CN112128915A

CN112128915A - Indoor ventilation device for ventilation and heat preservation in winter

Info

Publication number: CN112128915A
Application number: CN202011027109.6A
Authority: CN
Inventors: 印兴宝; 龙志华
Original assignee: Taoyuan No3 Middle School
Current assignee: Taoyuan No3 Middle School
Priority date: 2020-09-26
Filing date: 2020-09-26
Publication date: 2020-12-25
Anticipated expiration: 2040-09-26
Also published as: CN112128915B

Abstract

The invention discloses a winter ventilation and warm-keeping indoor ventilation device, which relates to the technical field of ventilation devices and comprises a ventilation box, a heating mechanism, an air suction mechanism and a filtering mechanism, wherein an air inlet is formed in the top end of the ventilation box, a connecting pipe is connected to the top end of the air inlet, the heating mechanism is connected with one end, far away from the air inlet, of the connecting pipe, a protective cover is arranged at one end of the outer wall of the ventilation box, an air outlet is formed in one end, close to the protective cover, of one side of the outer wall of the ventilation box, and a ventilation. The invention can realize that external air is sucked in while exhausting air and the external air is heated by indoor air through arranging the air exchange box, the air exchange bin, the exhaust fan, the first air inlet pipe, the first connector, the first bearing, the air suction mechanism, the rotary cylinder, the first fan blade, the second connecting hole, the air inlet hole, the first connecting hole, the connecting rod, the fixed block, the second fan blade, the second bearing and the second air inlet pipe.

Description

Indoor ventilation device for ventilation and heat preservation in winter

Technical Field

The invention relates to the technical field of air interchangers, in particular to an indoor air interchanger for ventilation and heat preservation in winter.

Background

The heat preservation of a house is very important in winter due to low air temperature, the air tightness effect of an air tight layer is one of important factors besides the heat preservation of a wall body in the house heat preservation, the higher the sealing effect of the air tight layer is, the less the air inside and outside the house is communicated with, the better the heat preservation effect is, but the indoor air of the house cannot be exchanged, and the discomfort symptoms such as dizziness, chest distress, weakness, large emotion and the like of residents can be caused by oxygen deficiency and air turbidity when the house is used in an environment with non-ventilation air for a long time, so that the comfort level of the living environment is greatly reduced, and certain harm can be brought to the health of the residents, and therefore, the indoor air needs to be exchanged to keep the ventilation of the indoor.

The current breather directly gets rid of the room air, and outdoor air is direct inhales indoorly through outside power unit, and it causes a large amount of calorific loss, and can lead to the indoor temperature to reduce, is unfavorable for indoor cold-proof, and the inside fixed filter screen that generally is provided with of admission line in addition, these filter screens can't be changed and wash, and the effective live time of its filter screen is short, and long-time use can influence the air quality to influence people's healthy.

Therefore, the invention provides the indoor ventilation device for ventilation and heat preservation in winter, which utilizes the heat energy of indoor air and prolongs the service life of the filter screen.

Disclosure of Invention

The invention aims to: in order to solve the problems of waste of heat energy of indoor air and short service cycle of a filter screen, the indoor ventilation device for ventilation and heat preservation in winter is provided.

In order to achieve the purpose, the invention provides the following technical scheme: an indoor ventilation device for ventilation and heat preservation in winter comprises a ventilation box, a heating mechanism, a suction mechanism and a filtering mechanism, wherein an air inlet is formed in the top end of the ventilation box, a connecting pipe is connected to the top end of the air inlet, the heating mechanism is connected with one end, far away from the air inlet, of the connecting pipe, a protective cover is arranged at one end of the outer wall of the ventilation box, an air outlet is formed in one end, close to the protective cover, of one side of the outer wall of the ventilation box, a ventilation bin is arranged inside the ventilation box, an exhaust fan, a first air inlet pipe and a second air inlet pipe are arranged inside the ventilation bin, the exhaust fan is located at the port of the ventilation bin, the first air inlet pipe is located at one end of the exhaust fan, the second air inlet pipe is located at one end of the first air inlet pipe, the suction mechanism is located inside the ventilation bin, the two ends of the, no. two intake pipes keep away from the one end of air suction mechanism and run through to the ventilation box outside and be located the safety cover under, inside filtering mechanism was located No. two intake pipes, an intake pipe was provided with the connector No. one with air suction mechanism contact position, No. two intake pipes were provided with the connector No. two with air suction mechanism contact position, a connector outer wall has cup jointed a bearing No. one, No. two connector outer walls have cup jointed No. two bearings, the outer wall of a bearing, No. two bearings cup joints each other with air suction mechanism's both ends respectively.

Preferably, heating mechanism includes heating cabinet, spread groove, spacing groove, filter screen, stopper, heater, shutter and draw-in groove, the spread groove is located heating cabinet outer wall one side, the spread groove is connected with the connecting pipe, spacing groove, draw-in groove are located heating cabinet inner wall both sides, the draw-in groove is located spacing groove one end, filter screen, heater are located the heating cabinet inside, the heater is located filter screen one side, the stopper is located the filter screen both sides, the shutter is located one side that the heating cabinet was kept away from to the heating cabinet, the filter screen top is provided with the knob, the knob top is provided with the turning block, the filter screen is provided with the swivelling chute with turning block contact position, the turning block is located swivelling chute internal connection and has the connecting block, the one end that the turning block.

Preferably, the suction mechanism includes a rotatory section of thick bamboo, a flabellum, No. two connecting holes, inlet port, a connecting hole, connecting rod and fixed block, a flabellum is located the outer wall of a rotatory section of thick bamboo, No. two connecting holes, inlet port, a connecting hole are located inside the rotatory section of thick bamboo, the inlet port is located No. two connecting hole one sides, a connecting hole is located the inlet port and keeps away from one side of No. two connecting holes, connecting rod, fixed block, No. two flabellums are located inside the inlet port, connecting rod one end and inlet port inner wall connection, the fixed block is located the connecting rod and keeps away from the one end of inlet port, No. two flabellums are.

Preferably, filtering mechanism includes piston piece, transfer line, cartridge filter, movable block, montant, slider and reset spring, the piston piece cup joints each other with the one end that No. two intake pipes kept away from air suction mechanism, the transfer line is located the one end that the piston piece is close to No. two intake pipes, the cartridge filter cup joints each other with the transfer line, the transfer line runs through and strains a section of thick bamboo to the cartridge filter other end and be connected with the movable block, the montant is located both ends about the movable block outer wall, the montant runs through to be connected with the slider inside No. two intake pipes, No. two intake pipes are provided with flexible groove with montant, slider contact position, reset spring is located flexible inslot portion, reset spring is located slider one end.

Preferably, the outer wall of the limiting block is matched with the inner wall of the limiting groove, and the outer wall of the clamping block is matched with the inner wall of the clamping groove.

Preferably, the outer wall of a flabellum and the inner wall phase-match in storehouse of ventilating, the outer wall of No. two flabellums and the inner wall phase-match of inlet port, the blade direction of a flabellum and No. two flabellums is opposite direction.

Preferably, the outer wall of the piston block is matched with the inner wall of the filter cartridge, and the outer wall of the piston block is provided with a hairbrush.

Preferably, No. two connecting hole inner walls and No. two bearing outer walls cup joint each other, No. one connecting hole inner wall and No. one bearing outer wall cup joint each other.

Preferably, the top end of the filter screen penetrates the top end of the heating box to the outside of the heating box.

Compared with the prior art, the invention has the beneficial effects that:

1. the invention can realize that the outside air is sucked in when exhausting through the air-changing box, the air-changing bin, the exhaust fan, the first air inlet pipe, the first connector, the first bearing, the air-sucking mechanism, the rotary cylinder, the first fan blade, the second connecting hole, the air inlet hole, the first connecting hole, the connecting rod, the fixed block, the second fan blade, the second bearing and the second air inlet pipe, the outside air is heated through the indoor air, the indoor air can be sucked into the air-changing bin through the exhaust fan, the first fan blade can drive the first fan blade to rotate when the indoor air flows through the first fan blade, the second fan blade can drive the second fan blade to rotate, the second fan blade is opposite to the first fan blade, namely the second fan blade can generate suction force to suck the outside air into the second air inlet pipe, the outside air can be heated by the indoor air when passing through the second air inlet pipe and the first air inlet pipe, and then the indoor air heat, the resource waste is effectively reduced;

2. the telescopic groove, the filtering mechanism, the piston block, the transmission rod, the filter cartridge, the movable block, the vertical rod, the sliding block and the reset spring are arranged to automatically clean the filter cartridge, the piston block can be sucked into the second air inlet pipe when air suction is carried out, the reset spring is in a compressed state at the moment, the piston block can be pushed to move towards the outside of the second air inlet pipe through the transmission of the sliding block, the vertical rod, the movable block and the transmission rod under the action of the reset spring when air suction is stopped, the brush on the outer wall of the piston block can clean the filter cartridge and push brushed dust out of the filter cartridge, and the service life of the filter cartridge can be effectively prolonged through cleaning the filter cartridge.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a structural cross-sectional view of the ventilation box of the present invention;

FIG. 3 is an exploded view in cross-section of the construction of the ventilation box of the present invention;

FIG. 4 is a schematic view of the structure of the air suction mechanism of the present invention;

FIG. 5 is a structural sectional view of the air suction mechanism of the present invention;

FIG. 6 is an exploded view in cross-section of the structure of the air suction mechanism of the present invention;

FIG. 7 is an exploded view in cross-section of the air inlet conduit II and filter mechanism of the present invention;

FIG. 8 is an exploded view of the heating mechanism of the present invention;

FIG. 9 is an enlarged view of the invention at position A in FIG. 8;

fig. 10 is a cross-sectional exploded view of the invention at position B in fig. 8.

In the figure: 1. a ventilation box; 101. a ventilation bin; 2. an air inlet; 3. a connecting pipe; 4. a heating mechanism; 401. a heating box; 402. connecting grooves; 403. a limiting groove; 404. a filter screen; 4041. a rotating tank; 405. a limiting block; 406. a heater; 407. a blind window; 408. a card slot; 5. an exhaust port; 6. a protective cover; 7. an exhaust fan; 8. a first air inlet pipe; 801. a first connector; 9. a first bearing; 10. a suction mechanism; 1001. a rotary drum; 1002. a first fan blade; 1003. a second connecting hole; 1004. an air inlet; 1005. a first connecting hole; 1006. a connecting rod; 1007. a fixed block; 1008. a second fan blade; 11. a second bearing; 12. a second air inlet pipe; 1201. a second connector; 1202. a telescopic groove; 13. a filtering mechanism; 1301. a piston block; 1302. a transmission rod; 1303. a filter cartridge; 1304. a movable block; 1305. a vertical rod; 1306. a slider; 1307. a return spring; 14. a knob; 15. rotating the block; 16. connecting blocks; 17. and (7) clamping blocks.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but 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 construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. The following describes an embodiment of the present invention based on its overall structure.

The exhaust fan (BFAG-300) referred to in the present invention may be available in the market or by private subscription.

Referring to fig. 1-10, an indoor ventilation device with ventilation and warm keeping functions in winter includes a ventilation box 1, a heating mechanism 4, an air suction mechanism 10 and a filtering mechanism 13, an air inlet 2 is disposed on the top end of the ventilation box 1, a connecting pipe 3 is connected to the top end of the air inlet 2, the heating mechanism 4 is connected to one end of the connecting pipe 3 away from the air inlet 2, a protective cover 6 is disposed at one end of the outer wall of the ventilation box 1, an exhaust port 5 is disposed at one end of one side of the outer wall of the ventilation box 1 close to the protective cover 6, a ventilation chamber 101 is disposed inside the ventilation box 1, an exhaust fan 7, a first air inlet pipe 8 and a second air inlet pipe 12 are disposed inside the ventilation chamber 101, the exhaust fan 7 is located at the port of the ventilation chamber 101, the first air inlet pipe 8 is located at one end of the exhaust fan 7, the second air inlet pipe 12 is located at, No. two intake pipes 12 are connected, No. one intake pipe 8 is kept away from the one end of getter mechanism 10 and is connected with the bottom of air inlet 2, No. two intake pipe 12 is kept away from the one end of getter mechanism 10 and runs through to 1 outside of taking a breath and be located safety cover 6 under, filtering mechanism 13 is located No. two intake pipe 12 insides, No. one intake pipe 8 is provided with No. one connector 801 with getter mechanism 10 contact position, No. two intake pipe 12 is provided with No. two connectors 1201 with getter mechanism 10 contact position, No. one bearing 9 has been cup jointed to a connector 801 outer wall, No. two bearing 11 has been cup jointed to a connector 1201 outer wall, No. one bearing 9, No. two bearing 11's outer wall cup joints each other with the both ends of getter mechanism 10.

Referring to fig. 8-10 again, the heating mechanism 4 includes a heating box 401, a connecting groove 402, a limiting groove 403, a filter screen 404, a limiting block 405, a heater 406, a louver 407, and a clamping groove 408, the connecting groove 402 is located on one side of the outer wall of the heating box 401, the connecting groove 402 is connected to the connecting pipe 3, the limiting groove 403 and the clamping groove 408 are located on two sides of the inner wall of the heating box 401, the clamping groove 408 is located on one end of the limiting groove 403, the filter screen 404 and the heater 406 are located inside the heating box 401, the heater 406 is located on one side of the filter screen 404, the limiting block 405 is located on two sides of the filter screen 404, the louver 407 is located on one side of the heating box 401 away from the heating box 401, a knob 14 is disposed on the top end of the filter screen 404, a rotating block 15 is disposed on the top end of the knob 14, a rotating groove 40, the inlet air can be filtered and heated in an auxiliary manner by the heating means 4.

Referring to fig. 4-6, the suction mechanism 10 includes a rotary cylinder 1001, a fan blade 1002, a connecting hole 1003, an air inlet 1004, a connecting hole 1005, a connecting rod 1006 and a fixing block 1007, the fan blade 1002 is located on the outer wall of the rotary cylinder 1001, the connecting hole 1003, the air inlet 1004 and the connecting hole 1005 are located inside the rotary cylinder 1001, the air inlet 1004 is located on one side of the connecting hole 1003, the connecting hole 1005 is located on one side of the air inlet 1004 away from the connecting hole 1003, the connecting rod 1006, the fixing block 1007 and the fan blade 1008 are located inside the air inlet 1004, one end of the connecting rod 1006 is connected to the inner wall of the air inlet 1004, the fixing block 1007 is located on one end of the connecting rod 1006 away from the air inlet 1004, the fan blade 1008 is located on the outer wall of the fixing block 1007, and the suction force can be.

Referring to fig. 7 again, the filter mechanism 13 includes a piston block 1301, a transmission rod 1302, a filter cartridge 1303, a movable block 1304, a vertical rod 1305, a slider 1306, and a return spring 1307, the piston block 1301 is sleeved with one end of the second air inlet pipe 12 away from the air suction mechanism 10, the transmission rod 1302 is located at one end of the piston block 1301 close to the second air inlet pipe 12, the filter cartridge 1303 is sleeved with the transmission rod 1302, the transmission rod 1302 penetrates through the filter cartridge 1303 and connects with the movable block 1304 at the other end of the filter cartridge 1303, the vertical rod 1305 is located at the upper and lower ends of the outer wall of the movable block 1304, the vertical rod 1305 penetrates through the interior of the second air inlet pipe 12 and connects with the slider 1306, a telescopic slot 1202 is arranged at the contact position of the second air inlet pipe 12 with the vertical rod 1305 and the slider 1306, the return spring 1307 is located inside the telescopic slot 1202.

Referring to fig. 8-10, the outer wall of the stopper 405 is matched with the inner wall of the stopper groove 403, the outer wall of the locking block 17 is matched with the inner wall of the locking groove 408, and the filter screen 404 is fixed inside the heating box 401.

Please refer to fig. 2 and 5, the outer wall of the first fan blade 1002 matches with the inner wall of the ventilation chamber 101, the outer wall of the second fan blade 1008 matches with the inner wall of the air inlet 1004, and the blade directions of the first fan blade 1002 and the second fan blade 1008 are opposite, so that the suction force generated by the second fan blade 1008 can be generated when the first fan blade 1002 drives the second fan blade 1008 to rotate.

Referring to fig. 7, the outer wall of the piston block 1301 is matched with the inner wall of the filter cartridge 1303, and the outer wall of the piston block 1301 is provided with a brush, so that the piston block 1301 can move along the inner wall of the filter cartridge 1303, and the filter cartridge 1303 can be cleaned by the movement of the piston block 1301.

Please refer to fig. 6 and fig. 3, the inner wall of the second connecting hole 1003 is sleeved with the outer wall of the second bearing 11, and the inner wall of the first connecting hole 1005 is sleeved with the outer wall of the first bearing 9, so that the rotary cylinder 1001 can rotate with the first bearing 9 and the second bearing 11 as the base.

Referring to fig. 1, the top end of the filter 404 penetrates the top end of the heating chamber 401 to the outside of the heating chamber 401, so that the filter 404 is easy to detach for cleaning and replacing.

The working principle is as follows: when the air interchanger is used, indoor air can be sucked into the air interchanger 101 through the exhaust fan 7 and is exhausted through the exhaust port 5, in the process, air flow is contacted with the first fan blade 1002 to drive the first fan blade 1002 to rotate, the first fan blade 1002 can drive the rotary cylinder 1001 to rotate by taking the first bearing 9 and the second bearing 11 as bases, at the moment, the second fan blade 1008 positioned in the rotary cylinder 1001 is also driven to rotate together, the blade directions of the second fan blade 1008 and the first fan blade 1002 are opposite, therefore, the second fan blade 1008 can generate suction force to the second air inlet pipe 12 when rotating, the suction force can suck a piston block into the second air inlet pipe 12, the filter cartridge 1303 is contacted with external air, the external air can be sucked into the second air inlet pipe 12 and enters the heating box 401 through the rotary cylinder 1001, the first air inlet pipe 8, the air inlet 2 and the connecting pipe 3, the filter cartridge 1303 can primarily filter the external air, since the outside air temperature is lower than the room air temperature, when the outside air flows through the second air inlet pipe 12 and the first air inlet pipe 8, the heat transfer phenomenon is generated with the room air inside the ventilation bin 101, the outside air is heated and raised in temperature, and the room air can be used for heating and raising the temperature of the outside air in the process, so that the resource waste is effectively reduced, the outside air enters the heating box 401, the filter screen 404 can perform secondary filtration on the outside air, then the outside air enters the room through the shutter 407, the heater 406 inside the heating box 401 can be selectively opened according to the actual situation, the piston block 1301 can be reset under the action of the reset spring 1307 after the ventilation is stopped, at the moment, the brush on the outer wall of the piston block 1301 can clean the filter cartridge 1303 and push the dust out of the filter cartridge 1303, the service life of the filter cartridge can be effectively prolonged through the process, and the protective cover 6 on the ventilation box 1303 can also prevent the outside, protecting the ventilation device, filter screen 404 in heating cabinet 401 can be dismantled and get off and carry out the cleaning work, drive turning block 15 through rotary knob 14, connecting block 16, fixture block 17 rotates, when fixture block 17 and draw-in groove 408 separated, filter screen 404 accessible stopper 405 along the inner wall rebound of spacing groove 403, can follow the heating cabinet 401 and take out, only need insert the filter screen 404 again after the clearance is accomplished in the spacing groove 403, and select knob 14 to make fixture block 17 be connected with draw-in groove 408 and can accomplish the installation of filter screen 404.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a cold-proof indoor breather ventilates winter, includes ventilation box (1), heating mechanism (4), suction mechanism (10) and filtering mechanism (13), its characterized in that: the air intake device is characterized in that an air inlet (2) is arranged at the top end of the air exchange box (1), a connecting pipe (3) is connected to the top end of the air inlet (2), a heating mechanism (4) is connected with one end of the connecting pipe (3) far away from the air inlet (2), a protective cover (6) is arranged at one end of the outer wall of the air exchange box (1), an exhaust port (5) is arranged at one end of one side of the outer wall of the air exchange box (1) close to the protective cover (6), an air exchange bin (101) is arranged inside the air exchange box (1), an exhaust fan (7), a first air inlet pipe (8) and a second air inlet pipe (12) are arranged inside the air exchange bin (101), the first air inlet pipe (8) is arranged at one end of the exhaust fan (7), the second air inlet pipe (12) is arranged at one end of the first air inlet pipe (8), and an air suction mechanism (10), intake pipe (8), No. two intake pipe (12) are connected at the both ends of mechanism of breathing in (10) respectively, intake pipe (8) are kept away from the one end of mechanism of breathing in (10) and are connected with the bottom of air inlet (2), No. two intake pipe (12) are kept away from the one end of mechanism of breathing in (10) and are run through to scavenger-fan case (1) outside and lie in safety cover (6) under, filtering mechanism (13) are located No. two intake pipe (12) inside, intake pipe (8) and mechanism of breathing in (10) contact position are provided with No. one connector (801), No. two intake pipe (12) are provided with No. two connector (1201) with mechanism of breathing in (10) contact position, No. one bearing (9) have been cup jointed No. one bearing (9) to connector (801) outer wall, No. two connector (1201) have been cup jointed No. two bearing (11) to connector (1201) outer wall, No., The outer wall of the second bearing (11) is respectively sleeved with the two ends of the air suction mechanism (10).

2. A winter ventilating and warming indoor unit as claimed in claim 1, wherein: the heating mechanism (4) comprises a heating box (401), a connecting groove (402), a limiting groove (403), a filter screen (404), a limiting block (405), a heater (406), a louver (407) and a clamping groove (408), wherein the connecting groove (402) is positioned on one side of the outer wall of the heating box (401), the connecting groove (402) is connected with a connecting pipe (3), the limiting groove (403) and the clamping groove (408) are positioned on two sides of the inner wall of the heating box (401), the clamping groove (408) is positioned at one end of the limiting groove (403), the filter screen (404) and the heater (406) are positioned inside the heating box (401), the heater (406) is positioned on one side of the filter screen (404), the limiting block (405) is positioned on two sides of the filter screen (404), the louver (407) is positioned on one side of the heating box (401) far away from the heating box (401), and a, knob (14) top is provided with turning block (15), filter screen (404) and turning block (15) contact position are provided with swivelling chute (4041), turning block (15) are located swivelling chute (4041) internal connection and have connecting block (16), the one end that turning block (15) were kept away from in connecting block (16) is connected with fixture block (17).

3. A winter ventilating and warming indoor unit as claimed in claim 1, wherein: the air suction mechanism (10) comprises a rotary cylinder (1001), a first fan blade (1002), a second connecting hole (1003), an air inlet hole (1004), a first connecting hole (1005), a connecting rod (1006) and a fixing block (1007), wherein the first fan blade (1002) is located on the outer wall of the rotary cylinder (1001), the second connecting hole (1003), the air inlet hole (1004) and the first connecting hole (1005) are located inside the rotary cylinder (1001), the air inlet hole (1004) is located on one side of the second connecting hole (1003), the first connecting hole (1005) is located on one side, away from the second connecting hole (1003), of the air inlet hole (1004), the connecting rod (1006), the fixing block (1007) and the second fan blade (1008) are located inside the air inlet hole (1004), one end of the connecting rod (1006) is connected with the inner wall of the air inlet hole (1004), and the fixing block (1007) is located at one end, away from the, the second fan blade (1008) is located on the outer wall of the fixing block (1007).

4. A winter ventilating and warming indoor unit as claimed in claim 1, wherein: the filter mechanism (13) comprises a piston block (1301), a transmission rod (1302), a filter cartridge (1303), a movable block (1304), a vertical rod (1305), a sliding block (1306) and a return spring (1307), the piston block (1301) and one end, far away from the air suction mechanism (10), of the second air inlet pipe (12) are sleeved with each other, the transmission rod (1302) is located at one end, close to the second air inlet pipe (12), of the piston block (1301), the filter cartridge (1303) is sleeved with the transmission rod (1302), the transmission rod (1302) penetrates through the filter cartridge (1303) to the other end of the filter cartridge (1303) to be connected with the movable block (1304), the vertical rod (1305) is located at the upper end and the lower end of the outer wall of the movable block (1304), the vertical rod (1305) penetrates through the inside of the second air inlet pipe (12) to be connected with the sliding block (1306), and telescopic grooves (1202) are arranged at the contact positions of, the return spring (1307) is positioned inside the telescopic groove (1202), and the return spring (1307) is positioned at one end of the sliding block (1306).

5. A winter ventilating and warming indoor ventilating device according to claim 2, wherein: the outer wall of the limiting block (405) is matched with the inner wall of the limiting groove (403), and the outer wall of the clamping block (17) is matched with the inner wall of the clamping groove (408).

6. A winter ventilating and warming indoor unit as claimed in claim 3, wherein: the outer wall of the first fan blade (1002) is matched with the inner wall of the ventilation bin (101), the outer wall of the second fan blade (1008) is matched with the inner wall of the air inlet hole (1004), and the blade directions of the first fan blade (1002) and the second fan blade (1008) are opposite.

7. A winter ventilating and warming indoor ventilating device according to claim 4, wherein: the outer wall of piston block (1301) and the inner wall phase-match of cartridge filter (1303), be provided with the brush on the outer wall of piston block (1301).

8. A winter ventilating and warming indoor unit as claimed in claim 3, wherein: the inner wall of the second connecting hole (1003) is sleeved with the outer wall of the second bearing (11), and the inner wall of the first connecting hole (1005) is sleeved with the outer wall of the first bearing (9).

9. A winter ventilating and warming indoor ventilating device according to claim 2, wherein: the top end of the filter screen (404) penetrates through the top end of the heating box (401) to the outside of the heating box (401).