Fresh air dehumidification and purification all-in-one machine

By using a multi-stage filtration and desiccant system in the integrated fresh air dehumidifier and air purifier, the problems of bacterial growth on the filter and excessive cooling of the dehumidifier are solved, achieving precise air purification and temperature and humidity regulation.

CN224188705UActive Publication Date: 2026-05-01ZHEJIANG PURUITAI ENVIRONMENT EQUIP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHEJIANG PURUITAI ENVIRONMENT EQUIP CO LTD
Filing Date
2025-06-05
Publication Date
2026-05-01

AI Technical Summary

Technical Problem

Existing dehumidifiers can breed bacteria on their filters during the dehumidification process, leading to air pollution and harming human health. Furthermore, traditional dehumidifiers tend to become too cold in high-temperature and high-humidity environments, failing to meet the needs of cooling, dehumidification, and temperature control.

Method used

Design a new integrated air dehumidifier and purifier, which adopts a multi-stage filter system and a drying box structure. It absorbs moisture through desiccant to prevent bacterial growth. Combined with a condenser and a reheat condenser, it achieves cooling, dehumidification and reheating functions to meet the needs of different environments.

Benefits of technology

It effectively prevents bacterial growth, improves air cleanliness, extends the lifespan of core components, and achieves suitable temperature and humidity regulation in high-temperature and high-humidity environments, avoiding excessive cooling.

✦ Generated by Eureka AI based on patent content.

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Abstract

The fresh air dehumidification and purification all-in-one machine comprises a dehumidifier body, a compressor, a filter screen, a total heat exchange core, a condenser, fans and an electric control assembly are arranged in the dehumidifier body, the filter screen comprises a plurality of first filter screens and a plurality of second filter screens, and the fans comprise an exhaust fan and an air supply fan; a plurality of storage boxes and a plurality of limiting grooves are fixedly mounted in the first filter screen, limiting blocks are mounted in the limiting grooves, a first drying box is fixedly connected to one surface of each limiting block, a sliding groove is formed in one surface of each limiting groove, a sliding rod is mounted in each sliding groove, and a second drying box is fixedly connected to one surface of each sliding rod. The utility model solves the problems that the filter screen is not provided with a drying mechanism, more bacteria are bred under the condition that the filter screen is infected with water for a long time, and the bacteria are discharged when fresh air is discharged through a dehumidifier and are inhaled into the body of a user, so that the body of the user is affected.
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Description

Technical Field

[0001] This utility model belongs to the field of dehumidifier technology, and in particular relates to a fresh air dehumidifier and purifier integrated machine. Background Technology

[0002] Dehumidifiers, also known as moisture extractors, dryers, or dehumidifiers, are generally divided into two main categories: residential dehumidifiers and industrial dehumidifiers, and are a common component of air-conditioned homes. Typically, a conventional dehumidifier consists of a compressor, heat exchanger, fan, water tank, casing, and controller. Its working principle is as follows: the fan draws humid air into the machine, where it passes through the heat exchanger, where water molecules in the air condense into water droplets. The treated, dry air is then expelled from the machine, and this cycle continues to maintain a suitable relative humidity level indoors.

[0003] When a dehumidifier dehumidifies, indoor air needs to be drawn into it. Dehumidifiers typically have filters to remove impurities from the air. Because the air contains a lot of moisture, this moisture adheres to the filters. Since the filters lack a drying mechanism, bacteria can grow under prolonged moisture. These bacteria are expelled when the dehumidifier exhausts fresh air and can be inhaled by the user, posing a health risk. To address these issues, a new integrated dehumidifier and air purifier is proposed. Utility Model Content

[0004] The purpose of this utility model is to provide a fresh air dehumidification and purification integrated machine to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model is a fresh air dehumidification and purification integrated machine, including a dehumidifier body. The dehumidifier body is equipped with a compressor, filter screen, total heat exchange core, condenser, fan and electrical control components. The filter screen includes multiple first filter screens and second filter screens. The fan includes an exhaust fan and an air supply fan.

[0007] The first filter screen has several storage boxes and several limiting grooves fixedly installed inside. The limiting grooves have limiting blocks installed inside. A first drying box is fixedly connected to one surface of the limiting block. A sliding groove is opened on one surface of the limiting groove. A sliding rod is installed in the sliding groove. A second drying box is fixedly connected to one surface of the sliding rod. The two drying boxes store desiccant to absorb and dry the moisture on the first filter screen.

[0008] Preferably, a pressing block is fixedly connected to the bottom surface of the first drying box, and guide grooves are provided on both sides of the inner wall of the storage box. A spring is fixedly connected to the guide groove, a guide block is fixedly connected to one end of the spring, a baffle is fixedly connected to the guide block, a push block is fixedly connected to one surface of the baffle, and a push plate is fixedly connected to the other surface of the baffle. A placement plate and a sliding plate are fixedly installed inside the storage box, and a feeding groove is provided on one surface of the second drying box. When the first drying box is pressed down, the pressing block pushes the push plate to push the desiccant into the second drying box, thereby achieving continuous drying.

[0009] Preferably, the limiting block is slidably engaged with the limiting groove, and the sliding rod is slidably engaged with the sliding groove.

[0010] Preferably, the bottom surface of the extrusion block and the upper surface of the push block are both inclined at the same angle, so that the extrusion block can push the push block to push the desiccant out of the placement plate.

[0011] Preferably, there is a gap between the placement plate and the storage box, the guide block slides with the guide groove, the upper surface of the storage box has a feed port, and the feed port is internally threaded with a plug.

[0012] Preferably, the slide plate is inclined, and the position of the slide plate corresponds to the position of the feed chute.

[0013] Preferably, the bottom of the dehumidifier body is provided with an electronic control component, an evaporator, a reheat condenser and a humidifying membrane, for controlling the heating, dehumidification and humidification functions of the equipment.

[0014] Preferably, a first delivery pipe is fixedly connected between the evaporator and the condenser, and a first electronic expansion valve is fixedly installed on the circumferential side of the first delivery pipe. A second delivery pipe and a third delivery pipe are fixedly connected between the first delivery pipe and the reheat condenser. A second electronic expansion valve is fixedly connected to the second delivery pipe, and a solenoid two-way valve is fixedly connected to the third delivery pipe. A water inlet pipe is fixedly connected to one surface of the humidifying membrane, and a water inlet valve is fixedly installed on the circumferential side of the water inlet pipe.

[0015] This utility model has the following beneficial effects:

[0016] 1. This utility model has the function of dehumidifying the first filter screen, preventing the growth of bacteria that may harm the human body. Specifically, it is achieved by setting up a first drying box and a second drying box. Both the first drying box and the storage box are pre-stored with desiccant. When the desiccant is exposed to the air in the first drying box, it absorbs moisture, increases in weight, and presses down, pushing the push plate to push the desiccant in the storage box onto the placement plate. The desiccant then enters the second storage box through a sliding plate to continue absorbing moisture, thus achieving a continuous drying function.

[0017] 2. This utility model has the effect of extending the service life of the core functional components of the equipment through multi-stage filtration. Specifically, by setting a first filter and a second filter, the primary filter intercepts large particles, protects the subsequent high-efficiency filter, and reduces the risk of clogging. The high-efficiency filter can filter PM2.5, pollen and other fine particles, significantly improving the cleanliness of the air outlet.

[0018] 3. This utility model has the function of simultaneously meeting the needs of cooling, dehumidification and constant temperature. Specifically, it achieves the functions of "cooling and dehumidification" and "reheating" by setting up a combination of condenser and reheat condenser. For example, in a high temperature and high humidity environment, after cooling and dehumidifying by condenser, reheat condenser can heat the air to a comfortable temperature, avoiding the problem of "overcooling" of traditional dehumidifiers.

[0019] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the first filter screen of this utility model;

[0023] Figure 3 This is a schematic diagram of the drying mechanism of this utility model;

[0024] Figure 4 This is a schematic diagram of the first cross-sectional structure of the storage box;

[0025] Figure 5 This is a schematic diagram of the second cross-sectional structure of the storage box;

[0026] Figure 6 This is a schematic diagram of the exploded structure of the first and second drying boxes;

[0027] Figure 7 This is a schematic diagram of the process for manufacturing a cool fresh air system according to this utility model;

[0028] Figure 8 This is a schematic diagram of the process for manufacturing hot fresh air according to this utility model;

[0029] Figure 9 This is a schematic diagram of the heating and humidification process of this utility model;

[0030] Figure 10 This is a schematic diagram of the isothermal dehumidification process of this utility model.

[0031] The components represented by each number in the attached diagram are listed below: 1. Dehumidifier body; 2. First filter; 3. Total heat exchange core; 4. Exhaust fan; 5. Condenser; 6. Second filter; 7. Electrical control components; 8. Supply fan; 9. Evaporator; 10. Reheat condenser; 11. Humidifying membrane; 12. Storage box; 13. First drying box; 14. Second drying box; 15. Plug; 16. Extrusion block; 17. Push block; 18. Limiting groove; 19. Limiting block; 20. Slide rod; 21. Placement plate; 22. Push plate; 23. Baffle; 24. Guide block; 25. Slide plate; 26. Guide groove; 27. Spring; 28. Slide groove; 29. ​​Feed chute. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0033] In the description of this utility model, it should be understood that the terms "upper", "middle", "outer", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0034] Example 1:

[0035] Please see Figures 1-10As shown, this utility model is a new type of integrated air dehumidifier and purifier, including a dehumidifier body 1. The dehumidifier body 1 is equipped with a compressor, filter screen, total heat exchange core 3, condenser 5, fan and electrical control components 7. The filter screen includes multiple first filter screens 2 and second filter screens 6. Both the first filter screens 2 and the second filter screens 6 are detachable and can be cleaned or replaced regularly during use. The fan includes an exhaust fan 4 and an air supply fan 8. After the outside air enters the dehumidifier body 1, it first passes through the first filter screen 2, which intercepts large particles (such as dust and hair) to protect the subsequent high-efficiency filter screen 6 and reduce the risk of clogging. Then it passes through the second filter screen 6 to filter PM2.5, pollen and other fine particles (below 0.3μm). Combined with the activated carbon layer, it can also adsorb odors and formaldehyde, significantly improving the cleanliness of the air. Compared with traditional single-stage filtration dehumidifiers, multi-stage filtration can extend the life of core components (such as condenser 5, evaporator 9, etc.) and reduce the frequency of maintenance.

[0036] The total heat exchange core 3 (such as cross-flow or counter-flow type) can simultaneously recover sensible heat (temperature) and latent heat (humidity) in the exhaust air, reducing the energy consumption of fresh air treatment. For example, in summer, the exhaust air cools the fresh air, and in winter, the fresh air is preheated. By pre-treating the fresh air through the total heat exchange core 3, the dehumidification load of the evaporator 9 is reduced, the overall dehumidification efficiency is improved, and indoor humidity fluctuations are avoided.

[0037] The first filter screen 2 has several storage boxes 12 and several limiting grooves 18 fixedly installed inside. Limiting blocks 19 are installed in the limiting grooves 18 and slide in conjunction with the limiting grooves 18. A first drying box 13 is fixedly connected to one surface of the limiting block 19. The limiting block 19, in conjunction with the limiting grooves 18, limits the first drying box 13, allowing it to move only in the vertical direction. A sliding groove 28 is opened on one surface of the limiting groove 18. A sliding rod 20 is installed in the sliding groove 28 and slides in conjunction with the sliding groove 28. The sliding rod 20 is inserted into the sliding groove 28 and is used for disassembling and installing the second drying box 14. After the desiccant in the second drying box 14 is used up, the second drying box 14 can be disassembled to empty and replace the desiccant inside. A second drying box 14 is fixedly connected to one surface of the sliding rod 20. The two drying boxes store desiccant to absorb and dry the moisture on the first filter screen 2, preventing bacteria from growing on the first filter screen 2.

[0038] A pressing block 16 is fixedly connected to the bottom surface of the first drying box 13. Guide grooves 26 are provided on both sides of the inner wall of the storage box 12. A spring 27 is fixedly connected in the guide groove 26. The spring 27 is used to reset the baffle 23, so that the push block 17 can be reset. After the desiccant is used up, it can be replaced for the next drying.

[0039] One end of the spring 27 is fixedly connected to a guide block 24, which slides with the guide groove 26. The guide block 24 is fixedly connected to a baffle 23, and a push block 17 is fixedly connected to one surface of the baffle 23. The bottom surface of the extrusion block 16 and the upper surface of the push block 17 are both inclined at the same angle. The other surface of the baffle 23 is fixedly connected to a push plate 22. A placement plate 21 and a sliding plate 25 are fixedly installed inside the storage box 12. There is a gap between the placement plate 21 and the storage box 12. The upper surface of the storage box 12 has a feed inlet, and a plug 15 is threaded into the feed inlet.

[0040] The second drying box 14 has a feeding groove 29 on one surface. The slide plate 25 is inclined and its position corresponds to the position of the feeding groove 29. After the desiccant in the first drying box 13 absorbs moisture, its weight increases, causing the first drying box 13 to move downward. The first drying box 13 drives the pressing block 16 to press down. When the inclined surface of the pressing block 16 contacts the inclined surface of the push block 17, the push block 17 is pushed towards one side of the storage box 15. The push block 17 further pushes the push plate 22 through the baffle 23. The desiccant placed on the placement plate 21 by the push plate 22 is pushed out. The desiccant on the placement plate 21 falls onto the slide plate 25 through the gap. The surface of the slide plate 25 is smooth and inclined. After the desiccant falls onto the slide plate 25, it will slide down naturally and enter the second drying box 14 through the feeding groove 29, where it is exposed to the air and continues to absorb moisture and dry.

[0041] Before installing the first filter screen 2 inside the dehumidifier body 1, open the plug 15 and put the desiccant into the storage box 12 through the feed inlet. The desiccant falls onto the placement plate 21. Then, place the other desiccant into the first drying box 13. The desiccant in the first drying box 13 is exposed to the air, which allows it to better contact with moisture and absorb and dry the moisture adhering to the first filter screen 2. After the desiccant absorbs the moisture, its own weight increases. Under the limiting action of the limiting block 19 and the limiting groove 18, the first drying box 13 slides vertically downward. The first drying box 13 drives the extrusion block 16 to slide down. When the inclined surface of the extrusion block 16 contacts the inclined surface of the push block 17, it pushes the push block 17 to move into the storage box 12. The push block 17 pushes the push plate 22 to move through the baffle 23. 22. The desiccant placed on the placement plate 21 is pushed out, falls through the gap onto the slide plate 25, and then continues to slide down through the slide plate 25, entering the second drying box 14 through the feed chute 29. This exposes the desiccant stored in the storage box 12 to the air, allowing it to continue absorbing moisture and drying continuously. When the desiccant is replaced periodically, the first filter screen 15 is pulled out, and then the slide rod 20 is pulled out from the slide groove 28. The second drying box 14 is then pulled out, and the used desiccant inside is poured out. The desiccant in the first drying box 13 is also poured out. At this time, the pressing block 16 no longer presses the push block 17, the spring 27 returns to its original position, and the guide block 24 drives the baffle 23 and the push plate 22 to return to their original positions. Then the plug 15 is opened, and the desiccant is filled into the storage box 15.

[0042] Example 2:

[0043] The bottom of the dehumidifier body 1 is equipped with an electronic control component 7, an evaporator 9, a reheat condenser 10, and a humidifying film 11. The combination of condenser 5 and reheat condenser 10 realizes the functions of "cooling and dehumidifying" and "reheating". In high temperature and high humidity environments, after cooling and dehumidifying through condenser 5, reheat condenser 10 can heat the air to a comfortable temperature, avoiding the "overcooling" problem of traditional dehumidifiers. Compared with dehumidifiers with a single condenser, it can simultaneously meet the needs of cooling, dehumidifying, and constant temperature. The electronic control component 7 (such as a PLC or intelligent controller) automatically switches the operating mode (such as cooling and dehumidifying, temperature-adjusting dehumidifying, heating, etc.) according to the temperature and humidity sensor data, and adjusts the fan speed and compressor frequency. Through wet film humidification technology, it dynamically adjusts the air humidity to the set range, avoiding the dryness and discomfort caused by excessive dehumidification of traditional dehumidifiers.

[0044] A first delivery pipe is fixedly connected between the evaporator 9 and the condenser 5. A first electronic expansion valve is fixedly installed on the periphery of the first delivery pipe. A second delivery pipe and a third delivery pipe are fixedly connected between the first delivery pipe and the reheat condenser 10. A second electronic expansion valve is fixedly connected to the second delivery pipe, and a solenoid two-way valve is fixedly connected to the third delivery pipe. A water inlet pipe is fixedly connected to one surface of the humidifying membrane 11, and a water inlet valve is fixedly installed on the periphery of the water inlet pipe.

[0045] The workflow of the cold fresh air (cooling and dehumidification) system is as follows: After the compressor starts, the high-temperature medium first enters the condenser for cooling and liquefaction, and then enters the evaporator for cooling and dehumidification through the first electronic expansion valve for throttling and pressure reduction. The treated low-temperature medium flows through the reheat condenser to absorb heat and regulate the temperature, and then the flow direction is controlled by the electromagnetic two-way valve (the path is determined by the "on" state or the state switch when the power is off), and finally passes through the humidification membrane to complete the humidity regulation. The second electronic expansion valve and the water inlet valve work together to control the medium flow rate and the amount of humidifying water, forming a complete cycle from compression, condensation, dehumidification, reheating to humidification, realizing precise control of cold fresh air output and temperature and humidity.

[0046] The hot fresh air system operates as follows: First, the refrigerant is compressed into a high-temperature, high-pressure gas by the compressor. This gas releases heat and condenses into a liquid in the condenser. Then, after being throttled and depressurized by the first electronic expansion valve, it enters the evaporator. Here, the low-temperature, low-pressure refrigerant evaporates and absorbs heat, causing a rapid drop in the fresh air temperature and the precipitation of condensate (achieving deep dehumidification). Subsequently, the liquid refrigerant is blocked by the second electronic expansion valve and enters the reheat condenser, where it absorbs waste heat from the compressor and heats up. It then exchanges heat with the humid fresh air to raise its temperature to a suitable level. Finally, the system passes through a humidification membrane (optional in winter) to regulate humidity before being delivered indoors. The system switches the refrigerant circuit via an electromagnetic two-way valve (closing the reheat condenser in summer and turning on heating in winter). Combined with the precise control of the variable frequency compressor and electronic expansion valve, it achieves efficient and energy-saving coordinated temperature and humidity regulation. Simultaneously, the pre-cooling function of the condenser and the waste heat recovery of the reheat condenser significantly reduce operating energy consumption.

[0047] The heating and humidification process is as follows: The compressor compresses the refrigerant and sends it to the condenser for cooling. Then, it enters the evaporator through the first open electronic expansion valve for heat exchange, achieving initial cooling and dehumidification of the air. Subsequently, the refrigerant flows to the reheat condenser to reheat the dehumidified air. Simultaneously, the system controls the flow of water into the humidification membrane through the water inlet valve for final humidification. The entire process, through precise control of the opening and closing states of the electronic expansion valve and the water inlet valve, ensures dual regulation of temperature and humidity while dehumidifying, achieving the ideal heating and humidification effect.

[0048] The isothermal dehumidification process is as follows: The compressor compresses the refrigerant and sends it to the condenser for condensation and heat dissipation. Then, it passes through the first electronic expansion valve into the evaporator. In the evaporator, the refrigerant evaporates and absorbs heat, causing the moisture in the air to condense into water droplets, completing the initial dehumidification. The cooled and dehumidified air is then reheated to near its original temperature by the reheat condenser. Finally, it passes through a humidification membrane for fine-tuning of humidity, ensuring that the output air maintains a suitable temperature and humidity balance. The system uses solenoid valves to control the opening and closing of different circuits and electronic expansion valves to regulate the refrigerant flow, thereby achieving precise control and regulation of the dehumidification process.

[0049] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0050] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A fresh air dehumidification and purification integrated machine, comprising a dehumidifier body (1), wherein the dehumidifier body (1) is internally provided with a compressor, a filter, a total heat exchange core (3), a condenser (5), a fan, and an electrical control assembly (7), characterized in that, The filter screen includes multiple first filter screens (2) and second filter screens (6), and the fan includes an exhaust fan (4) and an air supply fan (8). The first filter screen (2) is fixedly installed with several storage boxes (12) and several limiting grooves (18). The limiting grooves (18) are installed with limiting blocks (19). A first drying box (13) is fixedly connected to one surface of the limiting block (19). A sliding groove (28) is opened on one surface of the limiting groove (18). A sliding rod (20) is installed in the sliding groove (28). A second drying box (14) is fixedly connected to one surface of the sliding rod (20). The two drying boxes store desiccant to absorb and dry the moisture on the first filter screen (2).

2. The fresh air dehumidification and purification all-in-one machine according to claim 1, characterized in that, The bottom surface of the first drying box (13) is fixedly connected to an extrusion block (16). The two sides of the inner wall of the storage box (12) are provided with guide grooves (26). A spring (27) is fixedly connected in the guide groove (26). One end of the spring (27) is fixedly connected to a guide block (24). A baffle (23) is fixedly connected to the guide block (24). A push block (17) is fixedly connected to one surface of the baffle (23). A push plate (22) is fixedly connected to the other surface of the baffle (23). A placement plate (21) and a sliding plate (25) are fixedly installed in the storage box (12). A feeding groove (29) is provided on one surface of the second drying box (14). The first drying box (13) is pressed down and the push plate (22) is pushed by the extrusion block (16) to push the desiccant into the second drying box (14) to achieve continuous drying.

3. The integrated fresh air dehumidification and purification unit according to claim 1, characterized in that, The limiting block (19) is slidably engaged with the limiting groove (18), and the sliding rod (20) is slidably engaged with the sliding groove (28).

4. The integrated fresh air dehumidification and purification machine according to claim 2, characterized in that, The bottom surface of the extrusion block (16) and the upper surface of the push block (17) are both inclined at the same angle, so that the extrusion block (16) can push the push block (17) to push the desiccant out of the placement plate (21).

5. The fresh air dehumidifying and purifying all-in-one machine according to claim 2, characterized in that, A gap is provided between the placement plate (21) and the storage box (12). The guide block (24) is slidably engaged with the guide groove (26). The upper surface of the storage box (12) is provided with a feed port, and a plug (15) is threaded into the feed port.

6. The integrated fresh air dehumidification and purification machine according to claim 2, characterized in that, The slide plate (25) is inclined, and the position of the slide plate (25) corresponds to the position of the feed chute (29).

7. The fresh air dehumidifying and purifying all-in-one machine according to claim 1, characterized in that, The bottom of the dehumidifier body (1) is provided with an electronic control component (7), an evaporator (9), a reheat condenser (10) and a humidifying membrane (11), which are used to control the heating, dehumidification and humidification functions of the equipment.

8. A fresh air dehumidification and purification integrated machine according to claim 7, characterized in that, A first conveying pipe is fixedly connected between the evaporator (9) and the condenser (5). A first electronic expansion valve is fixedly installed on the circumferential side of the first conveying pipe. A second conveying pipe and a third conveying pipe are fixedly connected between the first conveying pipe and the reheat condenser (10). A second electronic expansion valve is fixedly connected to the second conveying pipe. An electromagnetic two-way valve is fixedly connected to the third conveying pipe. A water inlet pipe is fixedly connected to one surface of the humidifying membrane (11). A water inlet valve is fixedly installed on the circumferential side of the water inlet pipe.