Heat exchange device of heat recovery fresh air ventilator

Abstract

The utility model provides a heat exchange device of a heat recovery fresh air ventilator, which relates to the technical field of ventilator units and comprises a ventilator main body, a dirty air return port arranged on the back of one side of the ventilator main body, a fresh air supply port arranged on the front of one side of the ventilator main body, and a dirty air exhaust port arranged on the front of the other side of the ventilator main body. A fresh air inlet is formed in the back face of the other side of the ventilator body, a heat exchange machine core is installed in the middle in the ventilator body, the heat exchange machine core is distributed in a stepped mode by adopting unique multi-layer core plates and heat exchange plates in a staggered press fit mode, and by combining the ingenious design of a first air pipeline, a spiral second air pipeline and capillary straight pipes in a built-in channel, the heat exchange efficiency is improved. The contact path and time of fresh air and dirty air are greatly prolonged, an inner cavity spoiler of the first air pipeline enables airflow to form turbulent flow, heat exchange is enhanced, and the spiral shape of the capillary branch pipeline further optimizes heat transfer.

Description

TECHNICAL FIELD

[0001] The utility model relates to a ventilation unit technical field especially relates to a heat recovery fresh air ventilator heat exchange device. BACKGROUND

[0002] With people's attention to indoor air quality and the enhancement of energy conservation and environmental protection consciousness, heat recovery fresh air ventilators have been widely used in building ventilation systems. In modern buildings, especially in places such as well-sealed residences and office buildings, in order to ensure the freshness and health of indoor air, it is necessary to continuously introduce outdoor fresh air while discharging indoor polluted air. Heat recovery fresh air ventilators have emerged as the times require. They can achieve heat recovery during ventilation and reduce energy loss caused by ventilation, thereby improving energy utilization efficiency.

[0003] According to the new air heat recovery unit of the utility model, it is related to the ventilation unit field, aims at solving the problem that the filter screen of the ceiling type fresh air ventilator is inconvenient to replace, and the technical scheme points are: including the body and the new air channel and the turbid gas channel which are arranged in the body and cross each other, the filter assembly is arranged in the new air channel, the opening for putting the filter assembly into the body is formed in the outer wall of the body, the detachable connection of the baffle is arranged in the opening along the vertical direction, a plurality of clamping grooves for embedding the filter assembly are formed in the baffle, and the baffle moves towards or away from the body along the vertical direction. The new air heat recovery unit of the utility model achieves the effect of convenient replacement of the filter screen through the structure, and the heat exchange device is arranged in the body, so that the body can achieve the effect of heat recovery.

[0004] Traditional heat recovery fresh air ventilators generally include a body, a new air channel and a turbid gas channel arranged in the body, and heat exchange is achieved to realize heat transfer between the new air and the turbid gas, thereby achieving the purpose of energy saving. However, the prior art has the following problems: in terms of heat exchange devices, the heat exchange structure of some conventional devices is relatively simple, and a flat plate type heat exchange core is generally used. The flow path of the new air and the turbid gas in the heat exchange core is relatively single, and the contact time is limited, which makes it difficult to further improve the heat exchange efficiency. Moreover, the air flow in the heat exchange core is not processed finely, and the flow characteristics of the air cannot be fully utilized to enhance the heat exchange effect. Therefore, a heat recovery fresh air ventilator heat exchange device is needed to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the shortcomings in the prior art and provides a heat recovery fresh air ventilator heat exchange device.

[0006] In order to achieve the above object, the utility model discloses the following technical scheme: a heat recovery fresh air ventilator heat exchange device, including the ventilator main part, the back of one side of ventilator main part is equipped with the dirty air return air opening, the front of one side of ventilator main part is equipped with the fresh air supply air opening, the front of the other side of ventilator main part is equipped with the dirty air exhaust, the back of the other side of ventilator main part is equipped with the fresh air inlet, the middle portion in ventilator main part is installed with the heat exchange core, the front and back of heat exchange core are all installed with the encapsulation board, and the middle portion of the front of ventilator main part is equipped with the maintenance door.

[0007] The ventilation process of the whole ventilator main part is same as the existing equipment, and the whole heat exchange core is formed by the interlaced pressing of multiple core plates and heat exchange plates, and the whole plate layer is distributed in a ladder shape.

[0008] Preferably, the middle portion of the heat exchange core is provided with an internal channel, the first air pipe is placed in the internal channel, the second air pipe is wound outside the first air pipe, and the second air pipe is in a spiral shape.

[0009] The first air pipe and the second air pipe are interwoven in the internal channel.

[0010] Preferably, the top and bottom of the second air pipe are cross-distributed with capillary straight pipes, and the internal portion of the capillary straight pipe is provided with a resistance block.

[0011] The top and bottom of the second air pipe are provided with multiple groups of capillary straight pipes.

[0012] Preferably, the shape of the internal channel is same as the combined shape of the first air pipe, the second air pipe and the capillary straight pipe.

[0013] Preferably, the middle portion of the front of the first air pipe is provided with an internal cavity, the internal cavity in the first air pipe is located on one side of the whole first air pipe, and the length of the internal cavity is one third of the first air pipe.

[0014] When external gas enters the first air pipe, it first enters the internal cavity from the middle portion, and then enters the capillary sub-pipe from the gas inlet pipe at the end of the internal cavity.

[0015] Preferably, the shape of the internal cavity is circular, and the internal portion of the internal cavity is annularly arrayed with a spoiler.

[0016] Preferably, the internal surface of the first air pipe is annularly arrayed with a capillary sub-pipe, and the outer side of the capillary sub-pipe is closed.

[0017] Preferably, the end of the internal cavity is annularly arrayed with a gas inlet pipe, the gas inlet pipe and the capillary sub-pipe in the internal surface of the first air pipe are communicated, and the internal shape of the capillary sub-pipe is spiral.

[0018] Advantages

[0019] In the utility model, the heat exchanger core adopts the unique multilayer core plate and the staggered compression of the heat exchange plate to be distributed in a ladder shape, and in combination with the ingenious design of the first air duct, the spiral second air duct and the capillary straight pipe in the built-in channel, the contact path and time of fresh air and dirty air are greatly prolonged, the inner cavity spoiler of the first air duct makes the airflow form turbulent flow, enhances heat exchange, and the spiral shape of the capillary pipe further optimizes heat transfer, and this efficient heat exchange mechanism ensures that heat can be fully recovered in the air exchange process, significantly reduces the additional energy consumption required for adjusting the temperature of fresh air, greatly improves the overall energy saving efficiency of the heat recovery fresh air exchanger compared with traditional equipment, effectively reduces the operating cost, and meets the requirements of modern buildings for energy efficient use and sustainable development.

[0020] In the utility model, the fresh air enters from the fresh air inlet, first enters the inner cavity of the first air duct, and then enters the capillary pipe subduct after fully exchanging heat under the action of the spoiler, and since the first air duct and the second air duct are tightly wound and have good heat conduction performance, heat exchange is realized between the dirty air and the fresh air through the pipe wall, the fresh air after heat exchange is sent into the room from the fresh air outlet, and the dirty air is discharged to the outside from the dirty air outlet, and in the whole process, the special structure of the heat exchange core and the airflow treatment design in each pipe make the heat exchange process efficient and stable, effectively improve the performance of the whole heat recovery fresh air exchanger, and provide more comfortable and energy-saving air environment for the room. BRIEF DESCRIPTION OF DRAWINGS

[0021] Fig. 1 It is the overall internal structure diagram of the utility model;

[0022] Fig. 2 It is the heat exchange core structure diagram of the utility model;

[0023] Fig. 3 It is the internal structure diagram of the heat exchange core of the utility model;

[0024] Fig. 4 It is the internal structure diagram of the capillary straight pipe of the utility model;

[0025] Fig. 5 It is the first air duct structure diagram of the utility model;

[0026] Fig. 6 It is the internal structure diagram of the first air duct of the utility model.

[0027] Legend:

[0028] 1, ventilator main body; 2, dirty air return air outlet; 3, fresh air supply outlet; 4, fresh air inlet; 5, dirty air exhaust; 6, heat exchanger core; 7, packaging plate; 8, built-in channel; 9, first air duct; 10, second air duct; 11, capillary straight pipe; 12, resistance block; 13, inner cavity; 14, spoiler; 15, air inlet; 16, capillary tube sub-pipe; 17, maintenance door. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the following will further describe the utility model in combination with specific embodiments and drawings, but the following embodiments are only preferred embodiments of the utility model, not all. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0030] The specific embodiments of the utility model will be described below in combination with the drawings. Embodiment one:

[0032] Reference Figs. 1-6 A heat recovery fresh air ventilator heat exchange device, comprising a ventilator main body 1, the back of one side of the ventilator main body 1 is provided with a dirty air return air outlet 2, the front of one side of the ventilator main body 1 is provided with a fresh air supply outlet 3, the front of the other side of the ventilator main body 1 is provided with a dirty air exhaust 5, the back of the other side of the ventilator main body 1 is provided with a fresh air inlet 4, the middle of the ventilator main body 1 is provided with a heat exchanger core 6, the front and back of the heat exchanger core 6 are provided with a packaging plate 7, and the middle of the front of the ventilator main body 1 is provided with a maintenance door 17.

[0033] The ventilation process of the whole ventilator main body 1 is the same as that of the existing equipment, and the whole heat exchanger core 6 is formed by interlacing and pressing a plurality of core plates and heat exchange plates, and the whole plate layer is distributed in a stepped manner.

[0034] The middle of the heat exchanger core 6 is provided with a built-in channel 8, the first air duct 9 is placed in the built-in channel 8, the second air duct 10 is wound outside the first air duct 9, and the shape of the second air duct 10 is spiral.

[0035] The first air duct 9 and the second air duct 10 are interwoven in the built-in channel 8.

[0036] The top and bottom of the second air duct 10 are cross-distributed with capillary straight pipes 11, and the inside of the capillary straight pipes 11 is provided with resistance blocks 12.

[0037] The top and bottom of the second air duct 10 are provided with a plurality of capillary straight pipes 11.

[0038] The shape inside the built-in channel 8 is the same as the shape of the combination of the first air duct 9, the second air duct 10 and the capillary straight pipe 11.

[0039] The middle part of the front face of the first air duct 9 is provided with an inner cavity 13, the inner cavity 13 in the first air duct 9 is located on one side of the whole first air duct 9, and the length of the inner cavity 13 is one third of the first air duct 9.

[0040] When the external gas enters the first air duct 9, it first enters the inner cavity 13 from the middle part, and then enters the capillary sub-duct 16 from the gas inlet pipe 15 at the end of the inner cavity 13.

[0041] The shape of the inner cavity 13 is circular, and the inner cavity 13 is internally provided with a ring-shaped array of spoilers 14.

[0042] The inner surface of the first air duct 9 is internally provided with a ring-shaped array of capillary sub-ducts 16, and the outer side of the capillary sub-ducts 16 is closed.

[0043] The end of the inner cavity 13 is internally provided with a ring-shaped array of gas inlet pipes 15, the gas inlet pipes 15 are in communication with the capillary sub-ducts 16 in the inner surface of the first air duct 9, and the inner shape of the capillary sub-ducts 16 is spiral. Specific embodiment two:

[0045] Reference Figs. 1-6, the heat exchanger core 6 is formed by interleaving and pressing multiple core plates and heat exchange plates, and the overall plate layers are distributed in a stepped manner. The stepped distribution helps to increase the residence time of air in the heat exchanger core and the complexity of the flow path, thereby improving the heat exchange efficiency. The first air duct 9 and the second air duct 10 are made of metal materials with excellent heat conduction performance, which can be selected as copper pipes to ensure that heat can be quickly transferred. The top and bottom of the second air duct 10 are cross-distributed with capillary straight pipes 11, and the inside of the capillary straight pipes 11 is provided with resistance blocks 12. Multiple groups of capillary straight pipes 11 can further subdivide the airflow and enhance the heat exchange effect. The shape of the built-in channel 8 is the same as the combination of the first air duct 9, the second air duct 10, and the capillary straight pipes 11, which ensures that the air flows smoothly in the channel and fully contacts for heat exchange. When the external air enters the first air duct 9, it first enters the inner cavity 13 from the middle. At this time, the spoiler 14 begins to play its key role. They will make the airflow entering the inner cavity form a strong turbulent state. This turbulence is not a chaotic disorder, but a carefully designed one. It can greatly increase the friction and collision between the air and the inner cavity pipe wall, thereby significantly expanding the contact area between the air and the pipe wall and greatly improving the heat exchange efficiency. After sufficient heat exchange in the inner cavity 13, the air will enter the capillary pipe sub-duct 16 in an orderly manner from the air inlet pipe 15 at the end of the inner cavity 13. The outside of the capillary pipe sub-duct 16 is completely sealed, and the inside is designed in a spiral shape. This spiral structure again prolongs the flow path of the air in the duct, allowing the air to exchange heat more slowly and fully in it, not missing any possible heat exchange opportunity, ensuring the integrity and efficiency of the entire heat exchange process.

[0046] The fresh air enters from the fresh air inlet 4, first enters the inner cavity 13 of the first air duct 9, and then enters the capillary pipe sub-duct 16 after sufficient heat exchange under the action of the spoiler 14. Due to the close winding and good heat conduction performance of the first air duct 9 and the second air duct 10, heat exchange between the dirty air and the fresh air is realized through the pipe wall, and heat recovery is achieved. The fresh air after heat exchange is sent into the room from the fresh air outlet 3, and the dirty air is discharged outside from the dirty air outlet 5. In the entire process, the special structure of the heat exchanger core 6 and the airflow treatment design in each duct make the heat exchange process efficient and stable, effectively improving the performance of the entire heat recovery fresh air exchanger, and providing a more comfortable and energy-saving air environment for the room.

[0047] In summary:

[0048] 1. In this device, the heat exchange core 6 is composed of multiple layers of core plates and heat exchange plates that are alternately pressed together. The overall plates are distributed in a stepped manner. This stepped distribution helps to increase the residence time of air in the heat exchange core and the complexity of the flow path, thereby improving the heat exchange efficiency. The first air duct 9 and the second air duct 10 are made of metal materials with excellent thermal conductivity. Copper tubes can be selected to ensure that heat can be transferred quickly. Capillary straight tubes 11 are distributed at the top and bottom of the second air duct 10. The capillary straight tubes 11 are equipped with baffle blocks 12 inside. Multiple sets of capillary straight tubes 11 can further subdivide the airflow and enhance the heat exchange effect. The shape of the inside of the built-in channel 8 is the same as the shape of the combination of the first air duct 9, the second air duct 10 and the capillary straight tubes 11, ensuring that the air flows smoothly and makes full contact for heat exchange in the channel.

[0049] 2. Fresh air enters through the fresh air inlet 4, first entering the inner cavity 13 of the first air duct 9. After sufficient heat exchange under the action of the baffle 14, it enters the capillary branch duct 16. Since the first air duct 9 and the second air duct 10 are tightly wrapped and have good thermal conductivity, heat exchange occurs between the stale air and the fresh air through the duct wall, achieving heat recovery. After heat exchange, the fresh air is sent into the room through the fresh air outlet 3, while the stale air is discharged to the outside through the stale air outlet 5. Throughout the process, the special structure of the heat exchange core 6 and the airflow treatment design in each duct make the heat exchange process efficient and stable, effectively improving the performance of the entire heat recovery fresh air exchanger and providing a more comfortable and energy-saving air environment for the room.

[0050] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0051] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A heat recovery fresh air ventilator heat exchange device comprising a ventilator main body (1), characterized in that: The back side of one side of the ventilator body (1) is provided with a dirty air return air outlet (2), the front side of one side of the ventilator body (1) is provided with a fresh air supply outlet (3), the front side of the other side of the ventilator body (1) is provided with a dirty air exhaust outlet (5), the back side of the other side of the ventilator body (1) is provided with a fresh air inlet (4), the middle part of the ventilator body (1) is provided with a heat exchanger core (6), the front and back of the heat exchanger core (6) are provided with packaging plates (7), and the middle part of the front of the ventilator body (1) is provided with a maintenance door (17).

2. The heat recovery fresh air ventilator heat exchange device according to claim 1, characterized in that: The middle part of the heat exchanger core (6) is provided with an embedded channel (8), the first air pipe (9) is placed in the embedded channel (8), the second air pipe (10) is wound outside the first air pipe (9), and the shape of the second air pipe (10) is spiral.

3. The heat recovery fresh air ventilator heat exchanging device according to claim 2, characterized in that: The top and bottom of the second air pipe (10) are cross-distributed with capillary straight pipes (11), and the inside of the capillary straight pipes (11) is provided with resistance blocks (12).

4. The heat recovery fresh air ventilator heat exchanging device according to claim 3, characterized in that: The shape of the inside of the embedded channel (8) is the same as the combined shape of the first air pipe (9), the second air pipe (10) and the capillary straight pipe (11).

5. The heat recovery fresh air ventilator heat exchanging device according to claim 4, characterized in that: The middle part of the front of the first air pipe (9) is provided with an inner cavity (13), the inner cavity (13) in the first air pipe (9) is located on one side of the entire first air pipe (9), and the length of the inner cavity (13) is one third of the first air pipe (9).

6. The heat recovery fresh air ventilator heat exchanging device according to claim 5, characterized in that: The shape of the inner cavity (13) is circular, and the inside of the inner cavity (13) is annularly arrayed with spoiler plates (14).

7. The heat recovery fresh air ventilator heat exchanging device according to claim 6, characterized in that: The inner surface of the first air pipe (9) is annularly arrayed with capillary sub-pipes (16), and the outer side of the capillary sub-pipes (16) is closed.

8. The heat recovery fresh air ventilator heat exchanging device according to claim 7, characterized in that: The end of the inner cavity (13) is annularly arrayed with air inlet pipe openings (15), the air inlet pipe openings (15) and the capillary sub-pipes (16) in the inner surface of the first air pipe (9) are communicated, and the inside of the capillary sub-pipes (16) is spiral-shaped.

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