CN222378402U - Ventilating and draining device for heating and ventilation equipment - Google Patents

Abstract

The utility model discloses a ventilation and drainage device for heating and ventilation equipment, which comprises a shell, a filter device embedded on one side wall of the shell, a heating device, a accumulated water recovery device, a humidifying device and an exhaust device embedded on the other side wall of the shell, wherein an air inlet of the filter device is positioned on the outer side of the shell and communicated with an air outlet of the heating and ventilation equipment, an air outlet of the filter device is positioned in the shell and faces the exhaust device, the heating device is connected between the air inlet and the air outlet of the filter device in series, the accumulated water recovery device is arranged on the filter device and between the heating device and the air outlet of the filter device, a water outlet of the accumulated water recovery device is connected with a water inlet of the humidifying device, and a fog outlet of the humidifying device is positioned between the air inlet of the filter device and the air inlet of the exhaust device. The utility model relates to the technical field of heating and ventilation equipment, and can solve the problem that condensation water drops are not recycled by a ventilation and drainage device for heating and ventilation equipment in the prior art.

Description

Ventilating and draining device for heating and ventilation equipment

Technical Field

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

Background

The heating and ventilation equipment has the functions of heating, ventilation and air conditioning, and is one of the electromechanical equipment commonly used in indoor decoration. The utility model patent CN216203855U discloses a ventilation and drainage device based on heating and ventilation equipment, which comprises heating and ventilation equipment, wherein the heating and ventilation equipment consists of a protective shell, a filtering structure, a ventilation device, a drainage structure and a humidifying device, wherein one side of the protective shell is fixedly connected with the filtering structure, the ventilation device is fixedly connected inside the protective shell and is in lap joint with the drainage structure, the drainage structure is movably connected inside the protective shell, and the humidifying device is movably connected at the bottom of the protective shell.

The water vapor generated by air in the frequent cold and hot alternating environment can be condensed into water drops, the ventilation and drainage device is used for recycling the water drops, resources are wasted to a certain extent, and metal components such as the threaded rod are in long-term contact with the water vapor, so that accelerated corrosion damage of the metal components is easily caused. Accordingly, there is a need to provide a ventilation and drainage device for a heating and ventilation apparatus, which can solve the problem that condensation water drops are not recycled by the ventilation and drainage device for a heating and ventilation apparatus in the prior art.

Disclosure of Invention

The utility model aims to provide a ventilation and drainage device for heating and ventilation equipment, which can solve the problem that condensation water drops are not recycled by the ventilation and drainage device for heating and ventilation equipment in the prior art.

The utility model is realized in the following way:

A ventilation and drainage device for heating and ventilation equipment comprises a shell, a filter device embedded on one side wall of the shell, a heating device, a ponding recovery device, a humidifying device and an exhaust device embedded on the other side wall of the shell, wherein an air inlet of the filter device is positioned on the outer side of the shell and communicated with an air outlet of the heating and ventilation equipment, an air outlet of the filter device is positioned in the shell and arranged facing the exhaust device, the heating device is connected between the air inlet and the air outlet of the filter device in series, the ponding recovery device is arranged on the filter device and between the heating device and the air outlet of the filter device, a water outlet of the ponding recovery device is connected with a water inlet of the humidifying device, and a fog outlet of the humidifying device is positioned between the air inlet of the filter device and the air inlet of the exhaust device.

The filtering device comprises an air inlet pipe, an electric fan, a front filter screen and an exhaust pipe, wherein the air inlet pipe is arranged on one side wall of a shell in a penetrating mode, an air inlet of the air inlet pipe is located on the outer side of the shell and is embedded with the front filter screen, an air outlet of the air inlet pipe is located in the shell, the electric fan is arranged in the air inlet pipe, the air outlet of the air inlet pipe is connected with an air inlet of the heating device, the air outlet of the heating device is communicated with the air inlet of the exhaust pipe, the air outlet of the exhaust pipe is arranged facing the exhaust device, the exhaust pipe is of an inverted-Chinese-character 'ji' -shaped structure with two high ends and a low middle, and the accumulated water recycling device is arranged at the lowest position of the exhaust pipe.

A collecting frame is arranged on one side wall of the shell, an ash collecting box with an opening at the top is arranged in the collecting frame, and an air inlet of the air inlet pipe is of an inclined plane structure and is arranged facing the opening of the ash collecting box.

The heating device comprises a heating box and a plurality of heating wires uniformly distributed in the heating box, an air outlet of the air inlet pipe is communicated with the lower part of the heating box, and an air inlet of the air outlet pipe is communicated with the upper part of the heating box.

The accumulated water recovery device comprises a fixed plate, a telescopic rod, a first supporting plate, a connecting rod, a supporting plate, plugs and a placement box, wherein the fixed plate is arranged above a horizontal section at the lowest position of an exhaust pipe, the first supporting plate is arranged between the fixed plate and the horizontal section at the lowest position of the exhaust pipe in a lifting mode through the telescopic rod, the supporting plate is connected below the first supporting plate through a plurality of connecting rods and below the horizontal section at the lowest position of the exhaust pipe, a plurality of plugs are arranged on the supporting plate at intervals, a plurality of drain holes are formed in the bottom of the horizontal section at the lowest position of the exhaust pipe, the plugs can be correspondingly plugged in the drain holes, the placement box is arranged on a humidifying device through a plurality of supporting rods and located under the supporting plate, and hollowed-out parts are formed on the supporting plate.

The filter box is arranged in the placement box, a cellulose membrane is arranged in the filter box, and a water outlet of the placement box is positioned below the cellulose membrane and connected with the humidifying device.

The humidifying device comprises a water tank, a water pump and a spray pipe, wherein the water tank is communicated with a water outlet of the placement box, the water pump is arranged on the water tank, a water inlet of the water pump is communicated with the bottom of the water tank, the water outlet of the water pump is communicated with one end of the spray pipe, and the other end of the spray pipe is positioned between an air outlet of the exhaust pipe and an air inlet of the exhaust device and provided with an atomizing nozzle.

The water tank in be equipped with the level gauge, the top of water tank passes through the external water source of water tank inlet tube, level gauge and valve linkage connection.

The heating device and the second support plate divide the shell into three independent spaces, namely a heating space, a condensing space and a humidifying space, an air outlet of the exhaust pipe penetrates through the second support plate and is positioned in the humidifying space, an air inlet of the exhaust device is communicated with the humidifying space, and the other end of the spray pipe is positioned between an air outlet of the exhaust pipe and the air inlet of the exhaust device.

The exhaust device comprises an air outlet pipe, a protective cover, a protective net and a circular cellulose membrane, wherein one end of the air outlet pipe is arranged on the other side wall of the shell and is communicated with the humidifying space, the protective cover covers the air outlet pipe, and the circular cellulose membrane is arranged in the other end of the air outlet pipe through the protective net.

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

1. The utility model has the advantages that the exhaust pipe and the accumulated water recovery device are arranged, the inverted-U-shaped exhaust pipe can increase the condensation and discharge path of air, so that the vapor in the hot air is fully condensed into water drops and accumulated in the lower horizontal section of the exhaust pipe, the condensed water in the exhaust pipe is discharged to the filter box when the plug is separated from the drain hole, and is stored in the water tank after being filtered, thereby being beneficial to the recycling of the condensed water, reducing the resource waste and avoiding the problem of accelerated corrosion caused by long-term contact of a metal component and the vapor.

2. The utility model is provided with the humidifying device, condensed water collected in the water tank is pumped to the atomizing pipe through the water pump and atomized and sprayed out, so that atomization humidification is provided for discharged air between the air outlet of the exhaust pipe and the air inlet of the exhaust device, the condensed water is fully utilized, the resource waste is reduced, the discharged air is prevented from being excessively dried, and the air quality is greatly optimized by combining triple filtration.

Drawings

FIG. 1 is a schematic view of a ventilation and drainage device for heating and ventilation equipment;

FIG. 2 is a cross-sectional view of a ventilation and drainage device for a heating and ventilation apparatus according to the present utility model;

Fig. 3 is an enlarged schematic view at a in fig. 1.

In the figure, 1, a shell, 2, a filtering device, 201, an air inlet pipe, 202, an electric fan, 203, a front filter screen, 204, a collecting frame, 205, an ash collecting box, 206, an exhaust pipe, 3, a heating device, 301, a heating box, 302, a heating wire, 4, a water recycling device, 401, a fixed plate, 402, a telescopic rod, 403, a first supporting plate, 404, a connecting rod, 405, a supporting plate, 406, a plug, 407, a supporting rod, 408, a placing box, 409, a filter box, 410, a cellulose membrane, 411, a connecting pipe, 5, a humidifying device, 501, a water tank, 502, a water pump, 503, a water supply pipe, 504, a liquid level meter, 505, a spray pipe, 6, an exhaust device, 601, an air outlet pipe, 602, a protective cover, 603, a protective net, 604, a circular cellulose membrane, 7, a second supporting plate, 8 and a water tank water inlet pipe.

Detailed Description

The utility model will be further described with reference to the drawings and the specific examples.

Referring to fig. 1, a ventilation and drainage device for a heating and ventilation device comprises a shell 1, a filter device 2 embedded on one side wall of the shell 1, a heating device 3, a water accumulation recovery device 4, a humidifying device 5 and an exhaust device 6 embedded on the other side wall of the shell 1, wherein an air inlet of the filter device 2 is positioned on the outer side of the shell 1 and communicated with an air outlet of the heating and ventilation device, an air outlet of the filter device 2 is positioned in the shell 1 and arranged facing the exhaust device 6, the heating device 3 is connected between the air inlet and the air outlet of the filter device 2 in series, the water accumulation recovery device 4 is arranged on the filter device 2 and positioned between the heating device 3 and the air outlet of the filter device 2, a water outlet of the water accumulation recovery device 4 is connected with a water inlet of the humidifying device 5, and a fog outlet of the humidifying device 5 is positioned between the air inlet of the filter device 2 and the air inlet of the exhaust device 6.

Since the exhaust gas of the heating and ventilation equipment has a certain temperature, the exhaust gas can be condensed into water drops after condensation, the exhaust gas of the heating and ventilation equipment is obtained through the filtering device 2, and meanwhile, the air exhausted by the heating and ventilation equipment is filtered. The heating device 3 is used for further heating the air filtered by the filtering device 2 so as to be condensed into water drops when the air is discharged, and the accumulated water recovery device 4 is used for recovering the condensed water drops, so that the resource waste is reduced, and the air waste heat is indirectly utilized. The humidifying device 5 humidifies the air discharged from the air outlet of the filtering device 2 by using the condensed water, and then discharges the air into the air through the air discharging device 6 to prevent the air from drying.

Referring to fig. 2, the filtering device 2 includes an air inlet pipe 201, an electric fan 202, a front filter 203 and an air outlet pipe 206, wherein the air inlet pipe 201 is arranged on a side wall of the housing 1 in a penetrating manner, an air inlet of the air inlet pipe 201 is positioned at the outer side of the housing 1 and is embedded with the front filter 203, an air outlet of the air inlet pipe 201 is positioned in the housing 1, the electric fan 202 is arranged in the air inlet pipe 201, an air outlet of the air inlet pipe 201 is connected with an air inlet of the heating device 3, an air outlet of the heating device 3 is communicated with an air inlet of the air outlet pipe 206, an air outlet of the air outlet pipe 206 is arranged facing the air outlet device 6, the air outlet pipe 206 is in an inverted-shaped structure with two high ends and a low middle, and the accumulated water recovery device 4 is arranged at the lowest position of the air outlet pipe 206.

Preferably, the electric fan 202 may be a small fan for accelerating the air flow in the air inlet pipe 201 to sufficiently obtain the air exhausted from the heating and ventilation device, and the fan power may be adaptively adjusted according to the exhaust air amount of the heating and ventilation device. The front filter 203 is used for filtering air before the air enters the air inlet pipe 201, and the filtered air is heated by the heating device 3 and then discharged from the air outlet of the air outlet pipe 206.

The exhaust pipe 206 with the inverted-Chinese-character-ji-shaped structure not only prolongs the air flowing path, ensures the sufficient cooling of the air and achieves the purpose of condensation to generate water drops, but also can accumulate the condensed water at the lowest horizontal section in the middle of the exhaust pipe 206, and does not influence the discharge of the air while being convenient for the collection of the condensed water.

Referring to fig. 1 and 2, a collecting frame 204 is disposed on a side wall of the housing 1, a dust collecting box 205 with an opening at the top is disposed in the collecting frame 204, and an air inlet of the air inlet pipe 201 is in an inclined plane structure and faces the opening of the dust collecting box 205.

The dust collection box 205 is arranged below the air inlet of the air inlet pipe 201 with the inclined surface structure, so that dust attached to the front filter screen 203 can fall into the dust collection box 205, dust can be conveniently collected and cleaned, and flying dust can be reduced.

Referring to fig. 2, the heating device 3 includes a heating box 301 and a plurality of heating wires 302 uniformly distributed in the heating box 301, an air outlet of the air inlet pipe 201 is communicated with a lower portion of the heating box 301, and an air inlet of the air outlet pipe 206 is communicated with an upper portion of the heating box 301.

The heating wire 302 may be an electric heating wire, and after being electrified, the air passing through the heating wire 302 can be heated, and the power of the electric heating wire can be adaptively adjusted according to the actual heating requirement.

Preferably, the heating box 301 may be vertically arranged, and the lower part is air-in, and the upper part is air-out, so that the air flow path can be increased, and the heating effect of the electric heating wire on the air can be improved.

Referring to fig. 2 and 3, the accumulated water recycling device 4 includes a fixing plate 401, a telescopic rod 402, a first support plate 403, a connecting rod 404, a supporting plate 405, plugs 406 and a placement box 408, wherein the fixing plate 401 is installed above a horizontal section at the lowest position of the exhaust pipe 206, the first support plate 403 is arranged between the fixing plate 401 and the horizontal section at the lowest position of the exhaust pipe 206 in a lifting manner through the telescopic rod 402, the supporting plate 405 is connected below the first support plate 403 and below the horizontal section at the lowest position of the exhaust pipe 206 through a plurality of connecting rods 404, a plurality of plugs 406 are arranged on the supporting plate 405 at intervals, a plurality of drain holes are formed at the bottom of the horizontal section at the lowest position of the exhaust pipe 206, the plugs 406 can be correspondingly plugged in the drain holes, the placement box 408 is arranged on the humidifying device 5 through a plurality of support rods 407 and is located under the supporting plate 405, and a hollowed-out portion is formed on the supporting plate 405.

Preferably, the telescopic rod 402 can be a hydraulic telescopic rod, and the lifting of the first supporting plate 403, the connecting rod 404, the supporting plate 405 and the plug 406 is controlled by oil pressure. The expansion range of the hydraulic expansion rod and the height of the connecting rod 404 can be adaptively adjusted according to the plugging and releasing requirements of the plug 406 and the drain hole. When the plug 406 descends, the drain hole at the bottom of the horizontal section at the lowest position of the exhaust pipe 206 is separated, so that condensed water can be discharged through the drain hole, and the influence of excessive condensed water on exhaust is prevented. When the plug 406 is lifted, the plug is inserted into the drain hole to block the drain hole, so that condensed water is accumulated conveniently, and the air is prevented from being directly discharged through the drain hole, so that the effects of condensed water collection, air filtration, humidification and discharge cannot be achieved.

Preferably, the plug 406 can be a stainless steel column with the outside wrapped with a rubber sleeve, so that the structural strength is high, and the drain hole can be effectively plugged through the rubber sleeve. The hollowed-out part on the supporting plate 405 is convenient for condensed water to flow into the lower placing box 408 after flowing down from the drain hole.

Referring to fig. 2, a filter box 409 is disposed in the placement box 408, a cellulose membrane 410 is disposed in the filter box 409, and a water outlet of the placement box 408 is located below the cellulose membrane 410 and connected to the humidifying device 5 through a connection pipe 411.

The filter box 409 is used for collecting condensed water, and the condensed water is filtered through the cellulose membrane 410 after dripping into the filter box 409 and then is discharged to the humidifying device 5, so that the cleanliness of condensed water recycling is improved.

Referring to fig. 2, the humidifying device 5 includes a water tank 501, a water pump 502, a water supply pipe 503 and a spray pipe 505, wherein the water tank 501 is communicated with a water outlet of the placement box 408 through a connection pipe 411, the water pump 502 is arranged on the water tank 501, a water inlet of the water pump 502 is communicated with the bottom of the water tank 501 through the water supply pipe 503, a water outlet of the water pump 502 is communicated with one end of the spray pipe 505, and the other end of the spray pipe 505 is positioned between an air outlet of the exhaust pipe 206 and an air inlet of the exhaust device 6 and provided with an atomization nozzle.

Preferably, the water pump 502 may be a small water pump, and the power of the water pump may be adaptively selected according to the atomization requirement. The water tank 501 is used for collecting condensed water, and is atomized and sprayed out by an atomization nozzle after being pumped to the spray pipe 505 through the water supply pipe 503 by the water pump 502. The air discharged from the air outlet of the air discharge pipe 206 is humidified when flowing through the atomizer, and then discharged from the air discharge device 6, so that the air is prevented from drying.

The humidifying device 5 can be started according to actual use requirements, and preferably, the humidifying device 5 can be controlled in a linkage manner with air humidity monitoring equipment in the prior art.

Preferably, the connection pipe 411 is internally provided with a one-way solenoid valve, which prevents water in the water tank 501 from flowing backward into the filter cartridge 409.

Referring to fig. 2, a liquid level meter 504 is disposed in the water tank 501, the top of the water tank 501 is externally connected with a water source through a valve via a water inlet pipe 8, and the liquid level meter 504 is connected with the valve in a linkage manner.

Preferably, the level gauge 504 may be a pressure type level gauge, and the level gauge 504 is installed at the bottom of the water tank 501 to monitor the water level using the water pressure. If the water level of the water tank 501 is too low or no water is present, the problems of dry burning and incapability of atomizing of the water pump 502 are easily caused, and the water tank 501 is supplemented with an external water source through the water tank water inlet pipe 8 when the water level of the water tank 501 is too low through the linkage of the liquid level meter 504 and the valve.

Referring to fig. 2, a second support plate 7 is vertically disposed between the top of the water tank 501 and the top plate of the housing 1, a fixing plate 401 is horizontally mounted between the second support plate 7 and the outer wall of the heating box 301 of the heating device 3, the heating device 3 and the second support plate 7 divide the housing 1 into three independent spaces, namely, a heating space, a condensing space and a humidifying space, an air outlet of the exhaust pipe 206 penetrates through the second support plate 7 and is located in the humidifying space, an air inlet of the exhaust device 6 is communicated with the humidifying space, and the other end of the spray pipe 505 is located between the air outlet of the exhaust pipe 206 and the air inlet of the exhaust device 6.

The air intake pipe 201 and the electric fan 202 are located in the heating space, the air exhaust pipe 206 and the accumulated water recovery device 4 are located in the condensing space, the water tank 501 is located in part in the condensing space, the humidifying space, and the spray pipe 505 is located in the humidifying space. Through the arrangement of three independent spaces, the shell 1 is reasonable in partition, is convenient for heating, condensing and discharging air, and does not affect each other.

Referring to fig. 2, the exhaust device 6 includes an air outlet pipe 601, a protective cover 602, a protective net 603 and a circular cellulose membrane 604, wherein one end of the air outlet pipe 601 is installed on the other side wall of the casing 1 and is communicated with the humidifying space, the protective cover 602 covers the air outlet pipe 601, and the circular cellulose membrane 604 is installed in the other end of the air outlet pipe 601 through the protective net 603.

Preferably, an air outlet is reserved on the other side wall of the shell 1, the air outlet pipe 601 can be a round pipe with the size larger than that of the air outlet, and the air outlet pipe 601 is communicated with the humidifying space through the air outlet, so that the air exhaust requirement is met. The circular cellulose membrane 604 is used for filtering the discharged air again, and the protective net 603 is used for protecting the circular cellulose membrane 604, so that the circular cellulose membrane 604 is convenient to replace, and meanwhile, foreign matters are prevented from entering the air outlet pipe 601.

Referring to fig. 1 to 3, the working process and working principle of the utility model are as follows:

When the air outlet of the heating and ventilation device is exhausted, the electric fan 202 is started, and the air exhausted by the heating and ventilation device is sucked into the heating box 301 through the air inlet pipe 201. When air enters the air inlet pipe 201, impurities in the air are filtered through the front filter screen 203 at the air inlet, and are attached to the front filter screen 203, and after the electric fan 202 is turned off, the impurities on the front filter screen 203 can fall into the ash collecting box 205, so that the impurities can be conveniently cleaned in a concentrated mode.

The heating wire 302 is electrified, the filtered air enters the heating box 301 and is heated by the heating wire 302, the air flows upwards from the lower part to the upper part of the heating box 301, an air flow path is prolonged, the heating effect of the air is ensured, and the air is discharged to the exhaust pipe 206. The inverted "s" shaped exhaust pipe 206 extends the air exhaust path to ensure adequate cooling of the air, during which time water droplets condense and accumulate in the lowest horizontal section of the exhaust pipe 206. The cooled air enters the humidification space through the air outlet of the exhaust pipe 206.

The telescopic rod 402 is started, the first supporting plate 403, the connecting rod 404, the supporting plate 405 and the plug 406 are pushed downwards, so that the plug 406 is separated from a drain hole in the horizontal section at the lowest position of the exhaust pipe 206, condensed water is discharged through the drain hole and flows down into a filter box 409 of the placement box 408 through a hollowed-out part of the supporting plate 405, and the condensed water enters the water tank 501 after being filtered by the cellulose membrane 410, so that the recovery of the condensed water is completed. The recovered plug 406 is raised through the telescoping rod 402 and reseals the drain hole.

The water pump 502 is started, water in the water tank 501 is pumped to the spray pipe 505 through the water pump 502, and then water mist is sprayed out through the atomizing nozzle of the spray pipe 505. The air discharged from the exhaust pipe 206 is humidified after being atomized, and then is discharged out of the shell 1 through the air outlet pipe 601, and the discharged air is filtered again through the circular cellulose membrane 604, so that the air is clean.

The water level in the water tank 501 is monitored by the liquid level meter 504, a minimum water level threshold value and a maximum water level threshold value can be preset, when the liquid level in the water tank 501 is monitored by the liquid level meter 504 to be lower than the water level threshold value, an external water source is introduced through the water tank water inlet pipe 8, the water pump 502 is prevented from being damaged by dry heating, and when the water level in the water tank 501 reaches the maximum water level threshold value, the supply of the external water source is stopped.

The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, therefore, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present utility model should be included in the scope of the present utility model.

Claims (10)

1. A ventilation and drainage device for heating and ventilation equipment is characterized by comprising a shell (1), a filter device (2) embedded on one side wall of the shell (1), a heating device (3), a water accumulation recovery device (4), a humidifying device (5) and an exhaust device (6) embedded on the other side wall of the shell (1), wherein an air inlet of the filter device (2) is positioned on the outer side of the shell (1) and communicated with an air outlet of the heating and ventilation equipment, an air outlet of the filter device (2) is positioned in the shell (1) and is arranged facing the exhaust device (6), the heating device (3) is connected between the air inlet and the air outlet of the filter device (2) in series, the water accumulation recovery device (4) is arranged on the filter device (2) and is positioned between the heating device (3) and the air outlet of the filter device (2), a water outlet of the water accumulation recovery device (4) is connected with a water inlet of the humidifying device (5), and a mist outlet of the humidifying device (5) is positioned between the air inlet of the filter device (2) and the air inlet of the exhaust device (6).

2. The ventilation and drainage device for heating and ventilation equipment according to claim 1, wherein the filtering device (2) comprises an air inlet pipe (201), an electric fan (202), a front filter screen (203) and an exhaust pipe (206), the air inlet pipe (201) is arranged on one side wall of the shell (1) in a penetrating mode, an air inlet of the air inlet pipe (201) is located on the outer side of the shell (1) and is embedded with the front filter screen (203), an air outlet of the air inlet pipe (201) is located in the shell (1), the electric fan (202) is arranged in the air inlet pipe (201), an air outlet of the air inlet pipe (201) is connected with an air inlet of the heating device (3), an air outlet of the heating device (3) is communicated with an air inlet of the exhaust pipe (206), an air outlet of the exhaust pipe (206) is arranged facing the exhaust device (6), the exhaust pipe (206) is of an inverted-shaped structure with two ends high and the middle low, and the accumulated water recovery device (4) is arranged at the lowest position of the exhaust pipe (206).

3. The ventilation and drainage device for the heating and ventilation equipment, as claimed in claim 2, is characterized in that a collecting frame (204) is arranged on one side wall of the shell (1), an ash collecting box (205) with an opening at the top is arranged in the collecting frame (204), and an air inlet of the air inlet pipe (201) is of an inclined plane structure and is arranged facing the opening of the ash collecting box (205).

4. The ventilation and drainage device for heating and ventilation equipment according to claim 2, wherein the heating device (3) comprises a heating box (301) and a plurality of heating wires (302) uniformly distributed in the heating box (301), an air outlet of the air inlet pipe (201) is communicated with the lower part of the heating box (301), and an air inlet of the air outlet pipe (206) is communicated with the upper part of the heating box (301).

5. The ventilation and drainage device for the heating and ventilation equipment according to claim 2, wherein the accumulated water recovery device (4) comprises a fixed plate (401), a telescopic rod (402), a first supporting plate (403), a connecting rod (404), a supporting plate (405), plugs (406) and a placement box (408), the fixed plate (401) is arranged above the lowest horizontal section of the exhaust pipe (206), the first supporting plate (403) is arranged between the fixed plate (401) and the lowest horizontal section of the exhaust pipe (206) in a lifting mode through the telescopic rod (402), the supporting plate (405) is connected below the first supporting plate (403) through a plurality of connecting rods (404) and below the lowest horizontal section of the exhaust pipe (206), a plurality of plugs (406) are arranged on the supporting plate (405) at intervals, a plurality of drain holes are formed in the bottom of the lowest horizontal section of the exhaust pipe (206), the plugs (406) can be correspondingly plugged in the drain holes, the placement box (407) is arranged on the humidifying device (5) through a plurality of supporting rods (407), and a hollowed-out portion is formed on the supporting plate (405).

6. The ventilation and drainage device for heating and ventilation equipment according to claim 5, wherein a filter box (409) is arranged in the placement box (408), a cellulose membrane (410) is arranged in the filter box (409), and a water outlet of the placement box (408) is positioned below the cellulose membrane (410) and connected with the humidifying device (5).

7. The ventilation and drainage device for heating and ventilation equipment according to claim 6, wherein the humidifying device (5) comprises a water tank (501), a water pump (502) and a spray pipe (505), the water tank (501) is communicated with a water outlet of the placement box (408), the water pump (502) is arranged on the water tank (501), a water inlet of the water pump (502) is communicated with the bottom of the water tank (501), a water outlet of the water pump (502) is communicated with one end of the spray pipe (505), and the other end of the spray pipe (505) is positioned between an air outlet of the exhaust pipe (206) and an air inlet of the exhaust device (6) and provided with an atomization nozzle.

8. The ventilation and drainage device for heating and ventilation equipment according to claim 7, wherein a liquid level meter (504) is arranged in the water tank (501), the top of the water tank (501) is externally connected with a water source through a water tank water inlet pipe (8), and the liquid level meter (504) is connected with a valve in a linkage way.

9. The ventilation and drainage device for heating and ventilation equipment according to claim 7 or 8, wherein a second supporting plate (7) is vertically arranged between the top of the water tank (501) and the top plate of the shell (1), the fixing plate (401) is horizontally arranged between the second supporting plate (7) and the outer wall of the heating box (301) of the heating device (3), the heating device (3) and the second supporting plate (7) divide the shell (1) into three independent spaces, namely a heating space, a condensing space and a humidifying space, an air outlet of the exhaust pipe (206) penetrates through the second supporting plate (7) and is positioned in the humidifying space, an air inlet of the exhaust device (6) is communicated with the humidifying space, and the other end of the spray pipe (505) is positioned between the air outlet of the exhaust pipe (206) and the air inlet of the exhaust device (6).

10. The ventilation and drainage device for heating and ventilation equipment according to claim 9, wherein the exhaust device (6) comprises an air outlet pipe (601), a protective cover (602), a protective net (603) and a circular cellulose membrane (604), one end of the air outlet pipe (601) is arranged on the other side wall of the shell (1) and is communicated with the humidifying space, the protective cover (602) covers the air outlet pipe (601), and the circular cellulose membrane (604) is arranged in the other end of the air outlet pipe (601) through the protective net (603).