Fresh air equipment

Abstract

The utility model relates to the technical field of air conditioning, and provides fresh air equipment which comprises a shell, a separator, a heat exchange core and a filter screen, the separator limits part of space in the shell into a heat exchange cavity, a guide groove extending in the first direction is formed in the separator, the heat exchange core is arranged in the heat exchange cavity, and the filter screen is arranged in the heat exchange cavity. The end, in the second direction, of the filter screen is located in the guide groove. According to the fresh air equipment provided by the embodiment of the invention, fixing parts which are independently arranged for assembling the filter screen can be reduced by utilizing the guide groove, and the production cost is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioning, and in particular to a fresh air device. Background Art

[0002] This section is intended to provide a background or context for the embodiments of the present application. No description herein is admitted to be prior art by virtue of its inclusion in this section.

[0003] Fresh air equipment is a highly efficient air purification device that discharges dirty air from indoors to the outside, and draws in fresh air from the outside, which is then input into the room after filtering and other measures. In the related art, fresh air equipment includes a filter, which requires a separate fixing such as a guide rail for assembly, resulting in increased design and manufacturing difficulty and production cost. Utility Model Content

[0004] In view of this, the present application hopes to provide a fresh air device that optimizes the assembly method of the filter, can reduce the number of parts and components, and reduce production costs.

[0005] The embodiment of the present application provides a fresh air device, including:

[0006] shell;

[0007] a partition, wherein the partition defines a portion of the space in the shell as a heat exchange cavity, and the partition is formed with a guide groove extending along a first direction;

[0008] A heat exchange core is arranged in the heat exchange cavity;

[0009] A filter screen is arranged in the heat exchange cavity, and an end of the filter screen along the second direction is located in the guide groove, wherein the first direction is perpendicular to the second direction.

[0010] In some embodiments, a side wall of the shell along the first direction is formed with an access port and a folded edge, the access port is connected to the heat exchange chamber, the folded edge extends from the access port to the heat exchange chamber, and the filter net enters and exits the heat exchange chamber through the access port under the guidance of the folded edge.

[0011] In some embodiments, the fresh air device includes an inspection cover, which is connected to the casing to selectively cover or open the access port.

[0012] In some embodiments, the two folded edges are spaced apart along the third direction to define a guide channel, the guide channel and the guide groove are spaced apart along the second direction, and the two ends of the filter net along the second direction are respectively located in the guide groove and the guide channel, wherein the first direction, the second direction and the third direction are perpendicular to each other.

[0013] In some embodiments, a hand hole is formed on the side wall where the taking-in / taking-out opening is located, and the hand hole is connected to the taking-in / taking-out opening.

[0014] In some embodiments, the fresh air device includes a spring buckle arranged on the partition, and the elastic force of the spring buckle presses against the filter screen.

[0015] In some embodiments, the spring buckle includes two elastic arms disposed in the guide groove, and the two elastic arms are located on both sides of the filter screen in the thickness direction to clamp the filter screen.

[0016] In some embodiments, the fresh air device includes a guide rib located on one side of the filter net along a third direction, and two of the guide ribs are spaced apart along the thickness direction of the filter net to form a clamping groove having an inlet and outlet, and the clamping groove includes a flared section connected to the inlet and outlet, and the size of the flared section decreases from close to the inlet and outlet to away from the inlet and outlet, and the filter net enters and exits the clamping groove through the inlet and outlet and the flared section.

[0017] In some embodiments, there are multiple filters, including a first filter and a second filter. Two opposite side walls of the outer shell along a third direction respectively form a return air inlet and a fresh air inlet, and both the return air inlet and the fresh air inlet are connected to the heat exchange chamber. The first filter is located on a side of the heat exchange core close to the return air inlet, and the second filter is located on a side of the heat exchange core close to the fresh air inlet.

[0018] In some embodiments, the plurality of filter screens include a third filter screen, and the third filter screen is located between the second filter screen and the heat exchange core.

[0019] The fresh air device provided in the embodiment of the present application can realize the interaction between indoor airflow and outdoor airflow, and provide purification function and heat exchange function for the airflow flowing through the heat exchange chamber. The guide groove has a guiding and limiting function for the filter. On the one hand, the filter can move along the guide groove, which is convenient for loading and unloading the filter and improving production efficiency. On the other hand, the use of the guide groove can reduce the number of separately set fixings required for assembling the filter, thereby reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of a portion of a fresh air device provided in some embodiments of the present application, wherein the dotted arrows represent the flow path of the outdoor air flow, and the solid arrows represent the flow path of the indoor air flow;

[0021] Figure 2 A schematic diagram of the structure of a fresh air device provided in some embodiments of the present application;

[0022] Figure 3A schematic diagram of the structure of the assembly of the cover body, the filter screen and the separator provided in some embodiments of the present application;

[0023] Figure 4 for Figure 3 A schematic diagram of the structure of a portion of the structure shown;

[0024] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0025] Figure 6 A schematic diagram of the structure of a separator provided in some embodiments of the present application;

[0026] Figure 7 for Figure 6 Enlarged view of point B in the middle;

[0027] Figure 8 for Figure 6 Enlarged view of center C.

[0028] Description of Reference Numerals

[0029] Fresh air equipment 1000;

[0030] Shell 100; access opening 100a; hand hole 100b; folded edge 110; guide channel 110b; reinforcing rib 1101; cover 120; shell 130; return air outlet 100c; fresh air outlet 100d; air supply outlet 100e; exhaust outlet 100f;

[0031] Partition 200; heat exchange chamber 200a; guide groove 200b;

[0032] Heat exchange core 300;

[0033] Filter 400; filter monomer 400a; first filter 410; second filter 420; third filter 430;

[0034] Access cover 500;

[0035] Spring buckle 600; elastic arm 610;

[0036] Guide rib 700; clamping groove 700a; inlet and outlet 700a1; flared section 700b. DETAILED DESCRIPTION

[0037] The following is a further detailed description of the implementation of the present application in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present application but cannot be used to limit the scope of the present application.

[0038] The various specific technical features and embodiments described in the specific implementation methods can be combined in any suitable manner without contradiction. For example, different implementation methods can be formed by combining different specific technical features / embodiments. In order to avoid unnecessary repetition, the various possible combinations of the specific technical features / embodiments in this application are no longer described separately. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. The application is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0039] It should be noted that, in the present application, down refers to the direction toward the ground, and up refers to the direction opposite to down. The first direction, the second direction, and the third direction are in a three-dimensional vertical coordinate system perpendicular to each other, and the first side of the first direction and the second side of the first direction are two opposite directions.

[0040] See also Figures 1 to 8 The embodiment of the present application provides a fresh air device 1000, including a shell 100, a partition 200, a heat exchange core 300 and a filter 400. The partition 200 defines a portion of the space inside the shell 100 as a heat exchange chamber 200a. The partition 200 is formed with a guide groove 200b extending along a first direction. The heat exchange core 300 is arranged in the heat exchange chamber 200a. The filter 400 is arranged in the heat exchange chamber 200a. The end of the filter 400 along the second direction is located in the guide groove 200b, wherein the first direction is perpendicular to the second direction.

[0041] The heat exchange core 300 is used to exchange heat between indoor airflow and outdoor airflow, which can effectively improve the heat exchange efficiency and reduce energy consumption. For example, the outdoor airflow with a higher temperature and the indoor airflow with a lower temperature exchange heat in the heat exchange core 300, and the indoor airflow can absorb the heat in the outdoor airflow, and send the comfortable outdoor airflow into the room, changing the temperature and / or humidity of the indoor environment and improving the user experience.

[0042] The functions of the filter 400 include but are not limited to removing dust, microorganisms and / or harmful gases in the air. Exemplarily, the filter 400 includes but is not limited to a primary filter, a medium filter and a high efficiency filter. The primary filter is mainly used to filter impurities larger than 5 μm (micrometers); the medium filter is mainly used to filter impurities between 1 μm and 5 μm; the high efficiency filter is mainly used to filter impurities between 0.3 μm and 1 mm. The filter 400 can be used alone or in combination of at least two different types of filters 400 to adapt to different usage scenarios.

[0043] The guide groove 200b extends along the first direction, which means that the filter 400 can move in the first direction in the guide groove 200b, and the filter 400 moves in and out of the heat exchange chamber 200a in the guide groove 200b. The guide groove 200b limits the displacement of the filter 400 along its thickness direction, and is used to maintain the stability of the filter 400. In this way, the filter 400 can be loaded and unloaded through the guide groove 200b, and the additional parts required to fix the filter 400 can be reduced, thereby reducing production costs.

[0044] The fresh air device 1000 provided in the embodiment of the present application can realize the interaction between indoor airflow and outdoor airflow, and provide purification function and heat exchange function for the airflow flowing through the heat exchange chamber 200a. The guide groove 200b has a guiding and limiting function for the filter 400. On the one hand, the filter 400 can move along the guide groove 200b, which is convenient for loading and unloading the filter 400 and improving production efficiency. On the other hand, the use of the guide groove 200b can reduce the number of separately set fixings required for assembling the filter 400, thereby reducing production costs.

[0045] The material of the partition 200 includes but is not limited to plastic and the like. For example, the partition 200 may be a plastic part, which has good plasticity and can be designed as a wind guide structure with a curved surface to reduce wind resistance and improve the smoothness of air flow. Exemplarily, the partition 200 may be an integrally molded structure. For example, the partition 200 may be an integrally injection molded structure. In this way, the assembly process can be reduced.

[0046] In one embodiment, the housing 100 may be a sheet metal part, which is easy to shape and has a light structure.

[0047] In one embodiment, the heat exchange core 300 can extend along the second direction, with the plane perpendicular to the second direction as the projection plane, and the projection shape of the heat exchange core 300 is roughly square, that is, the appearance of the heat exchange core 300 is roughly a cube, with a regular structure and easy layout.

[0048] The fresh air device 1000 provided in the embodiment of the present application can be installed on the ceiling or the ceiling panel. The ceiling panel can separate the indoor space into the ceiling space and the living space. Users carry out their daily lives in the living space, and the ceiling space is not only used to beautify the interior decoration, but also to install other equipment. In one embodiment, the fresh air device 1000 is arranged in the ceiling space. In this way, the fresh air device 1000 is hidden in the ceiling space, avoiding the user from directly observing the entire fresh air device 1000, thereby improving the visual aesthetics. It can be understood that the indoor space includes but is not limited to balconies, bathrooms, kitchens, etc., and can be a large-sized house, a small-sized house, or other types of production or living environments.

[0049] When the fresh air device 1000 provided in the embodiment of the present application is installed on a ceiling or a suspended ceiling panel, the first direction is consistent with the up and down direction, the first side of the first direction may be the bottom, and the second side of the first direction may be the top.

[0050] For some examples, see Figure 3 and Figure 4 A side wall of the housing 100 along the first direction is formed with a take-in / take-out port 100a and a folded edge 110. The take-in / take-out port 100a is connected to the heat exchange chamber 200a. The folded edge 110 extends from the take-in / take-out port 100a to the heat exchange chamber 200a. The filter 400 enters and exits the heat exchange chamber 200a through the take-in / take-out port 100a under the guidance of the folded edge 110. In this way, the folded edge 110 can reduce the possibility of the filter 400 touching the edge of the inlet and outlet 700a1 during the process of entering and exiting, protect the filter 400, and enable the filter 400 to enter and exit the heat exchange chamber 200a accurately and quickly, thereby improving the working efficiency. In addition, the folded edge 110 extends toward the heat exchange chamber 200a, does not occupy the external space, avoids accidental contact with the operator, and improves safety.

[0051] In one embodiment, please refer to Figure 5 The folded edge 110 is provided with a reinforcing rib 1101, which can increase the rigidity of the folded edge 110 and prevent the folded edge 110 from being deformed.

[0052] For some examples, see Figure 2 The fresh air device 1000 includes an inspection cover 500, which is connected to the housing 100 to selectively cover or open the access port 100a. For example, the fresh air device 1000 is installed on the ceiling, and the access port 100a is facing downward. The inspection cover 500 covers the access port 100a, which can prevent dust and / or water in the air from entering the heat exchange chamber 200a, and can also prevent the filter 400 from loosening and falling through the access port 100a to cause safety risks. When the filter 400 needs to be replaced, the inspection cover 500 is moved to open the access port 100a, and the original filter 400 is taken out and a new filter 400 is put in, which is convenient to operate.

[0053] In one embodiment, the fresh air device 1000 includes a locking member, one end of the inspection cover 500 is rotatably connected to the housing 100, and the other end of the inspection cover 500 is locked to the housing 100 through the locking member. That is, when the locking member is in a buckled state, the inspection cover 500 is fixed to the housing 100, shielding the access opening 100a. When the locking member is in an open state, the locking end of the inspection cover 500 is released, and the access opening 100a can be opened by rotating the inspection cover 500.

[0054] For example, the fresh air device 1000 is installed on the ceiling. At this time, the access opening 100a is facing downward, and the operator needs to work below the fresh air device 1000. When the locking member is in the open state, the locking end of the inspection cover 500 is released, and the inspection cover 500 rotates under the action of gravity to open the access opening 100a. In this way, on the one hand, when the access opening 100a is open, the inspection cover 500 remains connected to the housing 100, and the operation step of placing the inspection cover 500 on the storage surface can be omitted. On the other hand, it can prevent the inspection cover 500 from falling, ensuring the safety of the operator.

[0055] In some embodiments, the two folded edges 110 are spaced apart along the third direction to define a guide channel 110b, the guide channel 110b and the guide groove 200b are spaced apart along the second direction, and the two ends of the filter screen 400 along the second direction are respectively located in the guide groove 200b and the guide channel 110b, wherein the first direction, the second direction and the third direction are perpendicular to each other. For example, see Figure 5 , the two folded edges 110 clamp the filter screen 400 on opposite sides along the third direction to limit the displacement of the filter screen 400 along the third direction. The guide channel 110b and the guide groove 200b jointly define the opposite ends of the filter screen 400 along the second direction. In this way, under the joint action of the guide channel 110b and the guide groove 200b, the filter screen 400 can be prevented from shifting during loading and unloading, and the connection stability between the filter screen 400 and the partition 200 can be enhanced, and the filter screen 400 can be prevented from shaking and causing vibration noise. In some embodiments, the side wall where the take-in and put-out port 100a is located is formed with a hand hole 100b, and the hand hole 100b is connected to the take-in and put-out port 100a. For example, please refer to Figure 3 and Figure 4 The two hand holes 100b are respectively located on both sides of the take-in and put-out opening 100a along the third direction. The hand holes 100b provide a gripping space for the operator. The operator's hands pass through the hand holes 100b to grab or release the filter net 400, which facilitates the loading and unloading of the filter net 400 and improves the working efficiency.

[0056] In some embodiments, the fresh air device 1000 includes a spring buckle 600 disposed on the partition 200, and the elastic force of the spring buckle 600 presses against the filter 400. For example, please refer to Figure 6 and Figure 7 The spring buckle 600 is located at the end of the filter screen 400 along the second direction. In this way, the assembly method between the filter screen 400 and the partition 200 includes an interference fit. The spring buckle 600 can compensate for the dimensional fluctuation of the filter screen 400 along the second direction and prevent the filter screen 400 from loosening and falling off.

[0057] The spring buckle 600 may be a structure made of a flexible material. A flexible material refers to a material that can produce elastic deformation such as bending, folding, twisting, compressing and / or stretching. Therefore, the inherent characteristics of the spring buckle 600 can reduce the vibration transmitted to the filter 400 during the operation of the fresh air device 1000, thereby preventing the filter 400 from shaking and generating noise.

[0058] Flexible materials include, but are not limited to, plastic, rubber and / or silicone, and the like.

[0059] In some embodiments, the snap 600 includes two elastic arms 610 disposed in the guide groove 200b, and the two elastic arms 610 are located on both sides of the filter screen 400 in the thickness direction to clamp the filter screen 400. For example, please refer to Figure 6 and Figure 7 , the two elastic arms 610 clamp the filter 400 on opposite sides along the third direction. In this way, on the basis of enhancing the stability of the filter 400, the two elastic arms 610 maintain the interval between the filter 400 and the guide groove 200b, reducing the loss caused by the friction between the filter 400 and the wall of the guide groove 200b. The simple structure of the elastic arm 610 can reduce the additional parts required to fix the filter 400, reduce the cost and manufacturing difficulty, and improve production efficiency. In addition, the elastic deformation performance of the elastic arm 610 is used to facilitate the replacement of different types of filter 400.

[0060] In this embodiment, the thickness direction of the filter screen 400 may be consistent with the third direction.

[0061] For some examples, see Figure 6 and Figure 8 The fresh air device 1000 includes a guide rib 700 located on one side of the filter 400 along the third direction, two guide ribs 700 are arranged at intervals along the thickness direction of the filter 400 to form a clamping groove 700a with an inlet and outlet 700a1, the clamping groove 700a includes a flared section 700b connected to the inlet and outlet 700a1, the size of the flared section 700b decreases from the direction close to the inlet and outlet 700a1 to the direction away from the inlet and outlet 700a1, and the filter 400 enters and exits the clamping groove 700a through the inlet and outlet 700a1 and the flared section 700b. Exemplarily, with the plane perpendicular to the second direction as the projection surface, the projection shape of the flared section 700b is roughly trumpet-shaped, and the inlet and outlet 700a1 faces the access opening 100a. In this way, the clamping groove 700a has a positioning and guiding function for the filter screen 400, and the filter screen 400 can smoothly enter and exit the clamping groove 700a through the inlet and outlet 700a1 and the flared section 700b, thereby improving the assembly efficiency of the filter screen 400.

[0062] For some examples, see Figure 3, the filter screen 400 includes at least two filter screen monomers 400a, and at least two filter screen monomers 400a are arranged in parallel along the second direction. Taking two filter screen monomers 400a as an example, taking the plane perpendicular to the first direction as the projection plane, the projection of one filter screen monomer 400a is located outside the projection of the access port 100a, wherein the ends of the two filter screen monomers 400a close to each other along the second direction are located in the guide channel 110b and the clamping groove 700a, and the ends of the two filter screen monomers 400a away from each other along the second direction are respectively located in the two guide grooves 200b.

[0063] Exemplarily, under the limiting and guiding action of the guide channel 110b and the clamping groove 700a, the first filter monomer 400a is placed into the heat exchange chamber 200a through the access port 100a, and the filter monomer 400a is pushed along the second direction to move toward the side away from the access port 100a, and then the second filter monomer 400a is placed into the heat exchange chamber 200a through the access port 100a, so as to realize the parallel arrangement of the two filter monomers 400a. In this way, on the one hand, the contact area between the filter 400 and the airflow is increased, and the filtering performance of the fresh air device 1000 is improved. On the other hand, the opening size of the access port 100a can be reduced, and the design and manufacturing difficulty of the housing 100 can be reduced.

[0064] In some embodiments, the fresh air device 1000 includes a fresh air fan and an exhaust fan, and the partition 200 defines a fan chamber with another part of the space in the housing 100. The fan chamber includes an independent air supply chamber and an exhaust chamber, and the air supply chamber and the exhaust chamber are both located on the same side of the heat exchange chamber 200a along the second direction. The fresh air fan is located in the fresh air chamber, and the exhaust fan is located in the exhaust chamber. In other words, the fresh air fan and the exhaust fan are both located on the same side of the heat exchange core 300 along the second direction. In this way, the fresh air fan, the exhaust fan and the heat exchange core 300 have a compact structure, making full use of the space of the housing 100 along the second direction. Compared with the fresh air fan and the exhaust fan being located on different sides of the heat exchange core 300 along the second direction, the overall size of the fresh air device 1000 can be reduced, miniaturization requirements can be met, and installation space can be saved.

[0065] Furthermore, the space in the housing 100 is divided by the partition 200 to limit the flow direction of the airflow in the housing 100. The fan cavity and the heat exchange core 300 are roughly T-shaped, so that the air flow in the housing 100 is smoother, achieving the effects of large air volume, low energy consumption and quietness.

[0066] Outdoor airflow is usually called fresh air, and indoor airflow is usually called return air. The fresh air fan drives the fresh air flow, that is, drives the outdoor air flow, and the exhaust fan drives the return air flow, that is, drives the indoor air flow.

[0067] The fresh air fan drives the outdoor air flow to flow through the heat exchange core 300, and the exhaust fan drives the indoor air flow to flow through the heat exchange core 300. The indoor air flow and the outdoor air flow meet and exchange heat in the heat exchange core 300 to achieve heat recovery and adjust the temperature and / or humidity of the outdoor air flow entering the room. The fresh air device 1000 realizes the fresh air function and the exhaust function. The fresh air function is the function of outdoor fresh air entering the room, and the exhaust function is the function of indoor dirty air being discharged to the outside.

[0068] For some examples, see Figure 1 , the number of filters 400 is multiple, and the multiple filters 400 include a first filter 410 and a second filter 420. The two side walls of the housing 100 opposite to each other along the third direction respectively form a return air inlet 100c and a fresh air inlet 100d, and the return air inlet 100c and the fresh air inlet 100d are both connected to the heat exchange chamber 200a. The first filter 410 is located on the side of the heat exchange core 300 close to the return air inlet 100c, and the second filter 420 is located on the side of the heat exchange core 300 close to the fresh air inlet 100d. In other words, the indoor airflow enters the heat exchange chamber 200a through the return air inlet 100c and then flows through the first filter 410. The outdoor airflow enters the heat exchange chamber 200a through the fresh air inlet 100d and then flows through the second filter 420. In this way, the first filter 410 and the second filter 420 filter dust, particles, etc. in the indoor airflow and the outdoor airflow respectively, improve the cleanliness of the airflow, keep the heat exchange core 300 clean, and extend the service life of the heat exchange core 300.

[0069] Exemplarily, the first filter 410 and the second filter 420 may both include primary filters.

[0070] For some examples, see Figure 1 The two side walls of the shell 100 opposite to each other along the third direction respectively form an air supply port 100e and an air exhaust port 100f, the air supply port 100e and the air exhaust port 100f are both connected to the fan cavity, the fresh air port 100d and the air exhaust port 100f are located on the same side wall of the shell 100, and the air supply port 100e and the return air port 100c are located on the same side wall of the shell 100.

[0071] The air supply port 100e is used to guide the outdoor air flow in the housing 100 out of the housing 100. The air discharge port 100f is used to guide the indoor air flow in the housing 100 out of the housing 100.

[0072] For ease of description, two side walls of the housing 100 opposite to each other along the third direction are defined as a first side wall and a second side wall, for example, the return air inlet 100c and the supply air inlet 100e can be formed on the first side wall, and the fresh air inlet 100d and the exhaust air inlet 100f can be formed on the second side wall. In this way, the return air inlet 100c and the fresh air inlet 100d are located on both sides of the heat exchange core 300 along the third direction, and the supply air inlet 100e and the exhaust air inlet 100f are located on both sides of the fan cavity along the second direction.

[0073] In this embodiment, the return air inlet 100c and the fresh air inlet 100d are located on both sides of the heat exchange core 300 along the third direction, and the supply air inlet 100e and the exhaust air inlet 100f are located on both sides of the fan cavity along the third direction. On the one hand, it is convenient for the return air inlet 100c, the supply air inlet 100e, the fresh air inlet 100d and the exhaust air inlet 100f to be externally connected to the air duct to avoid interference between the air duct and the ceiling panel and the ceiling, and it can also avoid the problem of too large size caused by the formation of the above-mentioned air inlets on more than two side walls of the outer shell 100; on the other hand, the indoor airflow and the outdoor airflow flow smoothly in the outer shell 100, which can reduce eddy currents.

[0074] For some examples, see Figure 1 The plurality of filters 400 include a third filter 430, which is located between the second filter 420 and the heat exchange core 300. As an additional filtering layer, the third filter 430 can further intercept fine impurities and bacteria and viruses that penetrate the second filter 420, protect the cleanliness of the heat exchange core 300, and maintain the long-term efficient operation of the fresh air device 1000.

[0075] Exemplarily, the third filter 430 may include a high-efficiency filter, which includes but is not limited to HEPA (High Efficiency Particulate Air Filter) and / or HAF (High Air Flow, ultra-large flow electrostatic filter).

[0076] In some embodiments, the heat exchange core 300 extends along the second direction, and the circumferential surface of the heat exchange core 300 surrounding the second direction includes a return air inlet surface and a fresh air inlet surface, the return air inlet surface is inclined toward the return air port 100c, and the fresh air inlet surface is inclined toward the fresh air port 100d.

[0077] The extension of the heat exchange core 300 along the second direction means that the airflow enters or flows out of the heat exchange core 300 from the circumferential surface surrounding the second direction. For example, the extension of the heat exchange core 300 along the second direction may be that a plurality of heat exchange medium sheets of the heat exchange core 300 are stacked at intervals along the second direction. The heat exchange medium sheets are used for heat exchange between indoor airflow and outdoor airflow.

[0078] It should be understood that the indoor airflow from the return air outlet 100c enters the heat exchange core 300 through the return air inlet surface, and the outdoor airflow from the fresh air outlet 100d enters the heat exchange core 300 through the fresh air inlet surface, and the indoor airflow and the outdoor airflow enter the heat exchange core 300 from two opposite sides in a third direction respectively. On the one hand, the return air outlet 100c is opposite to the return air inlet surface, and the fresh air outlet 100d is opposite to the fresh air inlet surface, which can reduce the 90° turn in the airflow process, make the air path smoother, reduce eddy currents and the generated wind noise, and has the characteristics of large air volume, low energy consumption and low noise; on the other hand, it can extend the heat exchange time of the indoor airflow and the outdoor airflow in the heat exchange core 300, thereby improving the heat exchange efficiency.

[0079] In some embodiments, the partition 200 includes a partition plate, which connects the heat exchange core 300 and the surrounding area of ​​the return air outlet 100c to separate the heat exchange chamber 200a into a return air channel and a supply air channel. The return air channel is located on the first side of the supply air channel along the first direction, and the return air inlet surface is a partial surface of the return air channel.

[0080] The return air channel is used to transport the indoor airflow to the heat exchange core 300, that is, the return air channel is used to transport the indoor airflow before heat exchange. The supply air channel is used to transport the outdoor airflow from the heat exchange core 300, that is, the supply air channel is used to transport the outdoor airflow after heat exchange. The return air channel and the supply air channel are independent of each other, that is, the indoor airflow in the return air channel does not enter the supply air channel, the outdoor airflow in the supply air channel does not enter the return air channel, and no gas flows between the return air channel and the supply air channel.

[0081] The indoor airflow enters the return air duct along the third direction, and flows along the surface of the partition plate toward the return air inlet surface. The partition plate plays a guiding role. The indoor airflow from the return air outlet 100c can enter the return air duct without turning at a large angle such as 90°, thereby reducing the resistance of the indoor airflow during flow and reducing noise.

[0082] In some embodiments, the partition 200 includes an isolation plate, which connects the heat exchange core 300 and the surrounding area of ​​the fresh air outlet 100d to separate the heat exchange chamber 200a into a fresh air channel and an exhaust air channel. The fresh air channel is located on the first side of the exhaust air channel along the first direction, and the fresh air inlet surface is a partial surface of the fresh air channel.

[0083] The fresh air channel is used to transport outdoor air to the heat exchange core 300, that is, the fresh air channel is used to transport outdoor air before heat exchange. The exhaust air channel is used to transport indoor air from the heat exchange core 300, that is, the exhaust air channel is used to transport indoor air after heat exchange. The fresh air channel and the exhaust air channel are independent of each other, that is, the outdoor air in the fresh air channel does not enter the exhaust air channel, the indoor air in the exhaust air channel does not enter the fresh air channel, and no gas flows between the fresh air channel and the exhaust air channel.

[0084] The outdoor airflow enters the fresh air channel along the third direction, and flows along the surface of the isolation plate toward the fresh air inlet surface. The isolation plate plays a guiding role. The outdoor airflow from the fresh air outlet 100d can enter the fresh air channel without turning at a large angle such as 90°, thereby reducing the resistance of the outdoor airflow during flow and reducing noise.

[0085] For some examples, see Figure 2 The housing 100 includes a cover 120 and a shell 130. The shell 130 forms a placement space. The cover 120 closes the opening of the placement space. The partition 200 defines part of the placement space as a heat exchange chamber 200a. In this way, the filter 400, the heat exchange core 300 and other components are hidden in the placement space and do not occupy external space. The appearance of the fresh air device 1000 is neat and beautiful. The cover 120 can prevent external impurities from entering the placement space and protect the components in the placement space.

[0086] For example, the fresh air device 1000 is installed on the ceiling. At this time, the opening of the placement space faces downward, and the cover 120 closes the downward opening of the placement space. In this way, the cover 120 can prevent the parts in the placement space from loosening and falling out, thereby improving the safety of the operator installing the fresh air device 1000 and the user using the fresh air device 1000.

[0087] In the description of this specification, the description with reference to the terms "an embodiment", "some embodiments" and "exemplary" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0088] The various embodiments / implementations provided in this application can be combined with each other without causing any contradiction. The above description is only a preferred embodiment of this application and is not intended to limit this application. For those skilled in the art, this application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included in the protection scope of this application.

Claims

1. A fresh air device, characterized in that: include: shell; a partition, wherein the partition defines a portion of the space in the shell as a heat exchange cavity, and the partition is formed with a guide groove extending along a first direction; A heat exchange core is arranged in the heat exchange cavity; A filter screen is arranged in the heat exchange cavity, and an end of the filter screen along the second direction is located in the guide groove, wherein the first direction is perpendicular to the second direction.

2. The fresh air device according to claim 1, characterized in that: A side wall of the shell along the first direction is formed with a take-in / take-out port and a folded edge, the take-in / take-out port is connected to the heat exchange cavity, the folded edge extends from the take-in / take-out port to the heat exchange cavity, and the filter screen enters and exits the heat exchange cavity through the take-in / take-out port under the guidance of the folded edge.

3. The fresh air device according to claim 2, characterized in that: The fresh air device includes an inspection cover, which is connected to the shell to selectively cover or open the access port.

4. The fresh air device according to claim 2, characterized in that: The two folded edges are spaced apart along the third direction to define a guide channel, the guide channel and the guide groove are spaced apart along the second direction, and the two ends of the filter net along the second direction are respectively located in the guide groove and the guide channel, wherein the first direction, the second direction and the third direction are perpendicular to each other.

5. The fresh air device according to claim 2, characterized in that: A hand hole is formed on the side wall where the taking-in / taking-out opening is located, and the hand hole is communicated with the taking-in / taking-out opening.

6. The fresh air device according to claim 1, characterized in that: The fresh air device includes a spring buckle arranged on the partition, and the elastic force of the spring buckle presses against the filter screen.

7. The fresh air device according to claim 6, characterized in that: The spring buckle comprises two elastic arms arranged in the guide groove, and the two elastic arms are located on both sides of the filter screen in the thickness direction to clamp the filter screen.

8. The fresh air device according to claim 1, characterized in that: The fresh air device includes a guide rib located on one side of the filter along the third direction, and two of the guide ribs are arranged at intervals along the thickness direction of the filter to form a clamping groove with an inlet and outlet, and the clamping groove includes a flared section connected to the inlet and outlet, and the size of the flared section decreases from close to the inlet and outlet to away from the inlet and outlet, and the filter enters and exits the clamping groove through the inlet and outlet and the flared section.

9. The fresh air device according to any one of claims 1 to 8, characterized in that: There are multiple filters, including a first filter and a second filter. The two opposite side walls of the outer shell along the third direction respectively form a return air inlet and a fresh air inlet. Both the return air inlet and the fresh air inlet are connected to the heat exchange chamber. The first filter is located on a side of the heat exchange core close to the return air inlet, and the second filter is located on a side of the heat exchange core close to the fresh air inlet.

10. The fresh air device according to claim 9, characterized in that: The plurality of filter screens include a third filter screen, and the third filter screen is located between the second filter screen and the heat exchange core.

Images