A heat center structure and whole-house fresh air replacement system

Abstract

The present invention discloses a heat center structure and a whole-house fresh air replacement system adopting the heat center structure, wherein the heat center structure comprises: a shell, comprising an air inlet chamber and a heat exchange chamber; a plurality of air inlets are arranged around the air inlet chamber, and a plurality of air outlets are arranged around the heat exchange chamber; a first damper is arranged on each of the air inlets; an outer rotor centrifugal fan is arranged in the heat exchange chamber, and an air suction port of the outer rotor centrifugal fan is connected to the air inlet chamber; an internal heat exchanger is arranged in the heat exchange chamber and arranged around the outer rotor centrifugal fan; the internal heat exchanger is also connected to an outdoor unit that provides heat exchange medium for it; the airflow entering the air inlet chamber from each of the air inlets is blown to the surrounding internal heat exchangers through the outer rotor centrifugal fan, and is discharged from each of the air outlets after passing through the internal heat exchanger for heat exchange.

Description

Technical Field

[0001] The invention relates to the technical field of air exchange system design, and in particular to a whole-house fresh air replacement system. Background Art

[0002] Existing buildings usually use household room air conditioners for air conditioning, which require a lot of on-site installation work and seriously affect the visual effects of the building's exterior facade and interior walls. The use of hidden household central air conditioners to replace single-unit household room air conditioners, with centralized outdoor units and hidden indoor units, has become a common pursuit of the air conditioning industry and owners.

[0003] The efforts to develop household central air conditioners have made great progress in recent years: the "small multi-split" system that uses one outdoor unit to simultaneously drive multiple indoor units through copper pipes, and the "water machine" that uses one outdoor unit to produce cold (hot) water and input it into the fan coil units in each room, promote each other and complement each other, and shine brightly in the household central air-conditioning market.

[0004] However, whether it is a small multi-split household central air conditioner or a water machine, both of them transport the cooling (heating) medium to each room, and realize the cooling (heating) of the room through the fan coil units in each room. Neither of them can solve the two long-standing problems of fresh air replacement and decentralized installation of indoor units in home HVAC.

[0005] 1. Fresh air replacement problem

[0006] In residential areas, the indoor air pollution is very serious due to the breathing and excretion of people and pets, the diffusion of gas and oil smoke during cooking, the volatilization of benzene and aldehyde components in various artificial materials, etc. Some real estate companies and owners try to use the method of arranging fan ducts, such as Figure 1 , forcing outdoor fresh air into the room and directing indoor dirty air to the outdoors, but these tortuous, dark and damp air-conditioning ducts used for fresh air replacement, as well as the decorative packaging interlayers that cover these ducts for visual effects, accumulate a large amount of dust that cannot be removed during operation, breeding a large number of bacteria and mold, and providing a breeding ground for rats, cockroaches, bedbugs, etc., bringing new and serious indoor health and hygiene problems; especially the air supply duct (fresh air duct), the inner wall of the duct often condenses and attaches dust to become a bacterial microbial culture medium, and the accumulated dust, microorganisms, bedbug and cockroach feces, etc., are blown into the indoor space with the fresh air, bringing new secondary pollution problems.

[0007] 2. Dispersion and centralization of indoor units

[0008] The indoor air-conditioning units (fan coils) in each room of a house are usually not far apart, and are even separated by only a wall. If the indoor units can be centralized and merged to form a "heat center structure" for the family while ensuring the actual cooling and heating needs of each room, it will be of great significance for saving materials, improving energy efficiency, and enhancing the beauty and utilization of indoor space. Whether it is a fluorine machine or a water machine for household central air conditioners, they all transport the cooling (heating) medium to each room, and they have not been able to solve the problem of merging and centralizing the indoor air-conditioning units in each room. Summary of the invention

[0009] The present invention provides a heat center structure, characterized by comprising:

[0010] The housing comprises an air inlet cavity and a heat exchange cavity; the air inlet cavity is provided with a plurality of air inlets around it, and the heat exchange cavity is provided with a plurality of air outlets around it; each of the air inlets is provided with a first damper;

[0011] An outer rotor centrifugal fan is arranged in the heat exchange chamber, and an air suction port of the outer rotor centrifugal fan is connected to the air inlet chamber;

[0012] An internal heat exchanger is disposed in the heat exchange cavity and arranged around the outer rotor centrifugal fan; the internal heat exchanger is also connected to an outdoor unit that provides heat exchange medium for it;

[0013] The airflow entering the air inlet cavity from each of the air inlets is blown to the surrounding internal heat exchangers through the outer rotor centrifugal fan, and is discharged from each of the air outlets after passing through the internal heat exchanger for heat exchange.

[0014] Preferably, a second air door is provided on the air outlet.

[0015] Preferably, the air inlet chamber is arranged above the heat exchange chamber, and a through hole communicating with the heat exchange chamber is arranged at the bottom of the air inlet chamber, and the air suction port of the outer rotor centrifugal fan is communicated with the through hole.

[0016] Preferably, the circulation unit comprises an external heat exchanger, a compressor, and a throttle valve, and the internal heat exchanger, the external heat exchanger, the throttle valve, and the compressor are cyclically connected to form a circulation channel for the circulation of heat exchange medium.

[0017] Due to the adoption of the above technical solution, the present invention has the following advantages and positive effects compared with the prior art:

[0018] In existing houses, whether it is a small multi-split household central air conditioner or a water machine, the cooling (heating) medium is transported to each room, and heat is exchanged with the air through the fan coil units in each room. The problem of merging and centralizing the indoor air conditioning units (fan coil units) in each room has not been solved.

[0019] The present invention centrally combines indoor air-conditioning units and sets up a family "heat center structure" under the ceiling at the intersection of various rooms in the house. This is of great significance for saving air-conditioning product materials, adopting frequency conversion technology, improving air-conditioning energy efficiency, reducing indoor noise, and improving the aesthetics of indoor space and space utilization.

[0020] The present invention also provides a whole-house fresh air replacement system, which is used for replacing fresh air in a house group, wherein the house group includes a plurality of rooms and passages connected to the rooms; the whole-house fresh air replacement system includes:

[0021] The heat center structure as described above is installed in the passage; and each of the rooms is connected to an air inlet and an air outlet respectively;

[0022] A main air inlet is arranged on the passage or one of the rooms and is connected to the outside, and the main air inlet is connected to the air inlet cavity through a main air inlet pipe; and a third air door is arranged on the main air inlet;

[0023] A main air outlet is arranged on the passage or on the outer wall of one of the rooms; a fourth air door is arranged on the main air outlet;

[0024] A branch air outlet is arranged on each of the rooms to realize the connection between each room and the passage, and each branch air outlet is provided with a fifth air door;

[0025] Control the opening of the first damper, the closing of the third damper, the closing of the fifth damper, and the starting of the internal heat exchanger to achieve internal circulation cooling or heating in each room; control the closing of the first damper, the opening of the third damper, the opening of the fifth damper, and the closing of the internal heat exchanger to achieve fresh air replacement in each room and passage.

[0026] Preferably, the heat center structure is arranged at the top of the channel, and each of the air inlets is connected to the top side of the channel in the room.

[0027] Preferably, the branch air outlet is arranged on a side of the room close to the ground.

[0028] Preferably, the branch air outlet is arranged on the door of the room, and is arranged on a side of the door close to the ground.

[0029] Preferably, the fifth damper comprises:

[0030] A sliding baffle, wherein a slide groove structure is provided on two opposite sides of the air outlet, and the sliding baffle is movably installed in the slide groove;

[0031] The pushing device is installed on the door and connected with the sliding baffle, and is used for pushing the sliding baffle to move along the sliding groove to realize the opening and closing of the branch air outlet or the adjustment of the air outlet size of the branch air outlet.

[0032] Preferably, the sliding baffle is in a rectangular shape matching the branch air outlet, and the four corners of the sliding baffle are rounded.

[0033] Preferably, the sliding baffle is a heat-insulating and sound-proof board.

[0034] Preferably, the main air inlet is also provided with a fresh air pre-processing module for filtering the fresh air.

[0035] Due to the adoption of the above technical solution, the present invention has the following advantages and positive effects compared with the prior art:

[0036] 1. Centralize and merge indoor air conditioning units

[0037] Whether it is a small multi-split household central air-conditioning unit or a water-based unit, the cooling (heating) medium is transported to each room, and heat is exchanged with the air through the fan coil units in each room. It cannot solve the problem of merging and centralizing the indoor air-conditioning units (fan coil units) in each room.

[0038] The present invention centrally combines indoor air-conditioning units and sets up a family "heat center structure" under the ceiling at the intersection of various rooms in the house. This is of great significance for saving air-conditioning product materials, adopting frequency conversion technology, improving air-conditioning energy efficiency, reducing indoor noise, and improving the aesthetics of indoor space and space utilization.

[0039] 2. The structure of the fresh air system is extremely simple, beautiful, clean and hygienic

[0040] The present invention sets a heat center structure under the ceiling at the intersection of each room in the residential suite, and uses the room that needs to replace fresh air as an air duct, thereby eliminating the complex air ducts used in the traditional residential fresh air system to solve the problem of air flow from the outdoor fan to each room, and the decorative packaging interlayer covering these air ducts for visual effects. The structure of the fresh air system of the present invention is extremely simple and beautiful;

[0041] The present invention not only saves a lot of duct materials and decorative interlayers covering the ducts, simplifies the installation process, but also solves the major problems of dust accumulation, bacteria breeding, rodent and cockroach disasters in traditional air-conditioning ducts and decorative interlayers, ensuring the cleanliness and hygiene of the room.

[0042] 3. Small ventilation blind area

[0043] The air outlet of the heat center structure of the present invention is far away from the outer wall vent of the room which is connected with the ambient air by the outer wall vent, and has a large height difference, which is conducive to the rotation and movement of the fresh air flow in the room, the ventilation blind area is small, and the fresh air replacement effect is good; for the room which is not connected with the ambient air by the outer wall vent, the air outlet speed of the corresponding air outlet on the polyhedron airflow conversion structure is large, the airflow rushes into the room with a higher dynamic pressure head and then flows back to the ventilation door at a low speed, which is conducive to the rotation and movement of the fresh air flow in the room, greatly reduces the ventilation blind area, and has a good fresh air replacement effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The above and other features and advantages of the present invention will be more clearly understood through the following detailed description in conjunction with the accompanying drawings, in which:

[0045] Figure 1 This is a schematic diagram of the ventilation system in the existing housing complex;

[0046] Figure 2 This is a schematic structural diagram of the heat center structure provided by the present invention in Example 1;

[0047] Figure 3 This is a schematic diagram of the principle of the heat center structure provided by the present invention in Example 1;

[0048] Figure 4 This is a schematic diagram of the operation principle of the whole-house air conditioning system of the whole-house fresh air replacement system provided by the present invention in Example 2;

[0049] Figure 5 This is a schematic diagram of the operation principle of the whole-house fresh air system of the whole-house fresh air replacement system provided by the present invention in Example 2;

[0050] Figure 6 is a schematic structural diagram of the fifth damper in Example 2;

[0051] Figure 7 This is a schematic diagram of the operation principle of the whole-house air conditioning system of the whole-house fresh air replacement system provided by the present invention in Example 3;

[0052] Figure 8 This is a schematic diagram of the operation principle of the whole-house fresh air replacement system of the whole-house provided by the present invention in Example 3. DETAILED DESCRIPTION

[0053] The present invention will be described in more detail below with reference to the accompanying drawings showing embodiments of the present invention. However, the present invention may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are set forth in order to achieve a full and complete disclosure and to enable those skilled in the art to fully understand the scope of the present invention. In these drawings, the sizes and relative sizes of layers and regions may be exaggerated for clarity.

[0054] Example 1

[0055] Reference Figure 2-3 The present invention provides a heat center structure, comprising a shell 1, an outer rotor centrifugal fan 2 and a plurality of internal heat exchangers 3; wherein the shell 1 comprises an air inlet chamber 103 and a heat exchange chamber 104; a plurality of air inlets 101 are arranged around the air inlet chamber 103, and a plurality of air outlets 102 are arranged around the heat exchange chamber; the outer rotor centrifugal fan 2 is arranged in the heat exchange chamber 104, and the air inlet of the outer rotor centrifugal fan 2 is connected to the air inlet chamber 103; a plurality of internal heat exchangers are arranged in the heat exchange chamber 104 and arranged around the outer rotor centrifugal fan 2; the internal heat exchanger 3 is also connected to a circulation unit for providing heat exchange medium therefor;

[0056] When in use, the heat center structure is placed in a group of houses, and each room is connected to an air inlet 101 and an air outlet 102; under the high-speed rotation of the outer rotor centrifugal fan, a negative pressure area and a positive pressure area are generated at its air inlet and air outlet respectively, and through the opening and closing operation of the air inlet door and the air outlet door on the side of the structure, an air flow closed-loop circulation is formed with the room that needs to be cooled (heated), and the air in the room is sent to the outer rotor centrifugal fan, and then sent to the internal heat exchanger after being pressurized by the outer rotor centrifugal fan for cooling and dehumidification (or heating and heating), and then sent back to the room, realizing all functions of the indoor unit of the household central air-conditioning unit, such as cooling, heating, and ventilation.

[0057] The air inlet 101 and the air outlet 102 are both arranged on the side walls around the shell, and the air inlet 101 and the air outlet 102 can be adjusted according to the number of rooms or specific needs, which is not limited here.

[0058] In this embodiment, the air inlet chamber 103 is arranged above the heat exchange chamber 104, and a through hole connected to the heat exchange chamber 104 is provided at the bottom thereof. The air intake port of the outer rotor centrifugal fan 2 located in the heat exchanger chamber 104 is connected to the through hole, so that the outer rotor centrifugal fan 2 draws air from the air inlet chamber 103 and blows it around the heat exchange chamber 104.

[0059] The heat center structure in this embodiment is a double-layer structure, and a fan is used to generate a negative pressure zone and a positive pressure zone; in order to reduce the height of the heat center structure to facilitate ceiling-mounted installation, the structure uses an outer rotor centrifugal fan with a motor embedded in the impeller; structural air inlets or air outlets are provided on each side of the structure, and the airflow in this embodiment enters from top to bottom, that is, the air enters the upper layer of the structure and exits from the lower layer; the structural air inlet is connected to the negative pressure zone, and the air outlet is connected to the positive pressure zone; each side of the structure can correspond to at least one room or fresh air inlet, and the air outlet on each side is the air inlet of the corresponding room.

[0060] In this embodiment, a first damper is provided on each air inlet 101, and a second damper is provided on each air outlet 102. The present invention realizes cooling or heating in each room by controlling the opening and closing of the first damper and the second damper.

[0061] In this embodiment, the circulation unit can adopt a water-cooled circulation unit or a heat pump circulation unit. There is no limitation here, as long as the group can provide heat exchange medium for the internal heat exchanger. Taking the circulation unit as a heat pump circulation unit as an example, the circulation unit includes an external heat exchanger, a compressor, and a throttle valve. The internal heat exchanger, the external heat exchanger, the throttle valve, and the compressor are cyclically connected to form a circulation channel for the circulation of heat exchange medium.

[0062] The heat center structure provided by the present invention has the following advantages:

[0063] In existing residences, whether it is a household central air conditioner or a water machine, the cooling (heating) medium is transported to each room, and heat is exchanged with the air through the fan coil units in each room. The problem of merging and centralizing the indoor air conditioning units (fan coil units) in each room has not been solved.

[0064] The present invention centrally combines indoor air-conditioning units and sets up a family "heat center structure" under the ceiling at the intersection of various rooms in the house. This is of great significance for saving air-conditioning product materials, adopting frequency conversion technology, improving air-conditioning energy efficiency, reducing indoor noise, and improving the aesthetics of indoor space and space utilization.

[0065] Example 2

[0066] The present invention provides a whole-house fresh air replacement system, which is used for replacing fresh air in a house group, wherein the house group includes multiple rooms 4 and passages 5 connected to each room 4; the whole-house fresh air replacement system includes a heat center structure 01, a total air inlet 7, a total air outlet 6 and branch air outlets; the heat center structure 01 adopts the heat center structure described in Example 1, and each room 4 is respectively connected to an air inlet 101 and an air outlet 102; the total air inlet 7 is arranged on the passage 5 or one of the rooms 4 and is connected to the outside world, and the total air inlet 7 is connected to the air inlet cavity of the heat center structure 01 through a total air inlet pipe 8; and a third air gate is arranged on the total air inlet 6; the total air outlet 6 is arranged on the passage or on the outer wall of one of the rooms, and a fourth air gate is arranged on the total air outlet; branch air outlets are arranged on each room to realize the connection between each room and the passage, and each branch air outlet is provided with a fifth air gate

[0067] Control the opening of the first damper, the closing of the third damper, the closing of the fifth damper, and the starting of the internal heat exchanger to realize internal circulation cooling or heating in each room, that is, to realize the operation of the whole-house air-conditioning system; control the closing of the first damper, the opening of the third damper, the opening of the fifth damper, and the closing of the internal heat exchanger to realize fresh air replacement in each room and passage, that is, to realize fresh air replacement in the whole house.

[0068] The whole-house fresh air replacement system provided by the present invention is applicable to various types of housing systems, such as residential houses, office buildings, hotels and other places, without limitation here.

[0069] The following is a specific explanation using the example of a residential building cluster.

[0070] In this embodiment, if Figure 4 As shown in the figure, the heat center structure 01 is set in the ceiling at the top of the channel 5. The air inlets and outlets of the heat center structure 01 are connected to each room through air ducts, and each room is matched with an air inlet and an air outlet. And the air inlets of the heat center structure 01 are connected to the top side of the channel room, so that the hot air / cold air / fresh air input into the room is input from the top of the room, which is convenient for diffusion.

[0071] In this embodiment, the total air inlet 7 is arranged on the outer wall at one end of the passage 5, and the total air outlet 6 is arranged on the outer wall in one of the rooms (living room). In this embodiment, the total air inlet 7 and the total air outlet 6 are arranged on the outer walls of the passage and the living room, mainly considering that these two rooms are generally in an open and connected state. Of course, in other embodiments, the total air inlet 7 and the total air outlet 6 can also be arranged in other rooms or other positions of the passage, which is not limited here.

[0072] In this embodiment, the branch air outlet is arranged on the side of each room close to the ground; the position on the room where the air inlet 101 is connected to the room is on the side of each room close to the roof, and is preferably also arranged away from the branch air outlet in the horizontal direction.

[0073] In traditional house fresh air systems, the fresh air inlet and dirty air outlet of the room are both set on the suspended ceiling under the ceiling. In the vertical direction, i.e., the height direction, the fresh air inlet and the dirty air outlet cannot be staggered. Since the speed of the fresh air added by the fresh air inlet is usually around 2m / s, the downward dynamic pressure head is very small, resulting in a part of the fresh air flow not sinking deeply to participate in the fresh air replacement, but finding the shortest distance and least resistance path between the positive pressure fresh air inlet and the negative pressure dirty air outlet, and going straight to the dirty air outlet along the lower surface of the suspended ceiling, causing a short circuit in the fresh air flow, wasting fresh air resources, and poor fresh air replacement effect.

[0074] In this embodiment, the branch air outlet is used as a node. After the fresh air enters the room at a high position, it performs a compound movement of vertical descent and lateral translation, squeezing and pushing the dirty air to flow to the branch air outlet and be discharged at a low position, thereby greatly reducing the ventilation blind spots inside the room, achieving high utilization rate of fresh air resources and good fresh air replacement effect.

[0075] In this embodiment, the branch air outlets are arranged on the doors of each room, so that the doors can be directly modified without opening an opening on the wall and destroying the original wall structure.

[0076] Further, such as Figure 6 As shown in , the fifth damper is arranged at the branch air outlet, and the fifth damper is an adjustable damper. Specifically, the adjustable damper includes a sliding baffle and a pushing device; the sliding baffle is a rectangle matching the branch air outlet, and a slide groove is arranged on two opposite sides of the branch air outlet, and the left and right sides of the sliding baffle are movably installed in the slide groove; the pushing device is installed on the door, and the driving end (driving rod) is connected to the sliding baffle, which is used to push the sliding baffle to move along the slide groove to realize the opening and closing of the branch air outlet 11 or the adjustment of the damper size of the branch air outlet.

[0077] In order to improve the flexibility of the sliding baffle in the slide groove, the present embodiment further arranges a driving rod for driving the sliding baffle to open and close on the geometric center line of the sliding baffle, and the driving rod and the sliding baffle are connected in a hinged manner, and the length of the upper edge of the door frame in the direction of movement of the driving rod is required to be greater than 1 / 2 of the length of the sliding baffle in the same direction, thereby improving the flexibility of the sliding baffle in the slide groove, fundamentally eliminating the lateral extrusion force of the sliding baffle on the groove caused by the eccentricity of the driving rod and the sliding resistance caused by the lateral extrusion force, thereby eliminating the risk of the sliding baffle being stuck in the slide groove and the sliding baffle damaging the slide groove;

[0078] In order to further eliminate the sliding resistance torque problem that the sliding baffle may encounter in the slide groove, the four corners of the sliding baffle are rounded during design and manufacture in this embodiment, thereby improving the sliding performance of the sliding baffle in the slide groove and fundamentally eliminating the sliding resistance torque of the door sheet caused by the square corners on the four corners of the sliding baffle possibly scratching or even piercing the slide groove body material;

[0079] Among them, in order to enhance the thermal insulation and sound insulation effect of the sliding baffle, the sliding baffle of this embodiment is a sheet-like rectangular cavity with a certain thickness, which is filled with thermal insulation material, so that when the sliding baffle is actually used, it can effectively block the transfer of heat and vibration noise on both sides of the damper during the closing period, and has good thermal insulation and sound insulation effects.

[0080] In this embodiment, a fresh air pre-processing module 5 for filtering and conditioning the fresh air is also provided on the main air inlet 7. The fresh air pre-processing module 5 can be a filter structure, etc., which is used to perform dust removal and other operations on the fresh air entering the house, and is also conducive to improving the fresh air pressure head.

[0081] In this embodiment, the first damper, the second damper, the third damper / the fourth damper may also be adjustable dampers like the fifth damper mentioned above, or dampers of other structures may be used, as long as they can achieve the effect of opening and closing the dampers, and there is no limitation here.

[0082] In this embodiment, the first damper, the second damper, the third damper, the fifth damper, the outer rotor centrifugal fan and the internal heat exchanger can all be started and shut down in a unified manner through the controller, and no limitation is made here.

[0083] The following is a further explanation of the working principle of the whole-house fresh air replacement system provided in this embodiment:

[0084] 1. Operation of the whole house air conditioning system

[0085] like Figure 5 As shown in , close the third damper, the fourth damper, and the fifth damper, that is, close the circulation between the entire house system and the outside world, start the internal heat exchanger, and open the first damper on the air inlet and the second damper on the air outlet corresponding to the room that needs to be heated up / cooled; the air in the room enters the air inlet cavity from the air inlet, then flows through the outer rotor centrifugal fan, is blown to each internal heat exchanger for heat exchange, and then is sent back to the room from the air outlet, thus forming a cycle.

[0086] 2. Operation of the whole house fresh air system

[0087] like Figure 6As shown in , opening the third and fourth air doors, that is, opening the circulation between the entire house system and the outside world, closing the first air door, that is, closing the air inlet of the heat center structure, to prevent the air in the room from flowing back to the heat center structure, and opening the second and fifth air doors in the room where fresh air is required;

[0088] The outside air enters the air inlet cavity of the heat center module from the third air door, passes through the internal heat exchanger under the action of the outer rotor centrifugal fan, and is sent into each room. In the room, the dirty air is squeezed and discharged into the passage from the fifth air door of each door, and then enters the room from the open door of the room with a main air outlet or the fifth air door on the door, and finally is discharged from the main air outlet of the room, thereby completing the fresh air replacement process of the entire house system.

[0089] The whole-house fresh air replacement system provided by the present invention has the following benefits:

[0090] 1. Centralize and merge indoor air conditioning units to form a "heat center structure" for the family

[0091] Whether it is a fluorine machine or a water machine for household central air conditioning, the cooling (heating) medium is transported to each room, and heat is exchanged with the air through the fan coil units in each room. It cannot solve the problem of merging and centralizing the indoor air conditioning units (fan coil units) in each room.

[0092] The present invention centrally combines indoor air-conditioning units and sets up a family "heat center structure" under the ceiling at the intersection of various rooms in the house. This is of great significance for saving air-conditioning product materials, adopting frequency conversion technology, improving air-conditioning energy efficiency, reducing indoor noise, and improving the aesthetics of indoor space and space utilization.

[0093] 2. The structure of the fresh air system is extremely simple, beautiful, clean and hygienic

[0094] The present invention sets a heat center structure under the ceiling at the intersection of each room in the residential suite, and uses the room that needs to replace fresh air as an air duct, thereby eliminating the complex air ducts used in the traditional residential fresh air system to solve the problem of air flow from the outdoor fan to each room, and the decorative packaging interlayer covering these air ducts for visual effects. The structure of the fresh air system of the present invention is extremely simple and beautiful;

[0095] The present invention not only saves a lot of duct materials and decorative interlayers covering the ducts, simplifies the installation process, but also solves the major problems of dust accumulation, bacteria breeding, rodent and cockroach disasters in traditional air-conditioning ducts and decorative interlayers, ensuring the cleanliness and hygiene of the room.

[0096] 3. Small ventilation blind area

[0097] The air outlet of the heat center structure of the present invention is far away from the outer wall vent of the room which is connected with the ambient air by the outer wall vent, and has a large height difference, which is conducive to the rotation and movement of the fresh air flow in the room, the ventilation blind area is small, and the fresh air replacement effect is good; for the room which is not connected with the ambient air by the outer wall vent, the air outlet speed of the corresponding air outlet on the polyhedron airflow conversion structure is large, the airflow rushes into the room with a higher dynamic pressure head and then flows back to the ventilation door at a low speed, which is conducive to the rotation and movement of the fresh air flow in the room, greatly reduces the ventilation blind area, and has a good fresh air replacement effect.

[0098] Example 3

[0099] Reference Figure 7-8 This embodiment is an adjustment based on embodiment 1.

[0100] In this embodiment, a case where the housing group is a public building (such as an office building, a hotel, etc.) is taken as an example for specific description.

[0101] In this embodiment, the house group includes a passage and a plurality of rooms distributed on both sides of the passage.

[0102] In this embodiment, the main air inlet is arranged on the outer wall of one of the rooms, and the main air outlet 4 is arranged on the outer wall at one end of the passage, directly at both ends of the passage.

[0103] The other structures of the whole-house fresh air replacement system in this embodiment can refer to the description in Example 1 and will not be repeated here.

[0104] Those skilled in the art will appreciate that the present invention can be implemented in many other specific forms without departing from its own spirit or scope. Although the implementation of the present invention has been described, it should be understood that the present invention should not be limited to these embodiments, and those skilled in the art can make changes and modifications within the spirit and scope of the present invention as defined by the appended claims.

Claims

1. A whole-house fresh air replacement air conditioning system, used for replacing fresh air in a house group, wherein the house group includes a plurality of rooms and passages connected to the rooms; characterized in that: The whole-house fresh air replacement system comprises: A heat center structure is installed in the channel; wherein the heat center structure comprises: a shell, including an air inlet chamber and a heat exchange chamber; a plurality of air inlets are arranged around the air inlet chamber, and a plurality of air outlets are arranged around the heat exchange chamber; a first damper is arranged on each of the air inlets; an outer rotor centrifugal fan is arranged in the heat exchange chamber, and an air suction port of the outer rotor centrifugal fan is connected to the air inlet chamber; an internal heat exchanger is arranged in the heat exchange chamber and arranged around the outer rotor centrifugal fan; the internal heat exchanger is also connected to a circulation unit for providing heat exchange medium therefor; the airflow entering the air inlet chamber from each of the air inlets passes through the outer rotor centrifugal fan and is blown to the surrounding internal heat exchangers, and is discharged from each of the air outlets after passing through the internal heat exchanger for heat exchange; and each of the rooms is respectively connected to an air inlet and an air outlet; A main air inlet is arranged on the passage or one of the rooms and is connected to the outside, the main air inlet is connected to the air inlet cavity of the heat center structure through a main air inlet pipe; and a third air door is arranged on the main air inlet; A main air outlet is arranged on the passage or on the outer wall of one of the rooms; a fourth air door is arranged on the main air outlet; A branch air outlet is arranged on each of the rooms to realize the connection between each room and the passage, and each branch air outlet is provided with a fifth air door; Control the opening of the first damper, the closing of the third damper, the closing of the fifth damper, and the starting of the internal heat exchanger to achieve internal circulation cooling or heating in each room; control the closing of the first damper, the opening of the third damper, the opening of the fifth damper, and the closing of the internal heat exchanger to achieve fresh air replacement in each room and passage.

2. The whole-house fresh air replacement air conditioning system according to claim 1, characterized in that: The heat center structure is arranged at the top of the channel, and each of the air inlets is connected to the top side of the channel in the room.

3. The whole-house fresh air replacement air conditioning system according to claim 1 or 2, characterized in that: The branch air outlet is arranged on a side of the room close to the ground.

4. The whole-house fresh air replacement air conditioning system according to claim 1, characterized in that: The branch air outlet is arranged on the door of the room, and is arranged on a side of the door close to the ground.

5. The whole-house fresh air replacement air conditioning system according to claim 4, characterized in that: The fifth damper comprises: A sliding baffle, wherein a slide groove structure is provided on two opposite sides of the air outlet, and the sliding baffle is movably installed in the slide groove; The pushing device is installed on the door and connected with the sliding baffle, and is used for pushing the sliding baffle to move along the sliding groove to realize the opening and closing of the branch air outlet or the adjustment of the air outlet size of the branch air outlet.

6. The whole-house fresh air replacement air conditioning system according to claim 5, characterized in that: The sliding baffle is in a rectangular shape matching the branch air outlet, and the four corners of the sliding baffle are rounded.

7. The whole-house fresh air replacement air conditioning system according to claim 5, characterized in that: The sliding baffle is a heat-insulating and sound-insulating board.

8. The whole-house fresh air replacement air conditioning system according to claim 1, characterized in that: The main air inlet is also provided with a fresh air pre-processing module for filtering the fresh air.

9. The whole-house fresh air replacement air conditioning system according to claim 1, characterized in that: The air outlet is provided with a second air door.

10. The whole-house fresh air replacement air conditioning system according to claim 1, characterized in that: The air inlet chamber is arranged above the heat exchange chamber, and a through hole communicating with the heat exchange chamber is arranged at the bottom of the air inlet chamber, and the air suction port of the outer rotor centrifugal fan is communicated with the through hole.

11. The whole-house fresh air replacement air conditioning system according to claim 1, characterized in that: The circulation unit comprises an external heat exchanger, a compressor, and a throttle valve. The internal heat exchanger, the external heat exchanger, the throttle valve, and the compressor are cyclically connected to form a circulation channel for the circulation of heat exchange medium.

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