Temperature and humidity linkage fresh air machine

By installing a reverse ventilation component and an electrically driven moving channel in the fresh air unit, filter impurities are automatically cleaned, solving the problem of decreased filter permeability, simplifying the maintenance process, and ensuring the stable operation of the fresh air unit.

CN224261877UActive Publication Date: 2026-05-19ZHEJIANG PURUITAI ENVIRONMENT EQUIP CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHEJIANG PURUITAI ENVIRONMENT EQUIP CO LTD
Filing Date
2025-06-26
Publication Date
2026-05-19

AI Technical Summary

Technical Problem

After a period of use, the filter of a conventional temperature and humidity-controlled fresh air system accumulates impurities on its surface, reducing its permeability. It requires frequent manual replacement or cleaning, which is a cumbersome process, and it gets clogged even faster when the external environment is poor.

Method used

Design a temperature and humidity-linked fresh air unit equipped with a reverse ventilation component, including a frame, primary and secondary filters. The unit moves the channel and exhaust panel via an electric push rod to achieve automatic back-blowing cleaning of the filters. The indoor exhaust air is used to clean impurities on the filter surface and restore permeability.

Benefits of technology

It enables automatic cleaning of filter impurities during the use of the fresh air unit, simplifies the maintenance process, maintains filter permeability, ensures stable operation of the fresh air unit, and reduces the frequency of manual maintenance.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224261877U_ABST
    Figure CN224261877U_ABST
Patent Text Reader

Abstract

The utility model relates to the technical field of fresh air machines, in particular to a temperature and humidity linkage fresh air machine which comprises a fresh air machine body, a fresh air outlet and an exhaust air inlet are formed in the fresh air machine body, and two primary filter screens and two intermediate filter screens are arranged in the fresh air machine body. A reverse ventilation assembly used for dredging and cleaning impurities on the primary filter screen and the intermediate filter screen is arranged in the fresh air machine body and comprises a frame arranged in the fresh air machine body. According to the fresh air ventilator, by arranging the reverse ventilation assembly, when the fresh air ventilator body is used, external air enters the fresh air ventilator body through the second channel, is filtered by the primary filter screen and the intermediate filter screen on the right side and then is discharged into a room; and indoor air is exhausted through the exhaust fan and can blow the surfaces of the primary filter screen and the intermediate filter screen on the left side when passing through the primary filter screen and the intermediate filter screen on the left side to form reverse blowing, so that dust and impurities on the primary filter screen and the intermediate filter screen on the left side are blown away and exhausted through the first channel.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model relates to the field of fresh air system technology, and in particular to a temperature and humidity linked fresh air system. Background Technology

[0002] A fresh air system circulates indoor air, expelling stale indoor air and introducing fresh outdoor air after sterilization, disinfection, and filtration, ensuring a constant supply of fresh, clean air. A temperature and humidity-linked fresh air system integrates temperature and humidity sensing and intelligent adjustment. By monitoring indoor temperature and humidity in real time and automatically adjusting its operating mode, it optimizes both air quality and comfort. The system uses built-in high-precision sensors to collect indoor temperature and humidity data in real time. When the temperature or humidity deviates from the set threshold, the system automatically triggers adjustments.

[0003] Conventional temperature and humidity-controlled fresh air systems are designed with at least a pre-filter and a medium-efficiency filter at the air inlet to intercept large and medium-sized particulate matter, thereby improving air quality. However, after a period of use, the surface of the filter accumulates a lot of impurities, reducing its permeability and decreasing the airflow, thus affecting normal use. The fresh air system itself does not have the function of clearing impurities from the filter, so the filter needs to be manually removed and replaced every once in a while. This process is cumbersome and time-consuming, especially when the external environment is poor, the filter will clog faster, and the frequency of replacement will increase further.

[0004] Therefore, a temperature and humidity-linked fresh air system is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a temperature and humidity-linked fresh air system to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a temperature and humidity linked fresh air unit, comprising a fresh air unit body, wherein the fresh air unit body is provided with a fresh air outlet and an exhaust air inlet, and the fresh air unit body is provided with two primary filters and two intermediate filters; the fresh air unit body is provided with a reverse ventilation component for clearing and cleaning impurities on the primary and intermediate filters, the reverse ventilation component including a frame disposed in the fresh air unit body, wherein the primary and intermediate filters are disposed in the frame, and the fresh air unit body is provided with a moving channel, wherein an exhaust panel is fixedly connected to the moving channel.

[0007] Preferably, a separation channel is fixedly installed on the main body of the fresh air unit, and the separation channel has a first channel and a second channel.

[0008] Preferably, the frame has four mounting slots, in which a large limit frame and a small limit frame are engaged. The primary filter is fixedly installed in the large limit frame, and the intermediate filter is fixedly installed in the small limit frame.

[0009] Preferably, an exhaust fan is fixedly installed in the main body of the fresh air unit, and the movable channel is slidably connected to the air outlet of the exhaust fan.

[0010] Preferably, a partition plate for dispersing and discharging air is fixedly installed in the exhaust panel, and the partition plate has several through holes, and the exhaust panel is fitted with the small limiting frame.

[0011] Preferably, the fresh air unit body is fixedly equipped with an electric push rod for moving the moving channel, and the moving channel is fixedly connected to the electric push rod.

[0012] Preferably, the frame has an inclined surface, and the area of ​​the primary filter screen is larger than the area of ​​the intermediate filter screen.

[0013] The beneficial effects of this utility model are:

[0014] This invention, by incorporating a reverse ventilation component, allows outside air to enter the fresh air unit through a second channel during use. The air is then filtered by the primary and secondary filters on the right side before being discharged into the room. Meanwhile, indoor air is exhausted by an exhaust fan. As it passes through the primary and secondary filters on the left side, it agitates their surfaces, creating a reverse airflow. This blows away dust and impurities from the primary and secondary filters on the left side, which are then discharged through the first channel, restoring the filters' permeability. In other words, the purpose of cleaning dust and impurities from the filter surface is achieved simultaneously with the use of the fresh air unit, eliminating the need for manual filter disassembly and replacement.

[0015] Simultaneously, the electric push rod moves the movable channel, causing the exhaust panel to move from the left to the right, corresponding to the primary and secondary filters on the right. This allows outside air to enter through the first channel, be filtered, and then exhausted into the room. Meanwhile, indoor air is blown through the primary and secondary filters on the right by the exhaust fan, creating a reverse airflow to clean dust and impurities. Thus, indoor air can switch back and forth between the left and right sides during exhaust, ensuring that the filters remain permeable and maintaining the stable operation of the fresh air unit. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of a temperature and humidity-linked fresh air unit according to an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the moving channel structure of a temperature and humidity-linked fresh air unit according to an embodiment of the present invention;

[0019] Figure 3 This is a cross-sectional structural diagram of the main body of a temperature and humidity-linked fresh air system according to an embodiment of the present invention.

[0020] Figure 4 This is a schematic diagram of the exhaust panel structure of a temperature and humidity-linked fresh air unit according to an embodiment of the present invention;

[0021] Figure 5 This is a cross-sectional view of the exhaust panel of a temperature and humidity-linked fresh air unit according to an embodiment of the present invention.

[0022] Figure 6 This is a cross-sectional view of the frame structure of a temperature and humidity-linked fresh air unit according to an embodiment of the present invention.

[0023] The following are marked in the diagram: 1. Fresh air unit body; 2. Fresh air outlet; 3. Exhaust air inlet; 4. Primary filter; 5. Secondary filter; 6. Frame; 7. Moving channel; 8. Exhaust panel; 9. Separation channel; 10. First channel; 11. Second channel; 12. Mounting slot; 13. Large limit frame; 14. Small limit frame; 15. Exhaust fan; 16. Partition plate; 17. Through hole; 18. Electric push rod; 19. Sloping surface. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0025] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0026] like Figures 1 to 6 As shown, a specific embodiment of this utility model provides a temperature and humidity linked fresh air unit, including a fresh air unit body 1. The fresh air unit body 1 is provided with a fresh air outlet 2 and an exhaust air inlet 3. The fresh air unit body 1 is provided with two primary filters 4 and two intermediate filters 5. The primary filters 4 and intermediate filters 5 cooperate with each other to filter the air entering the fresh air unit body 1, thereby improving air quality. The fresh air unit body 1 is provided with a back-ventilation component for clearing impurities from the primary filters 4 and intermediate filters 5. The reverse ventilation component enables the fresh air unit 1 to exhaust indoor air to the outside, and blow the impurities on the primary filter 4 and the intermediate filter 5 with the exhaust air. The reverse airflow cleans and unblocks the impurities on the surfaces of the two filters, thereby restoring the permeability of the primary filter 4 and the intermediate filter 5. The reverse ventilation component includes a frame 6 set in the fresh air unit 1, and the primary filter 4 and the intermediate filter 5 are set in the frame 6. The fresh air unit 1 is provided with a moving channel 7, and an exhaust panel 8 is fixedly connected to the moving channel 7.

[0027] like Figures 3 to 6As shown, specifically, the frame 6 has four mounting slots 12, in which a large limit frame 13 and a small limit frame 14 are engaged. The primary filter 4 is fixedly installed in the large limit frame 13, and the intermediate filter 5 is fixedly installed in the small limit frame 14. The primary filter 4 and the intermediate filter 5 are respectively fixedly installed in the large limit frame 13 and the small limit frame 14. Therefore, by correspondingly embedding the large limit frame 13 and the small limit frame 14 into the mounting slots 12, it is worth noting that one primary filter 4 corresponds to one intermediate filter 5, forming a set that works together. That is, two sets are formed in the frame 6. The fresh air unit body 1 has a fixedly installed separation channel 9, which has a first channel 10 and a second channel 11. Each set of primary filters 4 and intermediate filters 5 corresponds to the first channel 10 and the second channel 11, respectively, so that when air passes through the separation channel 9, it can be filtered by the primary filter 4 and the intermediate filter 5, thereby improving air quality.

[0028] like Figures 2 to 5As shown, specifically, when the fresh air unit 1 is working, outside air enters through the second channel 11 and is gradually filtered by the primary filter 4 and the intermediate filter 5 before entering the fresh air unit 1. To better distinguish the two sets of primary filters 4 and intermediate filters 5, the primary filters 4 and intermediate filters 5 connected to the second channel 11 are considered as the right side, and the primary filters 4 and intermediate filters 5 connected to the first channel 10 are considered as the left side. After being filtered, the air enters the fresh air unit 1 and undergoes dehumidification and heat exchange under the action of other internal components. The filtered air is then discharged into the room through the fresh air outlet 2. An exhaust fan 15 is fixedly installed in the fresh air unit 1, and the moving channel 7 is slidably connected to the air outlet of the exhaust fan 15. A partition plate 16 for dispersing and discharging air is fixedly installed in the exhaust panel 8. Several through holes 17 are opened on the partition plate 16. The exhaust panel 8 is attached to the small limit frame 14. At the same time, indoor air is discharged through the exhaust... Air enters the fresh air unit 1 through inlet 3 and is filtered by the internal exhaust filter. The exhaust filter is existing technology and is installed inside the fresh air unit 1 as a device for filtering indoor air as it is discharged to the outside. Since it filters the air discharged from the room, and the indoor air quality has very few impurities, the filter has a long replacement cycle and is not prone to clogging. Therefore, its replacement and clogging are not considered here. After the filtered air is processed by other components such as heat exchange, the air is drawn in by the exhaust fan 15 to form a powerful airflow and enters the moving channel 7. Then the airflow is discharged through the through hole 17 on the partition plate 16. The discharged airflow blows and cleans the primary filter 4 and the intermediate filter 5 on the left side. That is, it cleans the air discharged from the room by the fresh air unit 1, forming a back-blowing airflow. The impurities and dust on the intermediate filter 5 are blown outward and, after passing through the primary filter 4, enter the first channel 10 together with the dust and impurities on the primary filter 4 and are discharged to the outside.

[0029] As can be seen above, the primary filter 4 and intermediate filter 5 on the right serve as air inlets, drawing air into the room and filtering it. The primary filter 4 and intermediate filter 5 on the left serve as outlets, expelling indoor air. The expelled air creates a reverse airflow that removes dust and impurities from the primary filter 4 and intermediate filter 5, restoring their permeability and filtration capacity. Furthermore, the air filtration and filter surface cleaning occur simultaneously, meaning that the cleaning of the primary filter 4 and intermediate filter 5 can be completed while the fresh air unit 1 is in use. This improves maintenance efficiency, simplifies the filter maintenance process, and ensures the stable operation of the fresh air unit 1 by constantly cleaning the filters during its operation.

[0030] The main body 1 of the fresh air unit is fixedly equipped with an electric push rod 18 for moving the moving channel 7. The moving channel 7 is fixedly connected to the electric push rod 18. When the electric push rod 18 is activated, it moves the moving channel 7, causing the exhaust panel 8 on the moving channel 7 to gradually move along the small limit frame 14 until it reaches the small limit frame 14 on the right side of a set of intermediate filters 5. At this time, the exhaust panel 8 corresponds with the primary filter 4 and intermediate filter 5 on the right side. Therefore, outside air enters through the first channel 10, is filtered by the primary filter 4 and intermediate filter 5 on the left side, and then enters the main body 1 of the fresh air unit. It is then discharged through the fresh air outlet 2, while indoor air enters through the exhaust inlet 3 and... Following the principle described above, the air is exhausted through the exhaust panel 8, passes through the primary filter 4 and intermediate filter 5 on the right side, enters the second channel 11, and is then discharged outwards. At this time, the dust and impurities on the surface of the primary filter 4 and intermediate filter 5 are blown away, thereby restoring the permeability of the primary filter 4 and intermediate filter 5 on the right side. Therefore, the electric push rod 18 allows the indoor exhaust air to be discharged outwards from either the primary filter 4 and intermediate filter 5 on the left or right side. The back-and-forth movement between the left and right sides cleans the dust on the surface of the primary filter 4 and intermediate filter 5 on the left and right sides, keeping them permeable and maintaining the stable operation of the fresh air unit 1.

[0031] like Figure 5 and Figure 6 As shown, specifically, the frame 6 has an inclined surface 19, and the area of ​​the primary filter 4 is larger than that of the intermediate filter 5. The inclined surface 19 allows impurities and dust on the intermediate filter 5 to be discharged more effectively through the primary filter 4 under the action of the reverse airflow. Because of the presence of the inclined surface 19, the primary filter 4 can allow impurities and dust on the intermediate filter 5 to pass through to the maximum extent. In the above process, when the air passes through the through holes 17 on the partition plate 16, the partition plate 16 and the through holes 17 diffuse and discharge the air, dividing it into multiple airflows, thereby forming a larger area of ​​airflow that blows away the dust and impurities on the surface of the intermediate filter 5, improving cleaning efficiency.

[0032] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0033] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A temperature and humidity-linked fresh air system, comprising a fresh air system body (1), wherein the fresh air system body (1) is provided with a fresh air outlet (2) and an exhaust air inlet (3), characterized in that, The fresh air unit body (1) is provided with two primary filters (4) and two intermediate filters (5). The fresh air unit body (1) is provided with a reverse ventilation component for clearing and cleaning impurities on the primary filter screen (4) and the intermediate filter screen (5). The reverse ventilation component includes a frame (6) provided in the fresh air unit body (1), and the primary filter screen (4) and the intermediate filter screen (5) are provided in the frame (6). The fresh air unit body (1) is provided with a moving channel (7), and an exhaust panel (8) is fixedly connected to the moving channel (7).

2. The temperature and humidity linked fresh air system according to claim 1, characterized in that, The fresh air unit body (1) is fixedly installed with a separation channel (9), and the separation channel (9) has a first channel (10) and a second channel (11).

3. A temperature and humidity-linked fresh air system according to claim 1, characterized in that, The frame (6) has four mounting slots (12), in which a large limit frame (13) and a small limit frame (14) are engaged. The primary filter (4) is fixedly installed in the large limit frame (13), and the intermediate filter (5) is fixedly installed in the small limit frame (14).

4. A temperature and humidity-linked fresh air system according to claim 1, characterized in that, An exhaust fan (15) is fixedly installed in the main body (1) of the fresh air unit, and the moving channel (7) is slidably connected to the air outlet of the exhaust fan (15).

5. A temperature and humidity-linked fresh air system according to claim 3, characterized in that, The exhaust panel (8) is fixedly installed with a partition plate (16) for dispersing and exhausting air. The partition plate (16) has several through holes (17). The exhaust panel (8) is attached to the small limiting frame (14).

6. A temperature and humidity-linked fresh air system according to claim 1, characterized in that, The main body (1) of the fresh air unit is fixedly equipped with an electric push rod (18) for pushing the moving channel (7) to move, and the moving channel (7) is fixedly connected to the electric push rod (18).

7. A temperature and humidity-linked fresh air system according to claim 1, characterized in that, The frame (6) has an inclined surface (19), and the area of ​​the primary filter (4) is larger than the area of ​​the intermediate filter (5).