Multi-layer cage poultry house

Abstract

The present invention relates to the field of animal husbandry breeding technology, specifically a multi-layer caged poultry house, comprising a poultry house main body, cages, a ventilation system and a temperature control system; the poultry house main body comprises a first wall and a top cover, a first partition is arranged on the upper part or the upper end of the first wall, and the first partition divides the internal space of the poultry house main body into a breeding area located below and a fresh air pretreatment area located above; the cage is arranged in the breeding area, and the cage is a multi-layer structure; the ventilation system comprises an air intake component, a ventilation component and an exhaust component, the air intake component is located on both sides of the poultry house main body, and the exhaust component is located at the tail end of the poultry house main body. The present invention separates a fresh air pretreatment area from the space in the poultry house main body, which is used for temporary storage and equal pressure distribution of fresh air, and cooperates with the ventilation components arranged vertically between the cages to realize accurate air supply to the cages in the poultry house, so that fresh air is directly delivered to the cages, and is suitable for multi-layer cage breeding of poultry.

Description

Technical Field

[0001] The invention relates to the technical field of animal husbandry, in particular to a multi-layer cage poultry house. Background Art

[0002] Multi-layer cage farming technology evolved from flat farming. In the field of poultry farming, multi-layer cage farming has the advantages of high breeding density, small footprint, and excellent production efficiency. The innovation of breeding methods has led to the adjustment of supporting cages, feeding equipment, etc., and the current supporting equipment has become more complete.

[0003] Compared with flat cage farming, the focus of multi-layer cage farming is mainly on how to reasonably control the ventilation and temperature and humidity regulation in the house. The current research direction of multi-layer cage farming of poultry focuses on the ventilation methods of poultry houses. There are currently two ventilation methods for livestock and poultry houses:

[0004] First, a horizontally arranged ventilation system: For example, the patent document with publication number CN104756896 records a closed livestock and poultry house ventilation system that prevents cross infection. The system has an air supply system installed on the top of the livestock and poultry house, and a return air system installed on the lower part of the walls on both sides of the livestock and poultry house. The air flow direction is controlled by opening air holes in different directions on the branch air supply duct to prevent cross infection of pathogens in the vertical and horizontal directions of the livestock and poultry house. Patent documents with publication number CN110050702A and announcement number CN215223780U have similar design ideas.

[0005] Second, a vertically arranged ventilation system: For example, a pig house with good vertical ventilation effect with announcement number CN212232585U includes a pig house body, a corridor, and several single houses. A main air intake channel is provided under the corridor, and at least one ventilation pipe is vertically provided at the end of each single house. The air in the house is directly discharged out of the house through the manure trough by the fan, and the harmful gas in the manure trough is not easily spread to the pig activity area.

[0006] Although the two ventilation design schemes mentioned above can control the direction of gas flow to a certain extent, when applied to multi-layer cages for poultry, it is impossible to ensure accurate air intake for each cage unit. There is an unbalanced air supply problem with large air volume and low temperature on the upper layer and small air volume and high temperature on the lower layer.

[0007] In particular, as poultry farming gradually develops towards higher density and more layers, the development of a ventilation method that adapts to the needs of multi-layer intensive poultry farming has become an urgent problem to be solved. Summary of the invention

[0008] The object of the present invention is to provide a multi-layer cage poultry house to solve the problems raised in the above background technology.

[0009] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a multi-layer cage poultry house, comprising a poultry house main body, cages, a ventilation system and a temperature control system;

[0010] The poultry house body comprises a first wall located on the ground and a top cover located at the upper end of the first wall, a first partition is provided on the upper part or the upper end of the first wall, and the first partition divides the internal space of the poultry house body into a breeding area located below and a fresh air pretreatment area located above;

[0011] The cage is arranged in the breeding area, and the cage is a multi-layer structure;

[0012] The ventilation system comprises an air inlet assembly for introducing air from the outside of the poultry house main body into the fresh air pretreatment area, a ventilation assembly for introducing air from the fresh air pretreatment area into the breeding area, and an exhaust assembly for leading air from the breeding area out of the outside of the poultry house main body, the air inlet assembly is located on both sides of the poultry house main body, and the exhaust assembly is located at the rear end of the poultry house main body;

[0013] The temperature control system includes a first wet curtain and a first air hole, wherein the first wet curtain is located outside the first air hole, and the first air hole is located at the front end of the poultry house body and is arranged opposite to the exhaust assembly.

[0014] Furthermore, a first flap is arranged on the inner side of the first air hole, the lower end of the first flap is rotatably connected to the first wall, and a first flip angle adjustment component is arranged between the upper end of the first flap and the first wall.

[0015] Furthermore, a first assembly plate and a second assembly plate are arranged in the fresh air pretreatment area, the first assembly plate is located on the outside of the second assembly plate, and a plurality of second air holes are arranged on the first assembly plate; the air inlet assembly includes a plurality of air supply fans located on the second assembly plate and a plurality of second wet curtains located on the first wall, the positions of the air supply fans and the second wet curtains correspond to the second air holes, the air supply fans and the second wet curtains are respectively located on the inner and outer sides of the second air holes, the ventilation assembly includes a plurality of vertically arranged ventilation pipes, the upper ends of the ventilation pipes penetrate through the first partition and extend into the fresh air pretreatment area, the upper ends of the ventilation pipes are open and the lower ends are closed, air outlet holes are arranged on the part of the ventilation pipes located in the breeding area, and the exhaust assembly includes a plurality of exhaust fans arranged on the first wall.

[0016] Furthermore, a second flap is arranged inside the second air hole, the lower end of the second flap is rotatably connected to the first assembly plate, and a second flip angle adjustment component is arranged between the upper end of the second flap and the first assembly plate.

[0017] Furthermore, second walls are respectively arranged on both sides of the main body of the poultry house, the upper end of the second wall is connected to the top cover, a second partition is arranged between the first wall and the second wall, an equipment installation compartment is arranged above the second partition, and a corridor is arranged below the second partition, a third assembly plate is arranged in the equipment installation compartment, and a plurality of second air holes are arranged on the third assembly plate; the air inlet component includes a plurality of air supply fans located on the first wall and a plurality of second wet curtains located on the second wall, the positions of the air supply fans and the second wet curtains correspond to the second air holes, the air supply fans and the second wet curtains are respectively arranged on the inner and outer sides of the second air holes, the ventilation component includes a plurality of vertically arranged ventilation pipes, the upper ends of the ventilation pipes penetrate the first partition and extend into the fresh air pretreatment area, the upper ends of the ventilation pipes are open and the lower ends are closed, air outlet holes are arranged on the part of the ventilation pipes located in the breeding area, and the exhaust component includes a plurality of exhaust fans arranged on the first wall.

[0018] Furthermore, a second flap is arranged inside the second air hole, the lower end of the second flap is rotatably connected to the third assembly plate, and a second flip angle adjustment component is arranged between the upper end of the second flap and the third assembly plate.

[0019] Furthermore, the plurality of air supply fans located on the same side of the poultry house main body are arranged at intervals, and the air supply fans located on both sides of the poultry house main body are arranged in a staggered manner.

[0020] Furthermore, the air outlet holes on the ventilation duct are arranged in multiple rows, each row has multiple air outlet holes, the multiple air outlet holes in each row are distributed in a fan shape, and the apertures of the air outlet holes increase sequentially in a top-down direction.

[0021] Furthermore, the ventilation assembly also includes an air volume control valve arranged at the upper end of the ventilation pipe.

[0022] Furthermore, it also includes a heat recovery system, which includes an equipment housing and a third partition arranged in the equipment housing, the third partition divides the internal space of the equipment housing into a fresh air channel and an exhaust gas channel, a fresh air fan is arranged in the fresh air channel, the air inlet of the fresh air channel is connected to the outside, the exhaust outlet of the fresh air channel is connected to the fresh air pretreatment area, the exhaust gas fan is arranged in the exhaust gas channel, the air inlet of the exhaust gas channel is connected to the breeding area of ​​the poultry house main body, and the exhaust outlet of the exhaust gas channel is connected to the outside, a heat exchange core is arranged on the third partition, one end of the heat exchange core is located in the fresh air channel, and the other end is located in the exhaust gas channel.

[0023] Furthermore, a preheater and a humidifying sprayer are also provided in the fresh air pretreatment area.

[0024] Furthermore, the poultry house body is provided with an entrance and exit for personnel and an entrance and exit for vehicles.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. The multi-layer cage poultry house disclosed in the present invention is divided into a fresh air pretreatment area located at the top and a breeding area located at the bottom by setting a first partition, and its advantages are:

[0027] First, the air inlet assembly introduces the air outside the main body of the poultry house into the fresh air pretreatment area for temporary storage. The fresh air pretreatment area is equivalent to a static pressure box, so that the air volume entering each ventilation duct remains consistent;

[0028] In addition, a temperature and humidity control mechanism can be added in the fresh air pretreatment area to provide the prerequisite for precise control of temperature and humidity of the air entering the breeding area.

[0029] 2. In the multi-layer cage poultry house disclosed by the present invention, the vertically arranged ventilation pipes are used to accurately deliver fresh air to different layers of the cages, and the fan-shaped air outlets can cover each area of ​​the cages in a large area, providing fresh air for the poultry in the cages. The fresh air is directly delivered into the cages, with a higher utilization rate, which can solve the difficulties in controlling the multi-layer cage environment and improve ventilation efficiency;

[0030] In particular, in order to achieve consistency in the air intake volume of each layer of cages, the apertures of the air outlets on the ventilation ducts increase in sequence from top to bottom, so that the air volume of each air outlet is almost the same, achieving non-discriminatory air supply in multiple layers of cages and ensuring consistency in air quality and temperature in all areas of the poultry house.

[0031] 3. For multi-layer cage breeding, the breeding volume in a unit poultry house reaches tens of thousands of birds. How to prevent disease transmission is also a key point to be considered in the process of building a poultry house. In the multi-layer cage poultry house disclosed by the present invention, fresh air directly enters the cage feeding position from the fresh air pretreatment area to avoid mixing with exhaust gas from other areas in the house, thereby safeguarding biosafety. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a front view of the multi-layer cage poultry house in Example 1;

[0033] Figure 2 for Figure 1 Left view of

[0034] Figure 3 for Figure 1 Right view of;

[0035] Figure 4 for Figure 1 Section view along AA direction;

[0036] Figure 5 for Figure 1 Sectional view along BB direction;

[0037] Figure 6 for Figure 5 The enlarged view of the mark F in the middle;

[0038] Figure 7 for Figure 1 Cross-sectional view along CC direction;

[0039] Figure 8 for Figure 1 Section along DD direction;

[0040] Fig. 9 for Figure 2 Cross-section along the EE direction;

[0041] Fig.10 This is a schematic diagram of the structure of the ventilation pipe of Example 1;

[0042] Fig.11 This is a positional relationship diagram of the ventilation pipe and the cage in Example 1, where the arrows indicate the direction of airflow;

[0043] Fig.12 It is a three-dimensional diagram of the heat recovery system of Example 1;

[0044] Fig.13 It is a partial diagram of the heat recovery system of Example 1;

[0045] Fig.14 This is a cross-sectional view of the multi-layer cage poultry house of Example 2.

[0046] Description of main component symbols:

[0047] 11-first wall, 12-top cover, 13-first partition, 14-preheater, 15-humidifying sprayer, 16-second wall, 17-second partition, 18-third assembly plate, 20-cage, 21-automatic feeding system, 31-first assembly plate, 32-second assembly plate, 33-second air hole, 34-second flap, 35-air supply fan, 36-second wet curtain, 37-ventilation pipe, 371-air volume control valve, 38-air outlet, 39-exhaust fan, 41-first wet curtain, 42-first air hole, 43-first flap, 50-heat recovery system, 51-equipment housing, 52-third partition, 53-fresh air channel, 54-exhaust air channel, 55-fresh air fan, 56-exhaust fan, 57-heat exchange core, 58-T-type air duct. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0049] See also Figures 1 to 13 The present invention provides a multi-layer cage poultry house, including a poultry house main body, cages, a ventilation system, a temperature control system and a heat recovery system 50.

[0050] The main body of the poultry house includes a first wall 11 located on the ground and a top cover 12 located at the upper end of the first wall 11. A first partition 13 is arranged on the upper part of the first wall 11. The first partition 13 divides the internal space of the main body of the poultry house into a breeding area located below and a fresh air pretreatment area located above. In this embodiment: the span of the first walls on both sides is 100 meters, the span of the first walls at the front and rear ends is 23 meters, the height of the first wall is 6.5 meters, and the ceiling is 4.5 meters from the ground. A preheater 14 and a humidifying sprayer 15 are also arranged in the fresh air pretreatment area. The main body of the poultry house is provided with a personnel entrance and a vehicle entrance. The top cover 12 is a herringbone shape. The first partition 13 is divided into a first horizontal part, a second horizontal part and an inclined part in the direction from the front end to the rear end of the main body of the poultry house. The position of the first horizontal part is higher than the second horizontal part, the position of the rear end of the inclined part is higher than the front end, and the front end of the top cover 12 is also higher than the middle part and the rear end.

[0051] The cages 20 are arranged in the breeding area. In this embodiment, there are twelve groups of cages 20, each group of cages adopts a four-layer structure design, and the maximum breeding capacity is 72,000 chickens (for example, broilers). Every two groups form a row, and there are six rows in total. Each row of cages is equipped with an automatic feeding system 21 and an automatic watering system to realize automatic feeding.

[0052] The ventilation system includes an air inlet assembly for introducing air from the outside of the poultry house into the fresh air pretreatment area, a ventilation assembly for introducing air from the fresh air pretreatment area into the breeding area, and an exhaust assembly for leading air from the breeding area out of the outside of the poultry house. The air inlet assembly is located on both sides of the poultry house body, and the exhaust assembly is located at the rear end of the poultry house body. Specifically:

[0053] A first assembly plate 31 and a second assembly plate 32 are arranged in the fresh air pretreatment area, the first assembly plate 31 is located on the outer side of the second assembly plate 32, a plurality of second air holes 33 are arranged on the first assembly plate 31, a second flap 34 is arranged on the inner side of the second air hole 33, the lower end of the second flap 34 is rotatably connected to the first assembly plate 31, and a second flip angle adjustment component is arranged between the upper end of the second flap 34 and the first assembly plate 31; the air inlet assembly includes a plurality of air supply fans 35 located on the second assembly plate 32 and a plurality of second wet curtains 36 located on the first wall 11, the positions of the air supply fans 35 and the second wet curtains 36 correspond to the second air holes 33, the air supply fans 35 and the second wet curtains 36 are respectively located on the inner and outer sides of the second air holes 33, the plurality of air supply fans 35 located on the same side of the poultry house main body are arranged at intervals, and the air supply fans 35 located on both sides of the poultry house main body are arranged in a staggered manner.

[0054] The ventilation assembly includes a plurality of ventilation pipes 37 arranged vertically, and the ventilation pipe 37 is located between two groups of cages 20 in the same row. The upper end of the ventilation pipe 37 penetrates the first partition 13 and then extends into the fresh air pretreatment area. The upper end of the ventilation pipe 37 is open and the lower end is closed. The part of the ventilation pipe 37 located in the breeding area is provided with air outlets 38. There are eight rows of air outlets 38 on the same ventilation pipe 37, and the number of air outlets 38 in each row is multiple, and the multiple air outlets 38 in each row are distributed in a fan shape. An air volume control valve 371 is provided at the upper end of the ventilation pipe 37, and the air volume control valve 371 is used to control the air volume of the ventilation pipe 37. The fresh air in the fresh air pretreatment area is accurately delivered to the cages 20 on both sides by the ventilation pipe.

[0055] The exhaust assembly includes a plurality of exhaust fans 39 arranged on the first wall 11 .

[0056] The temperature control system includes a first wet curtain 41 and a first air hole 42. The first wet curtain 41 is located outside the first air hole 42. The first air hole 42 is located at the front end of the poultry house body and is arranged opposite to the exhaust fan 39. A first flap 43 is arranged inside the first air hole 42. The lower end of the first flap 43 is rotatably connected to the first wall 11, and a first flip angle adjustment component is arranged between the upper end of the first flap 43 and the first wall 11. In this embodiment, the water of the first wet curtain 41 is supplied by a water tower or a pool constructed below the first wet curtain 41.

[0057] It should be pointed out that, as a preferred solution of this embodiment, the position of the first air hole 42 corresponds to the channel between the two rows of cages 20. When the flowing air entering from the first air hole 42 flows through the channel between the two rows of cages 20, the fresh air blown in by the ventilation pipe 37 passes through the cage and then follows the flowing air in the channel to be discharged to the rear end of the poultry house, and is discharged by the exhaust fan 39. This structural design is suitable for use in the season of poultry disease epidemics. Each breeding position in the cage adopts independent air supply and exhaust, which effectively reduces the risk of mutual infection and cross infection among tens of thousands of poultry in the poultry house, and is of great significance in maintaining biosafety.

[0058] The heat recovery system 50 includes an equipment housing 51 and a third partition 52 arranged in the equipment housing 51. The third partition 52 divides the internal space of the equipment housing 51 into a fresh air channel 53 and an exhaust gas channel 54. A fresh air fan 55 is arranged in the fresh air channel 53. The air inlet of the fresh air channel 53 is connected to the outside, and the air outlet of the fresh air channel 53 is connected to the fresh air pretreatment area. Specifically: a T-shaped air duct 58 arranged in a horizontal direction is installed in the fresh air pretreatment area, and a plurality of exhaust holes are arranged on the T-shaped air duct 58. The hot air blown out of the fresh air channel 53 is sent to different positions of the fresh air pretreatment area after heat exchange through the T-shaped air duct 58. An exhaust fan 56 is arranged in the exhaust gas duct 54, the air inlet of the exhaust gas duct 54 is connected to the breeding area of ​​the poultry house main body, and the exhaust outlet of the exhaust gas duct 54 is connected to the outside. A heat exchange core 57 is arranged on the third partition plate 52, one end of the heat exchange core 57 is located in the fresh air duct 53, and the other end is located in the exhaust gas duct 54.

[0059] In summer, under the pumping of the exhaust fan 39, outdoor air enters the main body of the poultry house through the first wet curtain 41 and the first air hole 42. To cool the air entering the main body of the poultry house, the lower end of the first flap 43 is rotatably connected to the first wall 11, and the incoming air can be directed to the position of the first partition 13 to prevent the air from blowing directly on the cage. In winter, the first flap 43 is closed, and the heat recovery system 50 and the preheater 14 are turned on to heat the air in the fresh air pretreatment area.

[0060] It should be pointed out that the first flip angle adjustment component and the second flip angle adjustment component in the present embodiment adopt a pulling rope, and the flip angle of the first flap and / or the second flap is adjusted by adjusting the length of the pulling rope. An electric winch can also be equipped to control the operation of the electric winch by remote control to automatically adjust the length of the pulling rope. Example

[0061] The structure of this embodiment is basically the same as that of embodiment 1, except that: Fig.14As shown, a second wall 16 is provided on both sides of the main body of the poultry house, and the upper end of the second wall 16 is connected to the top cover 12. A second partition 17 is provided between the first wall 11 and the second wall 16. The upper part of the second partition 17 is an equipment installation compartment, and the lower part is a corridor. A third wet curtain 161 is provided on the second wall 16, and a third air hole 111 corresponding to the third wet curtain 161 is provided on the first wall 11. A third flap 112 is provided on the inner side of the third air hole 111, so as to realize ventilation and cooling of the side of the main body of the poultry house. In this embodiment, corridors are added on both sides of the main body of the poultry house to provide a resting place, a changing room or a disinfection room for employees.

[0062] In addition, compared with the first embodiment, the number of cages 20 in this embodiment is different, and the arrangement position of the ventilation system is different, as follows:

[0063] The cages 20 in this embodiment are eight groups, two groups form one row, and four rows in total. Each group of cages 20 adopts a four-layer structure design, and the maximum breeding capacity is 41,600 chickens (taking broilers as an example);

[0064] In the ventilation system of this embodiment, a third assembly plate 18 is arranged in the equipment installation compartment, a plurality of second air holes 33 are arranged on the third assembly plate 18, a second flap 34 is arranged inside the second air hole 33, the lower end of the second flap 34 is rotatably connected to the third assembly plate 18, and a second flip angle adjustment component is arranged between the upper end of the second flap 34 and the third assembly plate 18; the air inlet component includes a plurality of air supply fans 35 located on the first wall 11 and a plurality of second wet curtains 36 located on the second wall 16, the positions of the air supply fans 35 and the second wet curtains 36 correspond to the second air holes 33, the air supply fans 35 and the second wet curtains 36 are respectively located on the inner and outer sides of the second air holes 33, the plurality of air supply fans 35 located on the same side of the poultry house main body are arranged at intervals, and the air supply fans 35 located on both sides of the poultry house main body are staggered; the structural design of the ventilation component and the exhaust component is consistent with that of Example 1.

[0065] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Multi-layer cage poultry house, characterized by: Including the main body of the poultry house, cages, ventilation system and temperature control system; The poultry house body comprises a first wall located on the ground and a top cover located at the upper end of the first wall, a first partition is provided on the upper part or the upper end of the first wall, and the first partition divides the internal space of the poultry house body into a breeding area located below and a fresh air pretreatment area located above; The cage is arranged in the breeding area, and the cage is a multi-layer structure; The ventilation system comprises an air inlet assembly for introducing air from the outside of the poultry house main body into the fresh air pretreatment area, a ventilation assembly for introducing air from the fresh air pretreatment area into the breeding area, and an exhaust assembly for leading air from the breeding area out of the outside of the poultry house main body, the air inlet assembly is located on both sides of the poultry house main body, and the exhaust assembly is located at the rear end of the poultry house main body; The temperature control system comprises a first wet curtain and a first air hole, wherein the first wet curtain is located outside the first air hole, and the first air hole is located at the front end of the poultry house body and arranged opposite to the exhaust assembly; A first flap is disposed on the inner side of the first air hole, the lower end of the first flap is rotatably connected to the first wall, and a first flip angle adjustment component is disposed between the upper end of the first flap and the first wall; A first assembly plate and a second assembly plate are arranged in the fresh air pretreatment area, the first assembly plate is located on the outside of the second assembly plate, and a plurality of second air holes are arranged on the first assembly plate; the air inlet assembly includes a plurality of air supply fans located on the second assembly plate and a plurality of second wet curtains located on the first wall, the positions of the air supply fans and the second wet curtains correspond to the second air holes, the air supply fans and the second wet curtains are respectively located on the inner and outer sides of the second air holes, the ventilation assembly includes a plurality of vertically arranged ventilation pipes, the upper ends of the ventilation pipes penetrate the first partition plate and extend into the fresh air pretreatment area, the upper ends of the ventilation pipes are open and the lower ends are closed, the portion of the ventilation pipes located in the breeding area is provided with air outlet holes, and the exhaust assembly includes a plurality of exhaust fans arranged on the first wall; A second flap is disposed inside the second air hole, the lower end of the second flap is rotatably connected to the first assembly plate, and a second flip angle adjustment component is disposed between the upper end of the second flap and the first assembly plate; Multiple air supply fans located on the same side of the main body of the poultry house are arranged at intervals, and the air supply fans located on both sides of the main body of the poultry house are arranged in staggered positions; The air outlet holes on the ventilation duct are arranged in multiple rows, each row has multiple air outlet holes, the multiple air outlet holes in each row are distributed in a fan shape, and the apertures of the air outlet holes increase sequentially from top to bottom; The ventilation assembly also includes an air volume control valve disposed at the upper end of the ventilation pipe; It also includes a heat recovery system, which includes an equipment housing and a third partition arranged in the equipment housing, the third partition divides the internal space of the equipment housing into a fresh air channel and an exhaust gas channel, a fresh air fan is arranged in the fresh air channel, the air inlet of the fresh air channel is connected to the outside, the exhaust outlet of the fresh air channel is connected to the fresh air pretreatment area, the exhaust gas fan is arranged in the exhaust gas channel, the air inlet of the exhaust gas channel is connected to the breeding area of ​​the poultry house main body, and the exhaust outlet of the exhaust gas channel is connected to the outside, a heat exchange core is arranged on the third partition, one end of the heat exchange core is located in the fresh air channel, and the other end is located in the exhaust gas channel.

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