Air intake and exhaust fresh air machine

Abstract

The utility model discloses an air intake and exhaust fresh air machine, which comprises a shell, a fresh air inlet, an air outlet and a return air inlet, the separation assembly is arranged in the shell and divides the inner space of the shell into a transfer chamber, a fresh air chamber, an air outlet chamber and an air return chamber; the fresh air chamber communicates with the fresh air opening, the air outlet chamber communicates with the air outlet, the air return chamber communicates with the air return opening, and a fan is arranged in the transfer chamber. The partition assembly comprises a plurality of compartment partition plates, circulation openings are formed in the compartment partition plates in a penetrating mode, the air outlet chamber and the air return chamber are communicated with the transfer chamber, and the fresh air chamber is communicated with the air outlet chamber and the air return chamber through the different circulation openings. And the air valve assembly is used for opening and closing the circulation opening. The transfer chamber, the fresh air chamber, the air outlet chamber and the air return chamber are arranged in the air conditioner, and the other chambers are connected by taking the transfer chamber as a pivot, so that air circulation paths in various operation modes are formed, and the air conditioner is simple in overall structure, small in size, small in occupied physical space during installation and convenient to install.

Description

Technical Field

[0001] This utility model relates to the field of air treatment technology, and in particular to a fresh air intake and exhaust fan. Background Technology

[0002] With the improvement of living standards, indoor air quality has received increasing attention. As a highly efficient and energy-saving air handling device, fresh air intake and exhaust systems are gradually being widely used in various building environments such as homes, commercial offices, schools, and hospitals.

[0003] A fresh air intake and exhaust system continuously supplies fresh air to the indoor environment while expelling stale air, ensuring a consistently fresh and pleasant atmosphere. Existing fresh air intake and exhaust systems typically feature high-efficiency filtration systems that effectively remove PM2.5, dust, pollen, and other pollutants. They operate quietly, generating minimal noise pollution and ensuring a peaceful and comfortable indoor space. Furthermore, their low-energy power consumption reduces operating costs, making them particularly suitable for densely populated venues with high air exchange rates, such as KTVs, internet cafes, and shopping malls.

[0004] However, in order to achieve the function of air intake and exhaust, existing fresh air intake and exhaust units usually have two fans installed inside, which are responsible for air intake and exhaust respectively. Due to the number of fans and the division of internal space, the size of existing fresh air intake and exhaust units is often too large, which not only affects installation, but may also occupy a large installation space and affect the layout of indoor space. Utility Model Content

[0005] The purpose of this utility model is to provide a fresh air intake and exhaust fan with a simplified structure that saves installation space.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A fresh air intake and exhaust fan includes: a housing with a fresh air inlet, an air outlet, and a return air inlet; a partition assembly disposed inside the housing, dividing the interior space of the housing into a transfer chamber, a fresh air chamber, an air outlet chamber, and a return air chamber; the fresh air chamber communicates with the fresh air inlet, the air outlet chamber communicates with the air outlet, and the return air chamber communicates with the return air inlet; a fan is disposed in the transfer chamber; the partition assembly includes several compartment partitions, each with a through-hole; the air outlet chamber and the return air chamber are respectively connected to the transfer chamber; the fresh air chamber communicates with the air outlet chamber and the return air chamber through different through-holes; and a damper assembly for opening and closing the through-holes.

[0008] Furthermore, the air valve assembly includes a fresh air control valve and an exhaust air control valve installed at different flow outlets. The fresh air chamber includes a main chamber and two auxiliary chambers. The auxiliary chambers are located on both sides of the main chamber, and the two auxiliary chambers respectively connect the main chamber and the transfer chamber. The fresh air control valve controls the connection between one of the auxiliary chambers and the transfer chamber, and the exhaust air control valve controls the connection between the other auxiliary chamber and the transfer chamber.

[0009] Furthermore, the main chamber is located below the transfer chamber, and the auxiliary chamber is located on the left and right sides of the transfer chamber; the air outlet chamber and the air return chamber are respectively located on the left and right sides of the transfer chamber, and both the air outlet chamber and the air return chamber are located above the auxiliary chamber.

[0010] Furthermore, the separation component includes an air guide baffle, which separates the air outlet chamber from the secondary chamber and the return air chamber from the secondary chamber. The included angle between the surface of the air guide baffle and the inner wall surface of the housing connected to it is α, and the included angle α satisfies: 60°≤a≤80°.

[0011] Furthermore, the air valve assembly includes an air outlet control valve and a return air control valve installed at different flow ports. The air outlet control valve is located between the air outlet chamber and the transfer chamber, and the return air control valve is located between the return air chamber and the transfer chamber. A filter element is provided inside the housing, and the fresh air control valve and the return air control valve are separated from the air outlet control valve by the filter element.

[0012] Furthermore, there are two fresh air inlets, and an air inlet cover is detachably connected to the housing, which blocks one of the fresh air inlets.

[0013] Furthermore, the air outlet and the air return outlet are perforated mesh structures or grille structures.

[0014] Furthermore, the separation assembly also includes a filter separator, at least one of the return air chamber and the outlet air chamber is separated from the transfer chamber by the filter separator, and the fresh air chamber is directly connected to the outlet air chamber and the return air chamber through different flow ports; the air valve assembly is also used to open and close the outlet air port and the return air port.

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

[0016] This invention uses a partition component to divide the interior of the housing into a transfer chamber, a fresh air chamber, an exhaust chamber, and a return air chamber. The transfer chamber serves as a hub, connecting the other chambers and controlling their connection through the partition component and the air valve component. This creates gas flow paths with multiple operating modes, including internal circulation, fresh air, exhaust, and mixed air. Based on this structure, only one fan needs to be installed in the transfer chamber to achieve air intake and exhaust functions, providing fresh air to the room while expelling stale air, thus ensuring indoor air quality. Due to the limited number of fans, the overall structure of this invention is relatively simple and small in size, requiring less physical space during installation. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of Embodiment 1 of the present utility model.

[0018] Figure 2 This is a top view of the structure of Embodiment 1 of the present utility model.

[0019] Figure 3 This is a schematic diagram of the right side of Embodiment 1 of the present utility model.

[0020] Figure 4 This is a schematic diagram of the internal structure of Embodiment 1 of the present utility model (I).

[0021] Figure 5 This is a schematic diagram (II) of the internal structure of Embodiment 1 of this utility model.

[0022] Figure 6 This is a gas flow diagram when the fresh air mode is turned on in Embodiment 1 of this utility model.

[0023] Figure 7 This is a gas flow diagram when the exhaust mode is turned on in Embodiment 1 of this utility model.

[0024] Figure 8 This is a gas flow diagram when the internal circulation mode is activated in Embodiment 1 of this utility model.

[0025] Figure 9 This is a gas flow diagram when the mixing mode is activated in Embodiment 1 of this utility model.

[0026] Figure 10 This is a schematic diagram of the internal structure of Embodiment 2 of this utility model.

[0027] Figure 11 This is a gas flow diagram when the fresh air mode is turned on in Embodiment 2 of this utility model.

[0028] Figure 12 This is a gas flow diagram when the exhaust mode is turned on in Embodiment 2 of this utility model.

[0029] Figure 13This is a gas flow diagram when the internal circulation mode is activated in Embodiment 2 of this utility model.

[0030] Figure 14 This is a gas flow diagram when the mixing mode is activated in Embodiment 2 of this utility model.

[0031] Explanation of main component symbols: 100, housing; 110, fresh air inlet; 120, air outlet; 130, return air inlet; 140, transfer chamber; 150, fresh air chamber; 151, main chamber; 152, secondary chamber; 160, air outlet chamber; 170, return air chamber; 200, partition assembly; 210, compartment partition; 211, flow outlet; 220, air guide partition; 230, filter partition; 300, fan; 400, air valve assembly; 410, fresh air control valve; 420, air outlet control valve; 430, return air control valve; 440, exhaust control valve; 500, filter element; 600, air outlet cover. Detailed Implementation

[0032] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0033] Example 1

[0034] like Figure 1-5 As shown, a fresh air intake and exhaust fan includes a housing 100, a partition assembly 200, a fan 300, and a damper assembly 400. The housing 100 is hollow inside and has a fresh air inlet 110, an air outlet 120, and a return air inlet 130. The fresh air inlet 110 corresponds to the outdoor environment, while the air outlet 120 and the return air inlet 130 correspond to the indoor environment. The air outlet 120 and the return air inlet 130 have a perforated mesh structure or a grille structure, which can play a role in uniform air intake and exhaust and filtration.

[0035] The partition assembly 200 is disposed inside the housing 100. The partition assembly 200 includes several compartment partitions 210 vertically connected inside the housing 100, and the compartment partitions 210 are provided with flow openings 211. The partition assembly 200 can divide the internal space of the housing 100 into four parts: a transfer chamber 140, a fresh air chamber 150, an air outlet chamber 160, and a return air chamber 170.

[0036] The fresh air chamber 150 is connected to the fresh air inlet 110, the air outlet chamber 160 is connected to the air outlet 120, and the return air chamber 170 is connected to the return air inlet 130. A fan 300 is installed in the transfer chamber 140. The air outlet chamber 160 and the return air chamber 170 are respectively connected to the transfer chamber 140. The fresh air chamber 150 is separated from the transfer chamber 140, the air outlet chamber 160, and the return air chamber 170 by a partition 210, and is connected to the air outlet chamber 160 and the return air chamber 170 by different flow ports 211.

[0037] The aforementioned methods of "connection" and "communication" include connection through the air outlet 211, as well as other methods that allow air circulation, and the same applies below. In this embodiment, in addition to the fresh air chamber 150, the transfer chamber 140 is also separated from the air outlet chamber 160 and the return air chamber 170 by partitions 210, and air circulation is achieved through the corresponding air outlets 211.

[0038] The damper assembly 400 is used to open / close the flow ports 211. In this embodiment, the damper assembly 400 includes multiple electrically operated dampers such as a fresh air control valve 410, an exhaust air control valve 420, and a return air control valve 430 installed at different flow ports 211. The fresh air control valve 410 is correspondingly located at the flow port 211 between the fresh air chamber 150 and the transfer chamber 140, the return air control valve 430 is located at the flow port 211 between the return air chamber 170 and the transfer chamber 140, and the exhaust air control valve 420 is located at the flow port 211 between the exhaust air chamber 160 and the transfer chamber 140. By opening or closing some or all of the flow ports 211 through the electrically operated dampers in the damper assembly 400, multiple gas flow paths can be formed accordingly.

[0039] The housing 100 is equipped with a filter element 500. The fresh air control valve 410 and the return air control valve 430 are separated from the outlet air control valve 420 by the filter element 500, so as to fully filter the outdoor fresh air flow and indoor return air flow that flow through the transfer room 140.

[0040] Specifically, such as Figure 6 As shown, in fresh air mode, the corresponding air vents 211 are opened by the fresh air control valve 410 and the air outlet control valve 420, while the remaining air vents 211 are closed by the other electric air valves. A fresh air circulation path is formed in the sequence of fresh air inlet 110 - fresh air chamber 150 - transfer chamber 140 - air outlet chamber 160 - air outlet 120. Under the action of the fan 300, outdoor fresh air can be introduced into the room along the fresh air circulation path, providing a continuous supply of fresh, oxygen-rich air and improving indoor air quality.

[0041] In exhaust mode, the return air control valve 430 and the fresh air control valve 410 open the corresponding flow ports 211 and close the remaining flow ports 211, forming an exhaust path along the sequence of return air inlet 130 - return air chamber 170 - transfer chamber 140 - fresh air chamber 150 - fresh air inlet 110. Under the action of the fan 300, indoor stale air is exhausted to the outside along the exhaust path, thereby improving air quality. In this mode, the fresh air chamber 150 and the fresh air control valve 410 also function as exhaust fans, which helps to reduce the size of the intake and exhaust fans and minimize the physical space occupied by the equipment.

[0042] It is also possible to Figure 7As shown, the fresh air chamber 150 is divided into a main chamber 151 and two auxiliary chambers 152, and an exhaust control valve 440 is correspondingly installed in the air valve assembly 400. The two auxiliary chambers 152 are respectively located on both sides of the main chamber 151, and the two auxiliary chambers 152 connect the main chamber 151 and the transfer chamber 140 at different positions. The two auxiliary chambers 152 always maintain communication with the main chamber 151.

[0043] The two auxiliary chambers 152 are separated from the transfer chamber 140 by partitions 210 and connected to the transfer chamber 140 via corresponding flow ports 211. Correspondingly, a fresh air control valve 410 is installed on the flow port 211 between one of the auxiliary chambers 152 and the transfer chamber 140 to control the connection between that auxiliary chamber 152 and the transfer chamber 140, while an exhaust air control valve 440 controls the connection between the other auxiliary chamber 152 and the transfer chamber 140. At this time, the main chamber 151 is indirectly connected to the outlet air chamber 160 and the return air chamber 170 through the two auxiliary chambers 152 and the transfer chamber 140.

[0044] The two auxiliary chambers 152 can respectively guide the fresh air flow and the exhaust air flow into and out of the transfer chamber 140. In exhaust mode, the corresponding flow port 211 can be opened and the remaining flow ports 211 can be closed for exhaust by the return air control valve 430 and the exhaust air control valve 440.

[0045] Preferably, the two auxiliary chambers 152 are respectively located on the left and right sides of the transfer chamber 140, while the main chamber 151 is located on the lower side of the transfer chamber 140, with the entire fresh air chamber 150 forming a U-shape that semi-encircles the outside of the transfer chamber 140. Correspondingly, the air outlet chamber 160 and the air return chamber 170 are respectively located on the left and right sides of the transfer chamber 140, and both the air outlet chamber 160 and the air return chamber 170 are located on the upper side of the auxiliary chambers 152, which makes the overall structure more compact and enhances the portability and installation flexibility of the fresh air intake and exhaust unit.

[0046] Two fresh air inlets 110 are provided, each with both fresh air intake and exhaust functions. The positions of the fresh air inlets 110 and the auxiliary chamber 152 are respectively located. An air vent cover 600 is detachably connected to the housing 100. Depending on the installation, one of the fresh air inlets 110 can be selected as a duct inlet to connect to the outside, and the other fresh air inlet 110 can be sealed with the air vent cover 600 to simplify the overall structure.

[0047] In the inner loop mode, such as Figure 8As shown, by opening the corresponding flow ports 211 through the return air control valve 430 and the outlet air control valve 420, and closing the remaining flow ports 211, an internal circulation path can be formed along the sequence of return air port 130 - return air chamber 170 - transfer chamber 140 - outlet air chamber 160 - outlet air port 120. Under the action of the fan 300, indoor air can be continuously drawn in along the internal circulation path for purification and then sent back into the room. This mode is particularly suitable when the outdoor air quality is poor. In weather conditions such as smog or sandstorms, it can prevent polluted outdoor air from entering the room and maintain the freshness of the indoor air.

[0048] Furthermore, such as Figure 9 As shown, the corresponding air outlets 211 can be opened by the fresh air control valve 410, the return air control valve 430 and the exhaust air control valve 420, and the corresponding air outlets 211 of the exhaust air control valve 440 can be closed to start the mixed air mode, which combines the fresh air mode with the internal circulation mode to refresh the indoor air more efficiently and improve the indoor air quality.

[0049] To reduce airflow loss in various modes, the aforementioned partition assembly 200 includes an inclined baffle 220, which separates the return air chamber 170 from the auxiliary chamber 152, and the outlet air chamber 160 from the auxiliary chamber 152. The baffle 220 forms an angle α between its surface and the inner wall of the housing 100 it contacts, satisfying 60°≤α≤80°, preferably 70°. The baffle 220 guides the airflow direction, optimizes the airflow path, and disperses the high-speed airflow entering the housing 100, reducing wind speed and thus minimizing kinetic energy loss due to excessive wind speed.

[0050] Example 2

[0051] like Figure 10 As shown, a fresh air intake and exhaust fan has a structure similar to that of Embodiment 1. The difference from Embodiment 1 is that in this embodiment, the partition component 200 further includes a filter partition 230 that has both a partitioning and filtering function. At least one of the return air chamber 170 and the outlet air chamber 160 is separated from the transfer chamber 140 by the filter partition 230. The fresh air chamber 150 is directly connected to the outlet air chamber 160 and the return air chamber 170, which can significantly simplify the structure of the fresh air intake and exhaust fan and reduce its volume.

[0052] In addition to controlling the opening and closing of the flow port 211, the air valve assembly 400 is also used to open and close the air outlet 120 and the return air outlet 130. This is equivalent to switching the air outlet control valve 420 in Embodiment 1 to the air outlet 120 and the return air control valve 430 to the return air outlet 130, thereby controlling the air outlet and return air accordingly and further simplifying the structure.

[0053] like Figure 11As shown, in fresh air mode, the fresh air inlet 110, the air outlet 120 and the corresponding circulation port 211 are opened by the air valve assembly 400, and the return air inlet 130 is closed, so that a fresh air circulation path can be formed in the order of fresh air inlet 110-fresh air chamber 150-return air chamber 170-transfer chamber 140-air outlet chamber 160-air outlet 120.

[0054] like Figure 12 As shown, in exhaust mode, the fresh air inlet 110, return air inlet 130 and corresponding flow outlet 211 are opened by the air valve assembly 400, and the air outlet 120 is closed, so that the exhaust path can be formed in the order of return air inlet 130-return air chamber 170-transfer chamber 140-air outlet chamber 160-fresh air chamber 150-fresh air inlet 110.

[0055] like Figure 13 As shown, in the internal circulation mode, by opening the air outlet 120 and the return air outlet 130 through the air valve assembly 400, and closing the fresh air outlet 110 and the flow outlet 211 corresponding to the fresh air chamber 150, an internal circulation path can be formed along the sequence of return air outlet 130-return air chamber 170-transfer chamber 140-air outlet chamber 160-air outlet 120.

[0056] like Figure 14 As shown, in the mixed air mode, by opening the fresh air inlet 110, the air outlet 120, the return air inlet 130 and the corresponding circulation outlet 211 through the air valve assembly 400, a mixed air path can be formed, combining the fresh air mode and the internal circulation mode.

[0057] In summary, the intake and exhaust fresh air unit uses the transfer room 140 as a hub to connect the other rooms and is controlled by the air valve assembly 400. With only one fan 300, it can achieve multiple functions such as introducing fresh air, exhausting air, internal circulation, and mixing air. The overall structure of the intake and exhaust fresh air unit is simple and compact, and the installation is flexible and convenient, saving space. It is especially suitable for places with limited installation space, such as KTV.

[0058] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims are within the scope of protection of the present invention.

Claims

1. A fresh air intake and exhaust fan, characterized in that, include: The housing has a fresh air inlet, an air outlet, and a return air inlet. A partition assembly is disposed inside the housing and divides the internal space of the housing into a transfer chamber, a fresh air chamber, an air outlet chamber, and a return air chamber. The fresh air chamber communicates with the fresh air inlet, the air outlet chamber communicates with the air outlet, and the return air chamber communicates with the return air outlet. A fan is installed in the transfer chamber. The partition assembly includes several compartment partitions, each with a through-hole. The air outlet chamber and the return air chamber are respectively connected to the transfer chamber, and the fresh air chamber communicates with the air outlet chamber and the return air chamber through different through-holes. A damper assembly for opening and closing the flow port.

2. The fresh air intake and exhaust fan as described in claim 1, characterized in that: The air valve assembly includes a fresh air control valve and an exhaust air control valve installed at different flow outlets. The fresh air chamber includes a main chamber and two auxiliary chambers. The auxiliary chambers are located on both sides of the main chamber, and the two auxiliary chambers respectively connect the main chamber and the transfer chamber. The fresh air control valve controls the connection between one of the auxiliary chambers and the transfer chamber, and the exhaust air control valve controls the connection between the other auxiliary chamber and the transfer chamber.

3. The fresh air intake and exhaust fan as described in claim 2, characterized in that: The main chamber is located below the transfer chamber, and the auxiliary chamber is located on the left and right sides of the transfer chamber; the air outlet chamber and the air return chamber are respectively located on the left and right sides of the transfer chamber, and both the air outlet chamber and the air return chamber are located above the auxiliary chamber.

4. The fresh air intake and exhaust fan as described in claim 3, characterized in that: The separation assembly includes an air guide baffle, which separates the air outlet chamber from the secondary chamber and the return air chamber from the secondary chamber. The included angle between the surface of the air guide baffle and the inner wall surface of the housing connected to it is α, and the included angle α satisfies: 60°≤a≤80°.

5. The fresh air intake and exhaust fan as described in claim 2, characterized in that: The air valve assembly includes an air outlet control valve and a return air control valve installed at different flow ports. The air outlet control valve is located between the air outlet chamber and the transfer chamber, and the return air control valve is located between the return air chamber and the transfer chamber. A filter element is provided inside the housing, and the fresh air control valve and the return air control valve are separated from the air outlet control valve by the filter element.

6. The fresh air intake and exhaust fan as described in claim 1, characterized in that: The fresh air inlet is provided in two places, and an air inlet cover is detachably connected to the housing, which blocks one of the fresh air inlets.

7. The fresh air intake and exhaust fan as described in claim 1, characterized in that: The air outlet and the air return outlet are perforated mesh or grille structures.

8. The fresh air intake and exhaust fan as described in claim 1, characterized in that: The separation assembly further includes a filter separator, at least one of the return air chamber and the outlet air chamber is separated from the transfer chamber by the filter separator, and the fresh air chamber is directly connected to the outlet air chamber and the return air chamber through different flow ports; the air valve assembly is also used to open and close the outlet air port and the return air port.

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