CN114738889A - Combined fresh air module - Google Patents
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- CN114738889A CN114738889A CN202210416614.2A CN202210416614A CN114738889A CN 114738889 A CN114738889 A CN 114738889A CN 202210416614 A CN202210416614 A CN 202210416614A CN 114738889 A CN114738889 A CN 114738889A
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/003—Ventilation in combination with air cleaning
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0035—Indoor units, e.g. fan coil units characterised by introduction of outside air to the room
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/02—Ducting arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/28—Arrangement or mounting of filters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
- F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
- F24F2013/247—Active noise-suppression
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
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- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Ventilation (AREA)
Abstract
The invention provides a combined fresh air module which comprises a front air inlet device, a header and a room fan coil which are sequentially connected, wherein an air channel is arranged in the header and is communicated with the front air inlet device and the room fan coil; an air inlet fan is arranged in the front air inlet device; when the outdoor fresh air is in operation, the outdoor fresh air is boosted by the air inlet fan and then sent into the header, and the outdoor fresh air is decelerated in an air channel of the header to reduce noise and eliminate vortex and is sent into a room by the room fan coil.
Description
Technical Field
The invention belongs to the technical field of fresh air systems, and particularly relates to a combined fresh air module.
Background
Most of our life lives in the residence, essentially in the indoor secondary air environment enclosed by the walls and the floor of the residence; carbon dioxide and excrement generated by human body metabolism, oil smoke and water vapor discharged from cooking and bathing, benzene and formaldehyde volatilized from interior decoration materials and the like cause indoor air to be polluted. Fresh air outside the house is introduced into the house and indoor dirty air is synchronously exhausted, so that bidirectional flow fresh air replacement of the house is realized, and the house is an intrinsic meaning of household life.
By adopting the deep fusion technology of the fresh air conditioner and the residential building, the energy consumption of the building is reduced while the environmental indexes of secondary air such as fresh air, cleanliness and temperature and humidity in the residence are improved by implementing the replacement and air conditioning of the fresh air of the residence, the influence of the residence on the external energy environment is reduced, and the practical carbon reaches the peak carbon neutralization, which is more the natural place of the human family life!
However, there is a long distance in the current state of the art from the above-mentioned "connotation" of fresh air replacement and carbon peak-to-peak carbon neutralization practices.
The indexes of freshness, cleanliness, temperature and humidity and the like of the secondary air environment in the house are improved, and the basic measures are fresh air replacement and air temperature and humidity adjustment.
In the design and construction process of a house, the inner wall, the outer wall and the doors and windows divide the originally spacious and open complete house space into functional space units such as a living room, a bedroom, a study, a kitchen, a toilet and a storage room, and the functional space units are difficult to achieve natural ventilation with the outdoor environment and even difficult to operate even with forced ventilation.
As shown in fig. 1, in a 135 square meter, four-room, two-toilet and excellent house design works house, all barriers such as bed and bedding, cabinets, sofas, tables and chairs are removed, and fresh air still penetrates through at least 4 walls after penetrating through the north and south.
During fresh air replacement, fresh air flow is blocked by multiple walls and multiple obstacles in a house, and fresh air filtration and heat exchange are required to achieve the aims of air freshness, cleanliness and temperature and humidity, so that in the process of bidirectional flow of house ventilation including fresh air feeding and dirty air discharging, a fan is required to pressurize the fresh air flow for multiple times to push air flow conveying.
The fresh air system is arranged in working and living places, and is used for implementing fresh air pressurization feeding, dirty air negative pressure collection, pressure boosting and discharging, fresh air pretreatment and external exhaust dirty air energy recovery, so that the fresh air system is widely accepted by the fresh air conditioning industry.
Since the spring of 2020, developers assemble a simple 'fresh air system' on a new building, compared with the residential air supply and exhaust two-in-one module machine and a bidirectional flow air supply and exhaust system driven by the same shown in the previous figures, the simple 'fresh air system' is greatly simplified, the simple 'fresh air system' mainly comprises an air supply fan module and PVC air supply pipelines on a suspended ceiling for communicating all rooms, and the simple 'fresh air system' is a blind-intestine type unidirectional flow and does not have the actual effect of 'bidirectional flow' of fresh air pressurized feeding and dirty air negative pressure collection, boosting and exhaust synchronous operation; because the processing precision of present door and window is very high, the gas tightness is very good, does not have room door and window to open the cooperation dirty wind just can not go out, and the new trend just also can not advance.
The current blind intestine type unidirectional flow fresh air system has serious technical problems:
firstly, the system violates the basic principle of 'bidirectional flow' of ventilation, discharges dirty air by relying on accidental air leakage of an outer door and an outer window of a room to move fresh air into a required space, and has the problem that the dirty air in the room can not be discharged and the fresh air can not be sent in most cases;
secondly, the high-temperature and high-humidity fresh air is not subjected to cooling and dehumidifying treatment in summer, and the fresh air is condensed on the inner wall of the blast pipe, attached with dust microorganisms and even becomes a movable space for the bedbugs and the cockroaches to cause secondary pollution;
and thirdly, the outer window of the outer door of a certain room is occasionally opened, and fresh air is leaked out when dirty air is available and is supplemented when the dirty air is available, so that the problem of large fluctuation of the temperature and the humidity of the room is brought when the outdoor atmospheric temperature and humidity deviate from normal values, particularly in severe cold and summer seasons.
The method implements the principle of bidirectional flow fresh air replacement with high efficiency, implements fresh air replacement of buildings, particularly residential houses, and carries out air conditioning treatment of cooling and dehumidifying in summer and heating and humidifying in winter on fresh air input into the houses in severe summer and cold seasons, thereby preventing large fluctuation of indoor temperature and humidity while comprehensively improving the cleanliness and freshness of the secondary environment in the houses, and being still an important mission in the building industry and the air conditioning heating and ventilation industry.
Disclosure of Invention
In order to solve the problems, the invention provides a combined fresh air module which comprises a front air inlet device, a header and a room fan coil which are sequentially connected, wherein the header is communicated with the front air inlet device and the room fan coil; an air inlet fan is arranged in the front air inlet device; when the outdoor fresh air conditioner runs, outdoor fresh air is boosted by the air inlet fan and then is sent into the header, and is sent into a room by the room fan coil after speed reduction, noise reduction and vortex elimination are carried out in the header.
Preferably, the front air intake device comprises a housing and the air intake fan arranged in the housing, the housing is provided with a fresh air port, an air outlet and an air intake channel communicating the fresh air port and the air outlet, and the air intake fan is arranged in the air intake channel;
the header is provided with an air inlet and an air outlet;
the air outlet of the front air inlet device is communicated with the air inlet of the header, and the air outlet of the header is communicated with the room fan coil.
Preferably, the room fan coil comprises an air return box, a fan assembly is arranged in the air return box, an air suction opening and an air return opening are formed in the air return box, the air suction opening is communicated with an air outlet of the header, and the air return opening is communicated with the room.
Preferably, the front air intake device is installed in a ceiling mode, and the fresh air port faces downwards.
Preferably, a filter layer is further arranged in the air inlet channel of the front air inlet device.
Preferably, the air outlet of the front air inlet device is connected with the air inlet of the header through at least one air outlet pipe, and the air outlet pipe penetrates through the cross beam or the shear wall.
Preferably, the air inlet and the air outlet of the header are arranged opposite to each other; or the air inlet and the air outlet of the header are positioned on two sides of the header and are arranged in a staggered manner.
Preferably, an air distribution pore plate is further arranged in the header, and the air distribution pore plate is located between the air inlet and the air outlet of the header.
Preferably, the air distribution hole plate is a flat plate, a folded plate or a bent plate.
Preferably, when the combined fresh air module operates, fresh air flows into the room fan coil pipe in a low-speed laminar flow state of less than or equal to 3 m/s.
Compared with the prior art, the invention has the following technical effects:
1. one machine has two purposes to prevent the temperature and humidity in the room group from greatly fluctuating in the process of fresh air replacement
The combined fresh air module provided by the invention has air conditioning functions of filtering, cooling and dehumidifying (heating and warming) and the like for outdoor introduced fresh air, so that the temperature and humidity of a building space are prevented from being greatly fluctuated in the fresh air replacement process; the combined fresh air module also has the function of internal circulation of a room air conditioner; the machine has two purposes, saves equipment resources and saves space.
2. Effectively implement and eliminate swirl, speed reduction and noise reduction to new trend air current
The header of the combined type fresh air module provided by the invention can eliminate vortex of fresh air from the front air inlet device, reduce speed and reduce noise, so that the fresh air flows into the return air box of the fan coil in a room in a low-speed laminar flow mode less than or equal to 3m/s, the problem that the dynamic balance of the fan impeller is damaged by impact and interference of fresh air flow on the fan impeller in the return air box of the fan coil in the room in a high-speed jet mode is effectively prevented, and the stability and the reliability of the operation of the fresh air module are ensured.
3. Power distribution
According to the combined fresh air module provided by the invention, the front and rear double fans of the header are designed, and under a fresh air replacement operation mode, the air inlet fan in the front air inlet device provides power required by fresh air flow to pass through the filtering layer and pass through the small-diameter air pipe in the shear wall and the header; the fresh air flow flowing into the air return box of the fan coil of the room from the header is injected into dynamic and static pressure required by the indoor space and is provided by the fan in the fan coil; the double-fan layout in front of and behind the fresh air module header implements fresh air flow power dispersion in fresh air operation, and reduces the pressure difference of an inlet and an outlet of a room fan coil, thereby reducing indoor noise generated by fan operation.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts. In the drawings:
FIG. 1 is a diagram of a 135 square meter, four-room, two-living, two-toilet residential housing;
FIG. 2 is a schematic view of a cecum type unidirectional flow fresh air system of a new building under the current situation;
fig. 3 is a schematic structural diagram of a combined fresh air module provided in embodiment 1 of the present invention;
fig. 4 is a top view of the combined fresh air module according to embodiment 1 of the present invention executing fresh air replacement;
fig. 5 is a longitudinal sectional view of the combined fresh air module according to embodiment 1 of the present invention performing fresh air replacement operation;
fig. 6 is a diagram illustrating a room internal circulation executed by the combined fresh air module according to embodiment 1 of the present invention;
fig. 7 is a schematic structural diagram of an air distribution hole plate for adjusting the speed and uniformity of fresh air in the combined fresh air module according to embodiment 2 of the present invention;
fig. 8 is a schematic operational view of an air distribution hole plate for adjusting the speed and uniformity of fresh air in the combined fresh air module according to embodiment 2 of the present invention;
fig. 9 is a schematic structural view of a combined fresh air module provided with an air distribution hole plate in a header in embodiment 2 of the present invention;
fig. 10 is a schematic view of a fresh air replacement operation of a combined fresh air module in which an air distribution hole plate is disposed in a header according to embodiment 2 of the present invention;
fig. 11 is a structure diagram of a fresh air module in which a header is arranged opposite to a room fan coil according to embodiment 3 of the present invention;
fig. 12 is an operational view of a fresh air module with a header opposite a room fan coil as provided in embodiment 3 of the present invention.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
Example 1
Referring to fig. 3 to 6, a combined fresh air module is applied to a room group in a building, and includes a front air intake device 1, a header 2 and a room fan coil 3, which are connected in sequence, where the header 2 is a hollow structure, and for example, a body of the header 2 may be formed by riveting two end caps after being stamped, bent and riveted by a 1.2-1.5 mm cold-rolled sheet or aluminum sheet, and of course, the embodiment is not limited to the cold-rolled sheet aluminum sheet, and may also be a pipeline made of other materials. The header 2 is used for communicating the front air inlet device 1 with the room fan coil 3, so that an air inlet and an air outlet are formed in the header 2.
The front air inlet device 1 comprises a shell and an air inlet fan, wherein the shell is provided with a fresh air port, an air outlet and an air inlet channel for communicating the fresh air port with the air outlet, and the air inlet fan is arranged in the air inlet channel; the air inlet of the air inlet boosting device 1 is communicated with the outside atmosphere, the air outlet of the front air inlet device 1 is communicated with the air inlet of the header 2, and the air outlet of the header 2 is communicated with the room fan coil 3.
The room fan coil 3, i.e. the generalized indoor unit of air conditioner, can be a split type air pipe machine, and also can be a fan coil or an indoor unit used as the terminal of the room of the household central air conditioner. The room fan coil 3 is well known in the art and, therefore, the present invention is not limited to any particular configuration of the room fan coil 3. In this embodiment, the room fan coil 3 includes the air return box 32 and the fan coil body 31 communicated with the air return box 32, the fan coil body 31 includes a housing and a heat exchanger disposed in the housing, and two end ports of the housing are respectively communicated with the air return box 32 and the room. A fan assembly is arranged in the air return box 32, an air suction opening and an air return opening are formed in the air return box 32, the air suction opening is communicated with an air outlet of the header 2, and the air return opening is communicated with a room. When the fresh air module operates, outdoor fresh air is sent into the header 2 after being boosted by the air inlet fan of the front air inlet device 1, is absorbed into the air return box 32 through the air suction port after being decelerated and reduced in noise and eliminated in the header 2, and is finally sent into a room after being subjected to cooling and dehumidifying or heating air conditioning treatment through the fan coil body 31.
In this embodiment, the front air intake device 1 is installed in a ceiling manner, and the fresh air inlet is downward. A filter layer is further arranged in the air inlet channel. In this embodiment, no limitation is imposed on which functional space unit of a room group the front air intake device 1 and the room fan coil 3 are arranged in, for example, a balcony, a living room, a bedroom, a study, a kitchen, a bathroom, a storage room, etc., where the front air intake device 1 is arranged on the balcony, the room fan coil 3 is arranged in the living room, for example, an air outlet of the front air intake device 1 is connected with an air inlet of the header 2 through at least one air outlet pipe 5, and the air outlet pipe 5 penetrates through the beam or the shear wall 4. In order not to destroy the integrity and strength of the beam or the shear wall 4, the air outlet of the front air intake device 1 generally passes through the beam or the shear wall 4 through two or more air outlet pipes 5, that is, the front air intake device 1 is provided with two or more air outlets, and each air outlet is connected with one air outlet pipe 5. When the outdoor fresh air filtering and boosting device operates, outdoor fresh air is sucked at the low position of the front air inlet device 1, and is filtered and boosted and then is conveyed to the header 2.
The header 2 has the function of opening and closing as a fresh air channel, the air inlet of the header is communicated with the air outlet of the front air inlet device 1, and the air outlet of the header is communicated with the air return box 32 of the fan coil 3 in a room. In order to prevent the fresh air flow from impacting and disturbing the fan impeller in the air return box 32 of the room fan coil 3 in a high-speed jet flow mode to destroy the dynamic balance of the fan impeller (the fan assembly in the air return box 32 of the room fan coil 3 comprises two fans, the impellers of the two fans are coaxially arranged at two sides of the same motor), the header 2 eliminates vortex for the fresh air from the front air inlet device 1, and performs speed reduction and noise reduction to enable the fresh air to flow into the air return box 32 of the room fan coil 3 in a low-speed laminar flow mode less than or equal to 3 m/s. The header 2 is horizontally arranged, the shape of the air channel of the header 2 is not limited in the embodiment, and the header 2 is generally designed to be a rectangular section. In this embodiment, the header 2 is a long strip structure, so the air duct in the header 2 is arranged along the length direction of the header 2, and the air inlet and the air outlet of the header 2, which are communicated with the air duct in the header 2, are arranged in the length direction of the header 2 and are located on two sides of the header 2 and are arranged in a staggered manner. When the header 2 passes through the shear wall, the cross beam or the underpass cross beam of the building to be communicated with the front air inlet device 1, the header can pass through by self or can be communicated with a plurality of small-diameter circular tubes to pass through collectively.
When the room fan coil 3 runs, the air conditioner internal circulation can be executed (in this embodiment, when the room fan coil 3 executes the internal circulation, the front air intake device 1 is closed), and the air conditioning treatment of fresh air cooling and dehumidification (heating and warming) can also be executed; the return air box of the room fan coil 3 is communicated with the header 2 and the indoor space below the room fan coil 3, and the air outlet of the fan coil body 31 points to the indoor space.
In this embodiment, when the combined fresh air module performs fresh air replacement, please refer to fig. 4 and 5, an air inlet fan in the front air inlet device 1 and a fan in the room fan coil 3 operate simultaneously, and the front air inlet device 1 sucks outdoor fresh air, filters and boosts the air, and sends the air to the header 2; the fresh air flow eliminates vortex in the header 2, decelerates and reduces noise, and flows into the air return box 32 of the room fan coil 3 in a low-speed laminar flow state less than or equal to 3 m/s; the low-speed fresh air flow flowing into the air return box 32 is pressurized and accelerated again by the room fan coil 3, and then is sent into the room from the air outlet of the fan coil body 31 after being subjected to cooling and dehumidifying or heating and warming air conditioning treatment by the fan coil body 31.
In the embodiment, when a combined fresh air module performs indoor circulation operation, please refer to fig. 6, an air inlet fan in a front air inlet device 1 is stopped, and a room fan coil 3 operates; the return air in the room flows into the return air box 32 through the return air inlet of the return air box 32 of the room fan coil 3, is boosted and accelerated by the fan component in the return air box 32, and is sent back to the room from the air outlet of the fan coil body 31 after being subjected to air conditioning treatment of temperature reduction, dehumidification or heating and temperature rise by the fan coil body 31.
Example 2
The header 2 is a core component of the combined type fresh air module, not only is a fresh air channel provided, but also the fresh air flow reduces speed and noise in the header 2, changes turbulent flow into laminar flow, prevents the fresh air flow from impacting a fan impeller in the air return box 32 of the room fan coil 3 in a high-speed jet turbulent flow mode and even interfering with the fan impeller to damage the dynamic balance of the fan impeller, and enables the fresh air to flow into the air return box 32 of the room fan coil 3 in a low-speed laminar flow mode less than or equal to 3 m/s.
This example is further improved on the basis of example 1. Referring to fig. 7 to 10, in order to effectively realize the above-mentioned "fresh air flow speed reduction and noise reduction" function of the header 2, the air distribution pore plate 6 is disposed in the inner cavity of the header 2, the air distribution pore plate 6 is formed by densely distributing micropores on the plate, and the pores perform throttling, speed reduction and homogenization on the high-speed fresh air flow. The shape of the air distribution hole plate 6 is not particularly limited in this embodiment, and may be a flat plate, a folded plate, or a curved plate. In order to improve the throttling, decelerating and homogenizing effects of the air distribution hole plate 6, the present embodiment performs wave-like bending on the flat plate to increase the area of the air distribution hole plate 6 and the number of ventilation micro-holes.
Example 3
This example is a further improvement on the basis of example 2. The header 2 in embodiment 1 is a strip-shaped structure, the air duct in the header 2 is arranged along the length direction of the header 2, and the air inlet and the air outlet of the header 2, which are communicated with the air duct in the header 2, are arranged in the length direction of the header 2 and are located at two sides of the header 2 and are arranged in a staggered manner, that is, the room fan coil 3 and the front air intake device 1 are also staggered and are not on the same straight line.
Referring to fig. 11 and 12, in the present embodiment, the length of the header 2 is shortened such that the air inlet of the header 2 is opposite to the air outlet, i.e. the room fan coil 3 is opposite (opposite) to the front air intake device 1, and is on the same straight line. The fresh air flow of the front air inlet device 1 has the characteristic of jet flow, is decelerated by the air distribution pore plate 6 and then redistributed to form low-speed and homogenized fresh air flow, and then enters the air return box 32 of the room fan coil 3.
The fresh air flow is changed into low-speed laminar flow from high-speed turbulent flow in the header 2, so that the fresh air flow is prevented from impacting and even interfering a fan volute impeller in a return air box 32 of the room fan coil 3 in a high-speed jet turbulent flow mode to damage the dynamic balance of the fan impeller, the fresh air flows into the return air box 32 of the room fan coil 3 in a low-speed laminar flow mode less than or equal to 3m/s, the operation noise is reduced, and the operation stability is improved.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (10)
1. A combined fresh air module is characterized by comprising a front air inlet device, a header and a room fan coil which are sequentially connected, wherein the header is communicated with the front air inlet device and the room fan coil; an air inlet fan is arranged in the front air inlet device; when the outdoor fresh air conditioner runs, outdoor fresh air is boosted by the air inlet fan and then is sent into the header, and is sent into a room by the room fan coil after speed reduction, noise reduction and vortex elimination are carried out in the header.
2. The combined fresh air module of claim 1, wherein the front air intake device comprises a housing and the air intake fan disposed in the housing, the housing is provided with a fresh air inlet, an air outlet and an air intake channel communicating the fresh air inlet and the air outlet, and the air intake fan is disposed in the air intake channel;
the header is provided with an air inlet and an air outlet;
the air outlet of the front air inlet device is communicated with the air inlet of the header, and the air outlet of the header is communicated with the room fan coil.
3. The combined fresh air module of claim 2 wherein the room fan coil comprises a return air box, a fan assembly is disposed in the return air box, the return air box is provided with an air inlet and an air return opening, the air inlet is communicated with the air outlet of the header, and the air return opening is communicated with the room.
4. The modular fresh air module of claim 2 wherein the front air inlet means is ceiling mounted with the fresh air inlet facing downward.
5. The combined fresh air module of claim 2 wherein a filter layer is further disposed in the air inlet channel of the front air inlet device.
6. The combined fresh air module of claim 2 wherein the air outlet of the front air inlet device is connected to the air inlet of the header through at least one air outlet pipe, the air outlet pipe passing through the cross beam or the shear wall.
7. The combined fresh air module of claim 1, wherein the air inlet and the air outlet of the header are arranged opposite to each other; or the air inlet and the air outlet of the header are positioned on two sides of the header and are arranged in a staggered manner.
8. The combined fresh air module as claimed in claim 1, wherein an air distribution hole plate is further disposed in the header, and the air distribution hole plate is located between the air inlet and the air outlet of the header.
9. The modular fresh air module of claim 8 wherein the air distribution plate is a flat plate, a folded plate or a curved plate.
10. The modular fresh air module of claim 1, wherein fresh air flows into the room fan coil in a low velocity laminar regime of 3m/s or less during operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210416614.2A CN114738889A (en) | 2022-04-20 | 2022-04-20 | Combined fresh air module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210416614.2A CN114738889A (en) | 2022-04-20 | 2022-04-20 | Combined fresh air module |
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| CN114738889A true CN114738889A (en) | 2022-07-12 |
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| CN202210416614.2A Pending CN114738889A (en) | 2022-04-20 | 2022-04-20 | Combined fresh air module |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115095944A (en) * | 2022-05-31 | 2022-09-23 | 上海伯涵热能科技有限公司 | Whole house fresh air system with fan coil arranged adjacent to outer wall |
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