of the air inlet filter screen in a reciprocating brushing way, is convenient for automatically and regularly cleaning and dredging the slag of the air inlet filter screen effectively in cooperation with the two modes, does not need personnel to regularly disassemble, assemble, clean and dredge, saves time and labor, and improves the use stability and the cleaning automation degree.

Drawings

Fig. 1 is a schematic perspective view of a building heating ventilation device according to the present utility model;

FIG. 2 is a schematic diagram of a cross-sectional front view of a building heating ventilation device according to the present utility model;

fig. 3 is an enlarged schematic view of the portion a in fig. 2 according to the present utility model.

In the figure, 1, a shell; 101, an air inlet hole, 102, an air outlet hole, 103, a fan, 104, an electric heating wire, 2, a rectangular box, 3, a U-shaped baffle, 4, an air inlet filter screen, 5, a lifting seat, 6, a vertical guide rod, 7, a support plate, 8, a cleaning brush, 9, an inner pipe, 10, an outer pipe, 11, a back blowing box, 12, a back blowing pipe head, 13, an air pump, 14, a driving motor, 15, a PLC controller and 16, a reciprocating screw.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1 to 3, the building heating ventilation device provided in this embodiment includes a building heating ventilation device body, the building heating ventilation device body includes a housing 1, an air inlet hole 101 and an air outlet hole 102 are respectively formed on inner walls of two sides of the housing 1, a fan 103 and an electric heating wire 104 positioned on the right side of the fan are fixedly mounted on inner walls of the bottom of the housing 1, an air inlet filter screen 4 and an air outlet filter screen are respectively fixedly mounted on the air inlet hole 101 and the air outlet hole 102, sound absorbing plates are fixedly connected on inner walls of the top, the inner walls of the bottom, the inner walls of the front side and the inner walls of the rear side of the housing 1, two mounting holes are formed in the top of the sound absorbing plate positioned below, a support fixedly connected on the inner wall of the bottom of the housing 1 is arranged in each mounting hole, the fan 103 and the electric heating wire 104 are respectively fixedly mounted on top of the corresponding support, the sound absorbing plate positioned on the front side and the inner wall of the front side of the housing 1 are embedded and are fixedly provided with the same transparent plate, when the fan 103 is opened, external fresh air is pumped through the air inlet filter screen 4 and blown to the right, and the electric heating wire 104 is used for heating air to form warm air, and the warm air is blown out through the air filter screen 104, and the warm air is supplied to the air for working;

The shell 1 is provided with a slag removing and dredging mechanism matched with the air inlet filter screen 4, the slag removing and dredging mechanism comprises a rectangular box 2 fixedly connected to the left side of the top of the shell 1, the bottom of the rectangular box 2 is provided with an opening, a reciprocating lifting driving component is sleeved in a sliding way in the rectangular box 2, the top of the rectangular box 2 is fixedly provided with a driving motor 14 with an output shaft fixedly connected with the reciprocating lifting driving component, the right side of the top of the reciprocating lifting driving component is embedded and fixed with a telescopic vertical conduction air back-blowing component, the bottom of the telescopic vertical conduction air back-blowing component extends into the shell 1 and is positioned on the right side of the air inlet filter screen 4, the right side of the top of the rectangular box 2 is fixedly provided with an air pump 13 with an air outlet fixedly communicated with the telescopic vertical conduction air back-blowing component, the left side of the top of the rectangular box 2 is fixedly provided with a PLC (programmable logic controller) 15, the air pump 13 and the driving motor 14 are electrically connected with the PLC 15, the left side of the bottom of the reciprocating lifting driving component is fixedly connected with a vertical guide brush cleaning component which is positioned at the left upper part of the air inlet filter screen 4 and is vertically parallel to the left side of the air inlet filter screen 4, the tops of two sides of the rectangular box 2 are fixedly connected with the same U-shaped baffle 3, a PLC (programmable logic controller) controller 15, an air pump 13 and a driving motor 14 are all positioned in the U-shaped baffle 3, the effect of shielding and protecting the PLC controller 15, the air pump 13 and the driving motor 14 is achieved, the PLC controller 15 is a programmable logic controller, the reciprocating lifting driving component is used for driving the telescopic vertical conduction air blowback component and the vertical guide brush cleaning component to move up and down in a reciprocating manner when the driving motor 14 is started, the telescopic vertical conduction air blowback component is used for cleaning and dredging the air inlet filter screen 4 in a blowback manner when the air pump 13 is started, the vertical guide brush cleaning component is used for comprehensively brushing and cleaning impurities accumulated on the left side of the air inlet filter screen 4 when the reciprocating up in a reciprocating manner when the upward movement is realized through the PLC controller 15, the effect that the PLC 15 is utilized to preset and control the driving motor 14 and the air pump 13 to be opened and closed at regular time according to the cleaning interval requirement is achieved.

Specifically, the reciprocating lifting driving assembly comprises a lifting seat 5 which is sleeved in the rectangular box 2 in a sliding manner, a reciprocating screw 16 which is positioned in the rectangular box 2 is rotationally connected to the left side of the top of the shell 1, a bearing is fixedly connected to the left side of the top of the shell 1, the inner side of an inner ring of the bearing is fixedly connected with the outer side of the reciprocating screw 16, the effect of rotationally mounting the reciprocating screw 16 is achieved, a reciprocating screw hole which is in threaded connection with the reciprocating screw 16 is formed in the top of the lifting seat 5, the effect of conveniently driving the lifting seat 5 to reciprocate downwards and upwards when the reciprocating screw 16 is started is achieved by means of the threaded connection between the reciprocating screw 16 and the reciprocating screw hole, the top end of the reciprocating screw 16 is fixedly connected with the bottom end of an output shaft of a driving motor 14, the lifting seat 5 is matched with the reciprocating screw 16, the reciprocating screw 16 is driven to rotate by means of the driving motor 14, and the reciprocating screw 16 is driven to reciprocate downwards and upwards.

Further, the telescopic vertical air-conducting blowback component comprises an outer pipe 10 which is embedded and fixed on the right side of the top of the lifting seat 5, an embedded hole fixedly connected with the outer side of the outer pipe 10 is formed in the right side of the top of the lifting seat 5, the bottom end of the outer pipe 10 penetrates through the top of the shell 1 in a sliding mode and extends to the inside of the outer pipe, movable through holes for the outer pipe 10 to penetrate through in a sliding mode are formed in the inner wall of the top of the shell 1 and the top of an acoustic absorption plate above the shell, a blowback box 11 is fixedly communicated with the bottom of the outer pipe 10, a plurality of blowback pipe heads 12 are fixedly communicated with the left side of the blowback box 11, the blowback pipe heads 12 are located on the right side of the air inlet filter screen 4 and are matched with the outer pipe, an inner pipe 9 is sleeved in the outer pipe 10 in a sliding mode, the top end of the inner pipe 9 is communicated with and fixed with the bottom end of an air outlet of the air pump 13, the outer pipe 10, the blowback box 11, the blowback pipe 12 and the inner pipe 9 are matched with the inner pipe 10, the outer pipe 5 is driven to move up and down by the lifting seat 5 in a reciprocating mode, air supply air into the inner pipe 9, air is supplied to the blowback pipe 9, and air enters the blowback box 11 through the blowback box 11 and then is fully blown back through the outer pipe 12, and the inner pipe 12 and is fully and is subjected to cleaning work.

Further, the vertical guide brush cleaning assembly comprises two vertical guide rods 6 fixedly connected to the left side of the bottom of the lifting seat 5, the bottoms of the two vertical guide rods 6 are all extended to the lower portion of the rectangular box 2 and fixedly connected with the same cleaning brush 8, the right sides of bristles of the cleaning brush 8 are flush with the left side of the air inlet filter screen 4, two vertical guide holes which are respectively sleeved with the outer sides of the corresponding vertical guide rods 6 in a sliding mode are formed in the top of the supporting plate 7 in a sliding mode, the supporting plate 7 is sleeved on the two vertical guide rods 6 in a sliding mode through the two vertical guide holes in a sliding mode, the effect of guiding the vertical guide rods 6 in a sliding mode is achieved, the top of the supporting plate 7 is fixedly connected with the left side of the bottom of the rectangular box 2, the arranged vertical guide rods 6, the cleaning brush 8 and the supporting plate 7 are matched, the cleaning brush 8 is driven to move up and down in a reciprocating mode through the two vertical guide rods 6 by the lifting seat 5, and impurities accumulated on the left side of the air inlet filter screen 4 are cleaned in a sliding mode.

When the fan 103 is started, external fresh air is pumped through the air inlet filter screen 4 and blown rightwards, when warm air needs to be supplied, the electric heating wire 104 is started to heat the air blown rightwards to form warm air, the warm air is blown out through the air outlet filter screen to perform warm air supply work, when ventilation is performed, the sound absorbing plate absorbs noise to perform sound absorption and noise reduction work, and impurities can be shielded by filtering when the external fresh air is pumped in through the air inlet filter screen 4;

The start-stop time and the interval of control driving motor 14 and air pump 13 are preset to the PLC controller 15 according to clearance interval demand, when reaching the clearance time, PLC controller 15 control driving motor 14 and air pump 13 are opened, driving motor 14 drives reciprocating screw 16 and rotates, reciprocating screw 16 rotates and drives lifting seat 5 reciprocal down-movement, lifting seat 5 drives outer tube 10 reciprocal down-movement on inner tube 9, outer tube 10 drives a plurality of blowback tube heads 12 reciprocal down-movement through blowback box 11, air feed in interior pipe 9 when air pump 13 starts, gas gets into blowback box 11 through outer tube 10, blow out to intake filter screen 4 through the blowback tube head 12 of reciprocal down-movement carries out comprehensive blowback clearance work, still drive the reciprocal down-movement of cleaning brush 8 through two vertical guide bars 6 when starting lifting seat 5 reciprocal down-movement, when reaching the shut-off time, PLC controller 15 controls driving motor 14 and air pump 13 to shut down, carry out back-flushing and automatic brush and automatic cleaning up-movement again when waiting for next clearance time, the clearance mode of cleaning brush 4 is convenient for the time-saving and automatic cleaning up-down, the clearance mode of removing the outside is convenient for the self-cleaning by the self-cleaning, the time-cleaning mode of the time-saving is reached.

It should be noted that the above-mentioned embodiments are merely preferred embodiments of the present utility model, and the present utility model is not limited thereto, but may be modified or substituted for some of the technical features thereof by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The building heating ventilation device comprises a building heating ventilation device body, wherein the building heating ventilation device body comprises a shell (1), an air inlet hole (101) and an air outlet hole (102) are respectively formed in the inner walls of two sides of the shell (1), a fan (103) and an electric heating wire (104) positioned on the right side of the fan are fixedly arranged on the inner wall of the bottom of the shell (1), and the building heating ventilation device is characterized in that an air inlet filter screen (4) and an air outlet filter screen are fixedly arranged in the air inlet hole (101) and the air outlet hole (102) respectively;

Install on casing (1) with filter screen (4) matched with scarfing cinder dredging mechanism that admits air, scarfing cinder dredging mechanism includes fixed connection at the left rectangle box (2) in casing (1) top, the bottom of rectangle box (2) sets up to the opening, sliding sleeve is equipped with reciprocal lift drive assembly in rectangle box (2), the top fixed mounting of rectangle box (2) has output shaft and reciprocal lift drive assembly fixed connection's driving motor (14), reciprocal lift drive assembly's top right side inlays and is fixed with flexible perpendicular conduction air blowback subassembly, flexible perpendicular conduction air blowback subassembly's bottom extends to in casing (1) and is located the right side of filter screen (4) that admits air, the top right side fixed mounting of rectangle box (2) has gas outlet and flexible perpendicular conduction air pump (13) that the air blowback subassembly communicates fixedly, the top left side fixed mounting of rectangle box (2) has PLC controller (15), air pump (13) and driving motor (14) all with PLC controller (15) electric connection, reciprocal lift drive assembly's bottom left side fixed connection has perpendicular brush subassembly, perpendicular conduction air pump (4) are located the left side of the filter screen that admits air.

2. The building heating ventilation device according to claim 1, wherein the reciprocating lifting driving assembly comprises a lifting seat (5) sleeved in the rectangular box (2) in a sliding mode, a reciprocating screw rod (16) positioned in the rectangular box (2) is rotatably connected to the left side of the top of the shell (1), a reciprocating screw hole in threaded connection with the reciprocating screw rod (16) is formed in the top of the lifting seat (5), and the top end of the reciprocating screw rod (16) is fixedly connected with the bottom end of an output shaft of the driving motor (14).

3. The building heating ventilation device according to claim 2, wherein the telescopic vertical ventilation back-blowing component comprises an outer tube (10) which is embedded and fixed on the right side of the top of the lifting seat (5), the bottom end of the outer tube (10) penetrates through the top of the shell (1) in a sliding mode and extends into the shell, a back-blowing box (11) is fixedly communicated with the bottom of the outer tube (10), a plurality of back-blowing tube heads (12) are fixedly communicated with the left side of the back-blowing box (11), the back-blowing tube heads (12) are positioned on the right side of the air inlet filter screen (4) and matched with the air inlet filter screen, an inner tube (9) is sleeved in the inner tube (10), and the top end of the inner tube (9) is communicated and fixed with the bottom end of the air outlet of the air pump (13).

4. The building heating ventilation device according to claim 2, wherein the vertical guide brush cleaning assembly comprises two vertical guide rods (6) fixedly connected to the left side of the bottom of the lifting seat (5), the bottom ends of the two vertical guide rods (6) are all extended to the lower side of the rectangular box (2) and fixedly connected with the same cleaning brush (8), the right sides of bristles of the cleaning brush (8) are flush with the left side of the air inlet filter screen (4), the two vertical guide rods (6) are sleeved with the same support plate (7) in a sliding mode, and the top of the support plate (7) is fixedly connected with the left side of the bottom of the rectangular box (2).

5. The heating, ventilation and air-ventilation device for building according to claim 1, wherein the PLC (15) is a programmable controller.

6. The building heating ventilation device according to claim 1, wherein the same U-shaped baffle plate (3) is fixedly connected to the tops of two sides of the rectangular box (2), and the PLC (15), the air pump (13) and the driving motor (14) are all arranged in the U-shaped baffle plate (3).

7. The building heating ventilation device according to claim 1, wherein the top inner wall, the bottom inner wall, the front side inner wall and the rear side inner wall of the shell (1) are fixedly connected with sound absorbing boards, two mounting holes are formed in the top of the sound absorbing boards below, supports fixedly connected to the bottom inner wall of the shell (1) are arranged in the mounting holes, the fan (103) and the electric heating wire (104) are respectively and fixedly arranged at the tops of the corresponding supports, and the sound absorbing boards on the front side and the front side inner wall of the shell (1) are embedded and fixedly provided with the same transparent board.