A heat recovery fresh air component

Abstract

The utility model relates to a fresh air equipment technical field, concretely relates to a heat recovery fresh air component, including the casing, the casing surface is provided with the air inlet and the air outlet, the air inlet sets up in the casing front middle part, the air outlet sets up in the casing side, the fan includes the backplate and the piece, the backplate is connected with the output fixedly of motor, the air inlet is fixedly connected with the flow guide ring, the flow guide ring is fixedly connected with the isolation ring coaxial with it outside, the inboard fixedly connected with annular plate of flow guide ring is parallel to the backplate, and the clearance fit between annular plate and blade end face, flow guide ring, isolation ring and annular plate jointly enclose and constitute a with the heat insulation cavity of casing inner air duct isolation, and the outer fixed surface of isolation ring is connected with the heat insulation cavity intercommunication and extends to the pipe of casing outside, the fresh air is first in the air inlet and fan area and is heated preliminarily by the heat in the heat insulation cavity through heat conduction mode, and then under the impetus of fan, enters the heating chamber of outer layer, and is heated secondarily by the hot air flow around.

Description

Technical Field

[0001] This utility model relates to the field of fresh air equipment technology, specifically to a heat recovery fresh air component. Background Technology

[0002] Fresh air exchangers can replace and purify indoor and outdoor air, regulate temperature and humidity, and improve indoor air quality. In indoor air conditioning systems, when the temperature difference between indoors and outdoors is large, the fresh air load accounts for a large proportion, resulting in high energy consumption. Existing equipment mostly uses common plate or rotary heat exchange structures for heat recovery, which suffers from limited heat exchange area, short airflow paths, and insufficient heat exchange. Especially when facing high wind resistance or long delivery distances, it easily leads to insufficient outlet air pressure, affecting the effective delivery of fresh air. Some designs improve heat exchange by increasing the core volume or optimizing the flow channel shape, but this often results in an increase in the overall size of the equipment. Utility Model Content

[0003] To address the shortcomings of existing technologies, this invention provides a heat recovery fresh air component that achieves more efficient heat exchange within a limited space while ensuring sufficient air supply pressure.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A heat recovery fresh air component includes a housing and a motor disposed on the back of the housing. The output end of the motor extends into the housing and is fixedly connected to a fan. The housing surface is provided with an air inlet and an air outlet. The air inlet is located in the center of the front of the housing, and the air outlet is located on the side of the housing. The fan includes a back plate and blades evenly distributed in the circumferential direction and fixedly connected to the surface of the back plate. The back plate is fixedly connected to the output end of the motor. A guide ring is fixedly connected to the air inlet. An isolation ring coaxial with the guide ring is fixedly connected to the outside of the guide ring. An annular plate parallel to the back plate is fixedly connected to the inside of the guide ring. The annular plate and the blade end face are clearance-fitted. The guide ring, isolation ring, and annular plate together form a heat-insulated cavity isolated from the air duct inside the housing. A duct communicating with the heat-insulated cavity and extending to the outside of the housing is fixedly connected to the outer surface of the isolation ring.

[0006] Furthermore, the housing is volute-shaped, the air outlet is located at the maximum diameter of the housing, an arc-shaped guide plate is provided inside the housing, the arc-shaped guide plate is arranged around the outer periphery of the fan, and the arc-shaped guide plate has an airflow channel at the point where the distance between it and the inner wall of the housing is the smallest; a heating chamber for airflow to circulate is formed between the arc-shaped guide plate and the isolation ring.

[0007] Furthermore, a first connecting ring is fixedly connected to the outside of the flow guide ring, and a second connecting ring is fixedly connected to the end face of the isolation ring. The first connecting ring and the second connecting ring are jointly fixed to the inner wall of the front side of the housing by screws.

[0008] Furthermore, a sealing ring is formed by protruding in the middle of the annular plate in the direction of the flow guide ring, and the sealing ring extends into the inner side of the flow guide ring and forms an interference fit with the inner wall of the flow guide ring.

[0009] Furthermore, the inner wall surfaces of the guide ring and the sealing ring are smoothly transitioned curved surfaces.

[0010] Furthermore, it also includes a bracket, on which the motor and housing are fixedly connected.

[0011] This utility model embodiment provides a heat recovery fresh air component. It has the following beneficial effects:

[0012] The motor drives the fan to rotate, generating a vortex-like airflow within the casing, increasing the exhaust air pressure. The fresh air is initially preheated by heat conduction within the insulated cavity at the air inlet and fan area. Then, propelled by the fan, it enters the outer heating chamber, where it is further heated by the surrounding hot airflow. This inside-out enveloping heating method significantly increases the heat exchange area and time, dramatically improving heat recovery efficiency. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0015] Figure 3 This is a schematic diagram of the exploded structure of this utility model;

[0016] Figure 4 This is a schematic diagram of the flow guide ring and isolation ring in this utility model;

[0017] Figure 5 This is a schematic diagram of the shell structure;

[0018] In the diagram: 1. Housing; 101. Air inlet; 102. Air outlet; 2. Motor; 3. Fan; 301. Back plate; 302. Blades; 4. Guide ring; 401. First connecting ring; 5. Isolation ring; 501. Second connecting ring; 6. Annular plate; 601. Sealing ring; 7. Insulation cavity; 8. Conduit; 9. Arc-shaped guide plate; 10. Heating chamber; 11. Support. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] This utility model relates to a heat recovery fresh air component, mainly used in building ventilation systems, especially in winter or cold environments. It preheats fresh air by recovering heat from exhaust gas, improving energy efficiency. Through a unique design of insulated cavities and heating chambers, this component achieves multi-stage heating of fresh air, ensuring a suitable temperature for the air entering the room while reducing energy consumption.

[0021] Please see Figures 1 to 5 The heat recovery fresh air component includes a housing 1, a motor 2, a fan 3, a guide ring 4, an isolation ring 5, an annular plate 6, a heat-insulating cavity 7, a duct 8, an arc-shaped guide plate 9, a heating chamber 10, and a support 11. The housing 1 has a volute-like structure with an air inlet 101 at the center of its front and an air outlet 102 on its side. The air outlet 102 is located at the maximum diameter of the housing 1 to optimize airflow output. The motor 2 is fixedly mounted on the back of the housing 1, with its output end extending into the housing 1 and fixedly connected to the back plate 301 of the fan 3. The fan 3 includes a back plate 301 and multiple blades 302 evenly distributed circumferentially. The blades 302 are fixedly connected to the surface of the back plate 301. The back plate 301 is fixed to the output end of the motor 2 by bolts or welding to ensure stable and reliable rotation of the fan 3 driven by the motor 2.

[0022] A guide ring 4 is fixedly connected to the air inlet 101. The outer side of the guide ring 4 is connected to the second connecting ring 501 of the isolation ring 5 via a first connecting ring 401, and is fixed to the inner wall of the front of the housing 1 by fasteners such as screws or clips, thereby ensuring the coaxial installation of the guide ring 4 and the isolation ring 5. An annular plate 6 is fixedly connected to the inner side of the guide ring 4. The annular plate 6 is set parallel to the back plate 301 of the fan 3, and the annular plate 6 maintains a clearance fit with the end face of the blade 302 to avoid rotational interference. The guide ring 4, the isolation ring 5, and the annular plate 6 together form a sealed heat-insulating cavity 7, which is isolated from the air duct inside the housing 1. A duct 8 is fixedly connected to the outer surface of the isolation ring 5. The duct 8 communicates with the heat-insulating cavity 7 and extends to the outside of the housing 1 to introduce hot airflow.

[0023] Further, please refer to Figure 5An arc-shaped guide plate 9 is provided inside the housing 1, surrounding the outer periphery of the fan 3, and an airflow channel is formed at the point where the distance between the arc-shaped guide plate 9 and the inner wall of the housing 1 is minimized. A heating chamber 10 is formed between the arc-shaped guide plate 9 and the isolation ring 5, allowing airflow to circulate and enhance heat exchange. A sealing ring 601 is formed by the protrusion of the annular plate 6 in the middle of the guide ring 4. The sealing ring 601 extends into the inner side of the guide ring 4 and forms an interference fit with the inner wall of the guide ring 4 to ensure the sealing of the heat insulation cavity 7. The inner wall surfaces of the guide ring 4 and the sealing ring 601 are smoothly curved to reduce airflow resistance and improve air intake efficiency.

[0024] In addition, the component also includes a bracket 11, and the motor 2 and housing 1 are fixedly connected to the bracket 11 by bolts, which facilitates installation and overall fixation.

[0025] Working Principle: During operation, motor 2 drives fan 3 to rotate. External air is drawn in through inlet 101 and, guided by guide ring 4 and sealing ring 601, enters the fan 3 area. Simultaneously, recovered waste gas is injected into the insulated cavity 7 through duct 8. Because the insulated cavity 7 is isolated from the internal air duct of the casing 1, the hot airflow does not directly mix with the fresh air, but instead preheats the air in inlet 101 and the fan 3 area through heat conduction. Subsequently, the air enters the heating chamber 10 under the push of fan 3. The heating chamber 10 surrounds the fan 3 and the insulated cavity 7. Guided by arc-shaped guide plate 9, the air circulates within the heating chamber 10, further absorbing heat, and is finally discharged from outlet 102. This multi-stage heating design significantly improves heat recovery efficiency and is particularly suitable for fresh air systems in cold regions.

[0026] This invention achieves efficient preheating of fresh air through the synergistic effect of the heat-insulating cavity and the heating chamber. It has a compact structure, is easy to install, and is energy-saving and environmentally friendly.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0028] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A heat recovery fresh air component, comprising a housing and a motor disposed on the back of the housing, wherein the output end of the motor extends into the housing and is fixedly connected to a fan, and the surface of the housing is provided with an air inlet and an air outlet, characterized in that: The air inlet is located in the center of the front of the housing, and the air outlet is located on the side of the housing. The fan includes a back plate and blades evenly distributed in the circumferential direction and fixedly connected to the surface of the back plate. The back plate is fixedly connected to the output end of the motor. A guide ring is fixedly connected to the air inlet. An isolation ring coaxial with the guide ring is fixedly connected to the outside of the guide ring. An annular plate parallel to the back plate is fixedly connected to the inside of the guide ring. The annular plate and the blade end face are fitted with a clearance. The guide ring, isolation ring and annular plate together form a heat-insulating cavity that is isolated from the air duct inside the housing. A duct that communicates with the heat-insulating cavity and extends to the outside of the housing is fixedly connected to the outer surface of the isolation ring.

2. The heat recovery fresh air component as described in claim 1, characterized in that: The housing is volute-shaped, the air outlet is located at the maximum diameter of the housing, an arc-shaped guide plate is provided inside the housing, the arc-shaped guide plate is arranged around the outer periphery of the fan, and an airflow channel is opened at the point where the arc-shaped guide plate is at the minimum distance from the inner wall of the housing; a heating chamber for airflow to circulate is formed between the arc-shaped guide plate and the isolation ring.

3. A heat recovery fresh air component as described in claim 1 or 2, characterized in that: The flow guide ring is fixedly connected to the outside of a first connecting ring, and the end face of the isolation ring is fixedly connected to a second connecting ring. The first connecting ring and the second connecting ring are fixed together to the inner wall of the front of the housing by screws.

4. A heat recovery fresh air component as described in claim 1, characterized in that: A sealing ring is formed by a protrusion in the middle of the annular plate in the direction of the flow guide ring. The sealing ring extends into the inner side of the flow guide ring and forms an interference fit with the inner wall of the flow guide ring.

5. A heat recovery fresh air component as described in claim 4, characterized in that: The inner wall surfaces of the guide ring and sealing ring are smoothly curved.

6. A heat recovery fresh air component as described in claim 1, characterized in that: It also includes a bracket, on which the motor and housing are fixedly connected.

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