CN113432198A - Fresh air room fresh air system and whole room fresh air system fed by secondary negative pressure - Google Patents
Fresh air room fresh air system and whole room fresh air system fed by secondary negative pressure Download PDFInfo
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- CN113432198A CN113432198A CN202110746577.7A CN202110746577A CN113432198A CN 113432198 A CN113432198 A CN 113432198A CN 202110746577 A CN202110746577 A CN 202110746577A CN 113432198 A CN113432198 A CN 113432198A
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- 230000009471 action Effects 0.000 claims abstract description 11
- 238000007599 discharging Methods 0.000 claims abstract description 5
- 238000009423 ventilation Methods 0.000 claims description 24
- 238000004378 air conditioning Methods 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 7
- 229910052731 fluorine Inorganic materials 0.000 claims description 7
- 239000011737 fluorine Substances 0.000 claims description 7
- 239000003507 refrigerant Substances 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 9
- 238000009434 installation Methods 0.000 description 6
- 230000002457 bidirectional effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 230000003749 cleanliness Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000007781 pre-processing Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000007791 dehumidification Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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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
- 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
- F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
- F24F1/0063—Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the heat exchangers
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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
- 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
- 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
- F24F7/08—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 with separate ducts for supplied and exhausted air with provisions for reversal of the input and output systems
Abstract
The invention relates to a fresh air system for sending fresh air into a fresh air room and a whole fresh air system by utilizing secondary negative pressure, wherein the fresh air system for the room comprises: the room fresh air inlet is formed in the space enclosing structure of the room and used for introducing fresh air outside the room into the room; the room air return pipe is used for discharging the dirty air in the room to the outside of the room; the fan coil is arranged in the room and comprises a shell, an air outlet and an air suction opening are formed in the shell, and the distance between the room fresh air opening and the air suction opening is smaller than the distance between the room fresh air opening and the air return opening of the room air return pipe; the fan is arranged in the shell, under the action of the fan, fresh air entering a room from the fresh air inlet of the room and air in the room can enter the fan coil from the air suction inlet and then are discharged from the air outlet at a high speed to push air in the room to flow and replace the fresh air, and dirty air in the room is pumped out from the air return inlet of the air return pipe of the room and then is discharged out of the room.
Description
Technical Field
The invention relates to the technical field of air exchange system design, in particular to a fresh air system fed into a fresh air room by utilizing secondary negative pressure and a whole fresh air system.
Background
In ventilation systems of buildings including houses, a common negative pressure ventilation mode is that a negative pressure main exhaust pipe and a room return air pipe are adopted for air draft, room fresh air replacement is realized by means of return air pipe negative pressure power, a fan used as room air flow replacement power is omitted, and the installation difficulty and the installation workload of a fresh air system are reduced. However, after the air supply power for air flow replacement in the room is lost, in order to prevent the short circuit of fresh air caused by the fact that the fresh air in the room directly runs to the return air inlet from the fresh air inlet, the pipe orifice of the return air pipe in the room is required to be far away from the fresh air inlet (the distance is pulled as far as possible in the horizontal direction and the vertical direction), so that the length of the return air pipe is increased, the installation workload is increased, the air flow on-way resistance is increased, and a large-area ventilation blind area still exists around the main body of the ventilation air flow in the room, as shown in fig. 1.
The other ventilation mode combining positive pressure and negative pressure is to use a room door fan coil as the tail end of a central air conditioner to circulate in a room and replace fresh air so as to achieve 'one machine dual-purpose'. When the fresh air is replaced, the fresh air from the common spaces such as residential aisles flows into a room fan coil through a fresh air connecting pipe to be pressurized and discharged, the fresh air obtains kinetic energy and is emitted to a facing wall, and dirty air is pressed to flow to a room return air pipe; the room fresh air replacement mode with room airflow circulating power can increase room airflow stirring amplitude, greatly reduce ventilation blind areas and has good fresh air replacement effect; the air return pipe opening of the room can be randomly arranged, and even the air return pipe opening can be arranged near a fresh air opening; however, in this positive and negative pressure combined ventilation mode, the room fan coil is required to be provided with a special "dual-purpose" module for room air conditioner internal circulation and fresh air replacement, and a fresh air connecting pipe is also required to be provided, and the fresh air connecting pipe is required to pass through a ceiling upwards from a passageway and then transversely pass through a cross beam above a room door head during indoor decoration, and is required to be accurately butted and assembled with a fresh air inlet of the fan coil module, so that the engineering quantity is large, and the installation precision requirement is high, as shown in fig. 2.
Disclosure of Invention
In order to solve the problems, the invention provides a fresh air system which utilizes secondary negative pressure to send fresh air into a fresh air room, comprising:
the room fresh air inlet is formed in the space enclosing structure of the room and used for introducing fresh air outside the room into the room;
the room air return pipe is used for discharging the dirty air in the room to the outside of the room;
the fan coil is arranged in the room and comprises a shell, an air outlet and an air suction opening are formed in the shell, and the distance between the room fresh air opening and the air suction opening is smaller than the distance between the room fresh air opening and the air return opening of the room air return pipe; the fan is arranged in the shell, under the action of the fan, fresh air entering a room from the fresh air inlet of the room and air in the room can enter the fan coil from the air suction inlet and then are discharged from the air outlet at a high speed to push air in the room to flow and replace the fresh air, and dirty air in the room is pumped out from the air return inlet of the air return pipe of the room and then is discharged out of the room.
Preferably, the room fresh air opening is arranged on a wall of a room, a door head of a door of the room or a door leaf of the door of the room.
An air door is arranged on the room fresh air port, when the air door is closed, air in a room enters the fan coil pipe from the air suction port under the action of the fan, is discharged from the air outlet and then enters the air suction port, and internal circulation of the room air is realized;
when the air door is opened, under the action of the fan, fresh air outside the room enters the room from the fresh air inlet of the room, then enters the fan coil from the air suction inlet, is discharged into the room through the air outlet, drives dirty air in the room to enter the air return pipe of the room from the air return inlet of the air return pipe of the room, and then is discharged out of the room, and therefore fresh air replacement is completed.
Preferably, the fan coil is an indoor unit of a split air conditioner, and comprises a wall-mounted unit, a cabinet unit, a concealed fan coil and an exposed fan coil; the indoor unit is connected with the outdoor unit of the split air conditioner to form a refrigerant circulation loop.
Preferably, the fan coil is a fan coil which is installed at the tail end of a central air-conditioning water machine in a room in a suspended manner or an indoor unit at the tail end of a central air-conditioning fluorine machine;
the fan coil is connected with the outdoor unit of the central air-conditioning water machine to form a cold and hot water circulation loop, or is connected with the outdoor unit of the central air-conditioning fluorine machine to form a refrigerant circulation loop.
Preferably, the air suction opening of the fan coil is arranged close to the room fresh air opening, and the air return opening of the room air return pipe is arranged far away from the room fresh air opening.
The invention also provides a whole-house fresh air system which is used for a room group, wherein the room group comprises a plurality of rooms and a public space communicated with the rooms, each room comprises the room fresh air system, and a room fresh air port of each room is communicated with the public space; whole room new trend system includes:
the main air inlet is arranged on the outer wall of the public space to realize the communication between the public space and the outside air of the room group, and a fresh air module is arranged on the main air inlet;
the main air outlet is arranged on the outer wall of the room group and communicated with the outside air of the room group; the main air outlet is provided with a main air exhaust module;
and the main exhaust pipe is communicated with the main exhaust port and is respectively communicated with each room through a plurality of room return air pipes.
The invention also provides a whole-house fresh air system which is used for the room group, wherein the room group comprises a plurality of rooms and public spaces communicated with the rooms; whole room new trend system includes:
the main air inlet is arranged on the outer wall of a room and communicated with the outside air of the room group, and a fresh air module is arranged on the main air inlet; the inner wall of the room is provided with a ventilation opening communicated with the public space; the other rooms comprise the room fresh air system, and room fresh air openings of the other rooms are communicated with the public space;
the main air outlet is arranged on the outer wall of the room group and communicated with the outside air of the room group; the main air outlet is provided with a main air exhaust module;
and the main exhaust pipe is communicated with the main exhaust port and is respectively communicated with each room through a plurality of room return air pipes.
The invention also provides a whole-house fresh air system which is used for a room group, wherein the room group comprises a plurality of rooms and a public space communicated with the rooms, each room comprises the room fresh air system, and a room fresh air port of each room is communicated with the public space; whole room new trend system includes:
the main air inlet is arranged on the outer wall of a room and communicated with the outside air of the room group, and a fresh air module is arranged on the main air inlet; the main air inlet is provided with a main air supply pipe which passes through the room and is communicated with the public space;
the main air outlet is arranged on the outer wall of the room group and communicated with the outside air of the room group; the main air outlet is provided with a main air exhaust module;
and the main exhaust pipe is communicated with the main exhaust port and is respectively communicated with each room through a plurality of room return air pipes.
Compared with the prior art, the invention has the following technical effects:
1. increases the air stirring and compression of the ventilation blind area
Through the arrangement that the room fresh air inlet is close to the air suction inlet of the room fan coil and the room fresh air inlet is far away from the air return inlet of the room air return pipe, namely, the distance between the room fresh air inlet and the air suction opening is smaller than the distance between the room fresh air inlet and the air return opening of the room air return pipe, the secondary negative pressure generated by the suction of the fan coil air suction opening which is arranged close to the room fresh air inlet on the basis of the primary negative pressure generated by the suction of the room air return pipe is effectively utilized, so that the air suction opening of the fan coil is positioned in the lowest pressure area of the room, the largest pressure difference is formed between the fresh air inlet of the room and the air suction inlet of the fan coil which are arranged close to each other, the fresh air at the door head is driven to flow into the room rapidly, the air is sucked by the fan coil to be boosted and accelerated to shoot to the opposite wall surface of the room, and then the air is reflected by the opposite wall surface and flows back to the lower part of the room to press the dirty air of the room to enter the air return pipe of the room, so that the air stirring of the room is increased, and the ventilation blind area is eliminated;
2. the new air connecting pipe passing through the suspended ceiling and the beam and the complex installation engineering thereof are saved
The room fresh air inlet and the air suction inlet of the fan coil are arranged close to each other, and the room fresh air inlet and the air return inlet of the room air return pipe are arranged far away from each other and are freely arranged without rigid connection, so long as the space relation between the room fresh air inlet, the air suction inlet of the fan coil and the three openings of the room air return inlet is ensured, secondary negative pressure generated by suction of the air suction inlet of the fan coil arranged close to the room fresh air inlet on the basis of primary negative pressure generated by suction of the room air return pipe can be effectively utilized, aisle fresh air is pulled to flow into a room, room fresh air replacement is implemented with high quality, and complex fresh air connecting pipes penetrating through a suspended ceiling and a beam and installation engineering thereof are omitted.
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 top view of a room fresh air replacement process in which a room fresh air inlet and a return air inlet are arranged far away from each other in a conventional negative pressure ventilation mode;
FIG. 2 is a room fresh air replacement process in which a room door fan coil draws fresh air from a aisle through a fresh air connection pipe in a conventional positive and negative pressure combined house ventilation mode;
FIG. 3 is a schematic view of a structure and operation of a serious fresh air short circuit phenomenon in a fresh air replacement process of a room without a fresh air inlet for positive-pressure high-speed transportation and with a room return air pipe for negative-pressure dirty air extraction;
fig. 4 is a graph showing the distribution of air pressure in the upper space and the lower space of a room driven by a fan coil when a fresh air system sent into a fresh air room by using secondary negative pressure circulates in the room air conditioner under the condition that a return air pipe of the room stops sucking according to the preferred embodiment 1 of the present invention;
fig. 5 is a top view of a room fresh air replacement process in which a room fresh air inlet for sending fresh air into a fresh air room fresh air system by using secondary negative pressure is arranged close to an air suction inlet of a fan coil and is arranged far away from an air return inlet of a room air return pipe according to preferred embodiment 1 of the present invention;
fig. 6 is a three-dimensional view of a room fresh air replacement process in which a room fresh air port fed into a fresh air room fresh air system by using secondary negative pressure is arranged close to an air suction port of a fan coil and is arranged far away from an air return port of a room air return pipe according to preferred embodiment 1 of the present invention (the room fresh air port is arranged on a door head of a room door of a room);
fig. 7 is a three-dimensional view of a room fresh air replacement process in which a room fresh air port, which is fed into a fresh air room fresh air system by using secondary negative pressure and provided in a manner close to an air suction port of a fan coil and far from an air return port of a room air return pipe according to preferred embodiment 1 of the present invention (the room fresh air port is provided at an upper portion of a rotatable door of a room);
fig. 8 is a pressure distribution graph showing that when room fresh air is replaced by sending the room fresh air into a fresh air room system by using secondary negative pressure, secondary negative pressure generated by suction from an air suction inlet of a fan coil is superposed on primary negative pressure generated by suction of a return air pipe of a room, the pressure of a door in the room is lower than that in internal circulation, and the power of fresh air outside the room flowing into the room is larger;
fig. 9 is an operation diagram of a room fresh air system using indoor units of split air conditioners as relay power according to preferred embodiment 2 of the present invention;
fig. 10 is a schematic structural diagram of a fresh air system fed into a fresh air room by using secondary negative pressure and a fresh air system of a whole room according to preferred embodiment 3 of the present invention (fresh air is fed into a sleeve through a passage of a living room);
fig. 11 is a schematic structural diagram of a fresh air system fed into a fresh air room by using secondary negative pressure and a fresh air system of a whole room according to the preferred embodiment 4 of the present invention (fresh air passes through a room and is fed into a sleeve);
fig. 12 is a schematic structural diagram of a fresh air system for feeding fresh air into a fresh air room and a fresh air system for a whole room by using secondary negative pressure according to the preferred embodiment 5 of the present invention (fresh air is fed into a sleeve across one room through a blast pipe).
Detailed Description
The inner wall, outer wall and door and window of the building divide the original wide open building space into a plurality of space units. Taking a house as an example, an inner wall, an outer wall and doors and windows divide an originally wide open building space of about 100 square meters into a plurality of functional units such as a living room, a bedroom, a study room, a kitchen, a toilet, a storage room and the like, and the space units are difficult to achieve natural ventilation with the environment and even difficult to operate even in connection with forced ventilation.
Residential ventilation faces a number of resistance problems: the multiple walls of the outer wall and the inner wall block airflow, a ventilation blind area behind multiple barriers also exists in the house sleeve, and fresh air filtration, heat exchange and the like are carried out to achieve the target of proper indoor temperature, humidity and cleanliness, and all of the ventilation of the house require that a fan is repeatedly applied to the airflow to pressurize and push the airflow to be conveyed.
The key difficulty of house ventilation lies in room ventilation, because, even if the whole room total air inlet module and total air exhaust module are arranged, the condition that fresh air is delivered to fresh air ports of rooms at door heads through a living room passageway and dirty air in the rooms is pumped out of the room through a room return duct and a total exhaust duct is provided, if the fresh air ports of the rooms do not have relay air supply power, the high-efficiency fresh air replacement of the rooms is realized only by the air supply positive pressure of the living room passageway and the room return duct negative pressure power, which is still impossible: firstly, a large number of air leakage channels exist in the hallway to the outside environment of the house, so that the fresh air delivered to the door head of each room from the hallway can only be 1 pa-level 'micro-positive pressure' and cannot be 101pa、102pa-level positive pressure, and when the fresh air in the passage of the living room passes through the fresh air opening of the room, the fresh air is difficult to generate 3 m-The speed of s and the corresponding dynamic pressure head are difficult to generate high-strength stirring to the airflow field in the room; secondly, the room negative pressure generated by the main exhaust module, the main exhaust pipe and the room return air pipe is not enough to pull the fresh air at the fresh air port of the room to generate the speed of more than 3m/s and the corresponding dynamic pressure head, and especially when the return air port of the room return air pipe is arranged close to or even on the same side as the fresh air port of the room, a serious fresh air short circuit also occurs, namely the fresh air flow entering from the fresh air port of the room does not obtain the higher dynamic pressure head to enable the fresh air flow to flow into the main space of the room, but directly rushes to the return air pipe port of the room along the path with the shortest path and the smallest resistance between the fresh air port of the room and the return air pipe, so that the fresh air replacement effect of the room is greatly reduced, and the fresh air resources are wasted, as shown in fig. 3.
The invention provides a fresh air system for sending fresh air into a fresh air room by utilizing secondary negative pressure and a whole fresh air system, aiming at the problem that even if a whole-room total air inlet module and a total air exhaust module are arranged, the fresh air is sent to fresh air ports of all rooms through the total air inlet module and a living room passageway, dirty air of all the rooms is exhausted out of the room through a room return air pipe total exhaust pipe and a total exhaust module, the fresh air ports of the rooms have no relay air supply power and only depend on the positive air supply pressure of the living room passageway and the negative pressure power of the room return air pipe, the fresh air of the rooms can not be prevented from being short-circuited and the high-efficiency fresh air replacement of the rooms can not be realized, the indoor unit of a household central air-conditioning system or a split air conditioner is taken as a base and the fresh air system, the functions of the tail end of the household central air-conditioning system or the indoor unit of the split air conditioner, namely fan coil pipes of all the rooms are expanded and taken as the power of the internal circulation of the room air conditioner, the air conditioner is also used as relay power for room fresh air replacement, and realizes 'one machine dual-purpose' of internal circulation and fresh air replacement; the rigid fresh air connecting pipe between the air supply space such as a living room passageway and the air suction opening of the fan coil of the room is not arranged, so that the space arrangement freedom degree of the fan coil of the room is kept; the fresh air port of the room can be provided with the air door, when the air door is opened, the internal circulation and the fresh air replacement are carried out for two purposes, and when the air door is closed, only the internal circulation of the room is carried out; the invention only requires to establish a proper space relative relationship among a room fresh air inlet, a fan coil air suction opening and a return air inlet of a room return air pipe, namely, the room fresh air inlet and the fan coil air suction opening are required to be arranged close to each other, and the room fresh air inlet and the return air inlet of the room return air pipe are arranged far away from each other, namely, the distance between the room fresh air inlet and the fan coil air suction opening is smaller than the distance between the room fresh air inlet and the return air inlet of the room return air pipe.
When the invention uses the secondary negative pressure to send fresh air into a fresh air room to run, the air door of the fresh air inlet of the room is opened, the return air inlet of the room pumps and exhausts the dirty air in the room, the coil pipe of the fan of the room runs, the return air inlet of the room pumps and exhausts the primary negative pressure in the room, on the basis of the primary negative pressure, the fan coil runs at the air suction opening of the fan coil to generate secondary negative pressure, so that the air suction opening of the fan coil is positioned in the lowest pressure area of a room, a large pressure difference is formed between a room fresh air inlet and a fan coil air suction opening which are arranged close to each other, fresh air is pulled to rapidly rush into a room and is sucked and boosted by the fan coil air suction opening, the fresh air is ejected from an air outlet of the fan coil at a high speed, the ejected fresh air flow is reflected by a wall opposite to the fan coil and then flows back to the side where the fan coil is located, dirty air in the room is pressed to enter a room negative pressure air return opening which is arranged far away from the room fresh air inlet, and a room high-efficiency bidirectional flow fresh air replacement effect is formed.
The following will describe in detail a fresh air system for sending fresh air into a fresh air room and a whole fresh air system using secondary negative pressure provided by the present invention with reference to fig. 4 to 12, the following embodiments are implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments, and those skilled in the art can modify and color the fresh air system without changing the spirit and content of the present invention.
Example 1
Referring to fig. 4 to 8, a fresh air system 2 for sending fresh air into a fresh air room by using secondary negative pressure includes:
and the room fresh air port 24 is formed in the enclosure structure of the room 1 and used for introducing fresh air outside the room 1 into the room 1. The specific location of the room fresh air inlet 24 in the present invention is not limited in particular, and the fresh air inlet may be disposed on the wall of the room 1, or on the head of the door 11 of the room 1, or on the door leaf of the door 11 of the room 1. In the present embodiment, if the room fresh air opening 24 is provided on the wall of the room 1, the room fresh air opening 24 is preferably provided on the inner wall of the room 1. In order to reduce the opening in the wall, the present embodiment may dispose the room fresh air opening 24 on the door head of the room 1, i.e. the door head above the door 11 (please refer to fig. 6), or on the rotatable door leaf of the door 11 of the room 1. In order to simplify the structure and the construction process, the door may not be provided with a door head, and the door frame may be made higher, that is, the door leaf may also be made higher, so the room fresh air opening 24 may be arranged at the upper part, the middle part or the lower part of the door leaf, and specifically may be determined according to the arrangement positions of the return air opening of the room return air duct and the suction opening of the fan coil, please refer to fig. 7, which shows that the room fresh air opening 24 is arranged at the upper part of the door leaf in fig. 7.
A room return duct 23, one end of which is an air return opening 231, arranged in the room 1; the other end is an air outlet; the room return duct 23 is for discharging dirty air in the room 1 to the outside of the room 1.
The fan coil 22 is arranged in the room 1 and comprises a shell, an air outlet 221 and an air suction opening 222 are arranged on the shell, and the distance between the room fresh air opening 24 and the air suction opening 222 is smaller than the distance between the room fresh air opening 24 and the air return opening 232 of the room air return pipe 23; the shell is internally provided with a fan 223, under the action of the fan 223, fresh air entering a room from the room fresh air inlet 24 and air in the room can enter the fan coil 22 from the air suction port 222 and then be discharged from the air outlet 221 at a high speed to push the air in the room to flow and replace the fresh air, and dirty air in the room is pumped out from the air return port 231 of the room air return pipe 23 and then is discharged out of the room.
In this embodiment, the room fresh air inlet 24 is provided with an air door 21, when the air door 21 is closed, under the action of the fan 223, air in a room enters from the air suction opening 222, is discharged through the air outlet 221, and then enters the air suction opening 222, so as to realize room internal circulation;
when the air door 21 is opened, under the action of the fan 223, fresh air outside the room enters the room from the fresh air inlet 24, then enters the fan coil 22 from the air suction port 222, and is discharged into the room through the air outlet 221, the fresh air extrudes dirty air in the room to enter the air return pipe 23 from the air return port 231 of the air return pipe 23, and then is discharged outside the room, and fresh air replacement is completed, wherein the fresh air replacement and the internal circulation are performed synchronously.
The air door 21 can be arranged on the room fresh air port 24, or the air door 21 can be omitted, and the air door can be set according to actual use requirements. If the air door 21 is not arranged on the room fresh air port 24, the fresh air replacement and the internal circulation are synchronously carried out when the room fresh air system is in operation.
And a heat exchanger is also arranged in the shell and is connected with a circulating unit for providing a heat exchange medium for the heat exchanger. In the present embodiment, the fan coil 22 is an indoor unit of a separate air conditioner, and the indoor unit and an outdoor unit of the separate air conditioner are connected to form a refrigerant circulation circuit. Under the action of the fan 223, air enters the housing from the air suction opening 222, passes through the heat exchanger, and is discharged from the air outlet 221. The specific type of the air conditioner is not limited in this embodiment, and the air conditioner may be a central air conditioner, a split air conditioner, or a combination of the central air conditioner and the split air conditioner, for example, the fan coil is a wall-mounted machine, a cabinet machine, a concealed fan coil or an exposed fan coil, the outdoor unit is a central air conditioner water machine outdoor unit, a central air conditioner fluorine machine outdoor unit or an outdoor unit of the split air conditioner, and each indoor unit and each outdoor unit may be combined randomly. Specifically, as an embodiment, the fan coil is a fan coil which is installed at the tail end of a central air-conditioning water machine in a room in a suspended manner or an indoor unit at the tail end of a central air-conditioning fluorine machine, and the fan coil is connected with an outdoor unit of the central air-conditioning water machine to form a cold and hot water circulation loop or is connected with an outdoor unit of the central air-conditioning fluorine machine to form a. As a second embodiment, the fan coil is an indoor fan coil of a split air conditioner installed on an indoor wall of a room or an indoor fan coil of a split air conditioner installed in a ceiling of the room, and the indoor fan coil or the indoor wall is connected to an outdoor unit of the split air conditioner to form a refrigerant circulation loop. As can be seen from the above, the fan coil 22 according to the present embodiment is applicable to any type of air conditioner.
The fan coil 22 of the present embodiment is, for example, the end of a central air conditioning unit, the fan coil 22 is installed in a room 1 in a suspended ceiling manner and is close to the door 11, the fan coil 22 is arranged close to the room fresh air inlet 24, the return air inlet of the room return air duct 23 is arranged far from the room fresh air inlet 24, and the air outlet 221 of the fan coil 22 is higher than the air inlet 222.
The fresh air system sent into the fresh air room by using the secondary negative pressure provided by the embodiment combines the fresh air system with the household central air-conditioning system as a basis, expands the functions of the tail end of the household central air-conditioning system, namely the fan coil 22 of each room, and is used as power for internal circulation of the room air-conditioner and relay power for fresh air replacement of the room, so that the internal circulation and the fresh air replacement are 'dual-purpose' of one machine; in the embodiment, a rigid fresh air connecting pipe between an air supply space such as a living room passageway and an air suction opening 222 of the room fan coil 22 is not arranged, so that the space arrangement freedom degree of the room fan coil 22 is kept; the fresh air port 24 of the room in the embodiment can be provided with the air door 21, when the air door 21 is opened, the internal circulation and the fresh air replacement are carried out for two purposes, and when the air door 21 is closed, only the internal circulation is carried out; in the embodiment, it is required to establish a proper spatial relative relationship between the room fresh air inlet 24, the air suction opening 222 of the fan coil 22 and the room air return opening 231, that is, it is required that the room fresh air inlet 24 and the air suction opening 222 of the fan coil 22 are arranged close to each other, and the room fresh air inlet 24 and the room air return opening 231 are arranged far away from each other, that is, the distance of air circulation between the room fresh air inlet 24 and the air suction opening 222 of the fan coil 22 is smaller than the distance of air circulation between the room fresh air inlet 24 and the air return opening 231 of the room air return pipe 23.
When the internal circulation of the fresh air system sent into the fresh air room by using the secondary negative pressure provided by the embodiment operates, the fan coil 22 starts to operate, the fan 223 boosts the pressure of the sucked indoor air and flows through the heat exchanger to cool and dehumidify (or heat and raise the temperature), then the air is emitted from the air outlet 221 of the fan coil 22 at a high position, is reflected by the opposite wall (and/or door and window) of the room and then flows back to the wall on the side where the fan coil 22 is located, and the air at the lower part of the room is pressed to be supplemented into the fan coil 22 from the air suction port 222 of the fan coil 22, and then the next circulation is started. Air pressure distribution in room air conditioner internal circulation: the airflow pressure at the upper part of the room is high, the airflow pressure at the lower part of the room is low, the airflow pressure at the air outlet 221 of the fan coil 22 is highest, and the airflow pressure at the air suction inlet 222 of the fan coil 22 is lowest, as shown in fig. 4, in the figure, the line of an arrow moving from left to right is the trend of the airflow at the upper part of the internal circulation room, and the straight line which is downward inclined from left to right above the corresponding central axis is the pressure distribution of the airflow at the upper part of the internal circulation; the arrow line from right to left is the trend of the lower airflow of the internal circulation room, and the straight line downwards inclined from right to left below the corresponding central axis is the pressure distribution of the lower airflow of the internal circulation room.
In the fresh air replacement operation of the fresh air system sent into the fresh air room by using the secondary negative pressure provided by the embodiment, the air door 21 of the fresh air opening 24 of the room is opened, the dirty air in the room is pumped and exhausted by the return air opening 231 of the room, the fan coil 22 of the room operates, the return air opening 231 of the room generates the primary negative pressure in the room, the air suction opening 222 of the fan coil 22 generates the secondary negative pressure on the basis of the primary negative pressure generated by the suction of the return air opening 231 of the room, so that the air suction opening 222 of the fan coil 22 is positioned in the lowest pressure area of the room, a large pressure difference is formed between the adjacent fresh air opening 24 of the room and the air suction opening 222 of the fan coil 22, the fresh air is pulled to rapidly flow into the room and is sucked by the air suction opening 222 of the fan coil 22, the pressure is boosted and then is ejected at a high speed from the air outlet 221 of the fan coil 22, the ejected fresh air flow is reflected by the opposite wall and then flows back to the side of the inner wall where the door is positioned, the dirty air in the room is pressed into the return air opening 231 of the negative pressure room which is far away from the fresh air opening 24 of the room, the high-efficiency bidirectional flow fresh air replacement effect of the room is formed, as shown in fig. 5 to 7.
When the fresh air replacement of the room is implemented, the room is integrally made to present negative pressure due to the suction of the room air return pipe 23, so that the negative pressure of the suction port 222 of the fan coil 22 is lower than that in the internal circulation, the pressure difference between the inside and the outside of the room is larger, the power for the fresh air outside the room to flow into the room is larger, and the fresh air in the room can enter conveniently. Fresh air outside the room flows into the fresh air in the room from the fresh air inlet 24 of the room, is sucked by the suction inlet 222 of the fan coil 22 nearby, is boosted and discharged, obtains high kinetic energy and is emitted to the opposite wall surface by a dynamic pressure head, and flows back to the lower part of the room after being reflected by the opposite wall surface to push dirty air in the room to flow to the air return inlet 231 of the air return pipe 23 of the room.
The fresh air system for sending fresh air into a fresh air room by using secondary negative pressure provided by the embodiment is mainly characterized in that a primary negative pressure is generated in the room by pumping and discharging the air return opening 231 (namely, the room air return opening 231) of the room air return pipe 23, the secondary negative pressure is generated by the air suction opening 222 of the fan coil 22 on the basis of the primary negative pressure generated by the room air return opening 231, the two negative pressures are superposed to enable the air suction opening 222 of the fan coil 22 to be in the lowest pressure area in the room, a large pressure difference is formed between the closely arranged room fresh air opening 24 and the air suction opening 222 of the fan coil 22, and fresh air is pulled to rapidly flow into the room, as shown in fig. 8.
In fig. 8, the arrow lines from left to right are the upper air flow direction of the room, and the arrow lines from right to left are the lower air flow direction of the room; the corresponding solid line which inclines downwards from left to right above the transverse shaft is the pressure distribution of the airflow at the upper part of the internal circulation room, and the corresponding solid line which inclines downwards from right to left below the transverse shaft is the pressure distribution of the airflow at the lower part of the internal circulation room; the dotted line which is inclined downwards from left to right above the corresponding transverse shaft is the pressure distribution of the airflow at the upper part of the fresh air replacement room, and the dotted line which is inclined downwards from right to left below the corresponding transverse shaft is the pressure distribution of the airflow at the lower part of the fresh air replacement room.
Obviously, during the replacement of the fresh air, the air suction opening 222 of the fan coil 22 generates secondary negative pressure on the basis of the primary negative pressure generated by the room air return opening 231, the two times of negative pressure are superposed to enable the air suction opening 222 of the fan coil 22 to be located in the lowest pressure area of the room, a large pressure difference is formed between the closely arranged room fresh air opening 24 and the air suction opening 222 of the fan coil 22, and the fresh air is pulled to rapidly flow into the room.
Example 2
In both the embodiment and the embodiment 1, the function of the room fan coil 22 is expanded, and the power of the internal circulation of the room air conditioner and the relay power of the fresh air replacement of the room are used, so that the internal circulation and the fresh air replacement are realized to achieve 'one machine dual-purpose'; in the embodiment, a rigid fresh air connecting pipe between an air supply space such as a living room passageway and an air suction opening 222 of the room fan coil 22 is not arranged, so that the space arrangement freedom degree of the room fan coil 22 is kept; the fresh air port 24 of the room in the embodiment can be provided with the air door 21, when the air door 21 is opened, the internal circulation and the fresh air replacement are carried out for two purposes, and when the air door 21 is closed, only the internal circulation is carried out; in this embodiment, it is required to establish a proper spatial relative relationship between the room fresh air inlet 24, the air suction opening 222 of the fan coil 22 and the room air return opening 231, that is, it is required that the room fresh air inlet 24 and the air suction opening 222 of the fan coil 22 are arranged close to each other, and the room fresh air inlet 24 and the room air return opening 231 are arranged far away from each other, that is, the distance between the room fresh air inlet 24 and the air suction opening 222 of the fan coil 22 is smaller than the distance between the room fresh air inlet 24 and the air return opening 231 of the room air return duct 23.
The difference in this embodiment is that the room fan coil 22 'is not the end of the central unit but is a split room air conditioner indoor unit, the room fan coil 22' being mounted on the inner wall of the room 1. In this embodiment, the indoor unit of the split-type room air conditioner may be connected to an outdoor unit of a central air conditioner, or may be connected to an outdoor unit of the split-type air conditioner. In the embodiment, as long as the fan coil 22' can suck and exhaust air to push indoor air to circulate, when the return air inlet 231 of the remotely arranged room return air pipe 23 sucks dirty air in a room to perform room fresh air replacement, lower secondary negative pressure can be generated at the air inlet 222 of the fan coil 22, so that pressure difference is built inside and outside the room fresh air inlet 24 on the door head of the room to drive aisle fresh air to flow into the room, namely the relay power of whole room fresh air replacement, namely the main power of room ventilation.
In this embodiment, the bidirectional flow fresh air system without the blast pipe is popularized to a scene of adopting a split-type room air conditioner, and the application range of the bidirectional flow fresh air system without the blast pipe is expanded, as shown in fig. 9.
Example 3
The embodiment provides a whole-house fresh air system, which is used for a room group, wherein the room group can be a business office place, a house, or a business and living dual-purpose, and the embodiment does not specifically limit the room group. Referring to fig. 10, the room group includes a plurality of rooms 1 and a common space 6 communicated with the rooms 1, wherein each room 1 includes the fresh air system 2 of embodiment 1 or embodiment 2, and the room fresh air port 24 of each room 1 is communicated with the common space 6; whole room new trend system includes:
the main air inlet is arranged on the outer wall of the public space 6 to realize the communication between the public space 6 and the outside air of the room group, and the main air inlet is provided with a fresh air module 4;
the main air outlet is arranged on the outer wall of the room group and communicated with the outside air of the room group; a main exhaust module 5 is arranged on the main exhaust outlet; the specific arrangement position of the total air outlet is not limited in the embodiment, and the total air outlet can be arranged on the outer wall of a certain room 1, the outer wall of the public space 6 or the outer wall of a kitchen or a toilet;
and the main exhaust pipe is communicated with the main exhaust port and is respectively communicated with each room 1 through a plurality of room return air pipes 23.
In this embodiment, the fresh air module 4 includes the air supply fan, can also include the preprocessing module that the fresh air filtered and cooled and dehumidified (heating up) for carry out the preprocessing such as dust removal, cooled and dehumidified (heating up) to the fresh air.
In the present embodiment, the total exhaust module 5 comprises an exhaust fan.
In this embodiment, the room fresh air system 2 may also be disposed in the public space 6, and certainly, the room fresh air system 2 may not be disposed in the public space 6, and only a fan coil may be disposed, which may be set according to specific use requirements.
When the whole house fresh air replacement operation is performed, the fresh air module 4, the room fan coil 22 and the total exhaust module 5 are started, and the positive pressure pushing of the fresh air module 4, the relay conveying of the room fan coil 22 and the negative pressure pumping and exhausting of the dirty air of the exhaust module 5 generate force at the same time to jointly form the bidirectional flow whole house fresh air replacement; the whole process of the fresh air replacement of the room is divided into three sections:
1. fresh air feeding section
After the fresh air module 4 sucks in environment fresh air and carries out pretreatment such as filtration, temperature reduction and dehumidification (heating up), the fresh air with the temperature, the humidity and the cleanliness up to the standard is directly and positively fed into a sleeve to be used as a passage of a living room of a public space and directly abuts against the door head of each room;
2. fresh air replacement section
Under the primary negative pressure generated by suction of a return air inlet 231 of a room return air pipe 23 and the secondary negative pressure generated by suction of an air suction port 222 of a door head fan coil 22 arranged close to a room fresh air inlet, the air suction port 222 of the fan coil 22 is positioned in the lowest pressure area of the room, a large pressure difference is formed between the room fresh air inlet 24 and the air suction port 222 of the fan coil 22 arranged close to each other, the door head fresh air quickly flows into the room through the room fresh air inlet 24, is sucked by the fan coil 22, is boosted, accelerated and is emitted to the outer wall side of the room, and is reflected by the outer wall and then flows back to one side of the inner wall where the door is positioned, so that dirty air in the room is pressed to enter the room return air pipe 23;
3. dirty air exhaust section
The dirty air entering the room return duct 23 flows into the main exhaust duct rapidly, enters the exhaust module 5, is boosted by the exhaust fan again, and is finally exhausted to the outdoor atmosphere for diffusion.
Example 4
The present embodiment is partially adjusted based on embodiment 3, and the difference between the present embodiment and embodiment 3 is that the total air inlet of the whole house fresh air system is not arranged on the outer wall of the public space, but arranged on the outer wall of a certain room, and the specific structure is as follows.
Referring to fig. 11, a whole house fresh air system is used for a room group, wherein the room group comprises a plurality of rooms and a common space 6 communicated with the rooms; whole room new trend system includes:
the main air inlet is arranged on the outer wall of a room, and the room where the main air inlet is located is called a fresh air ventilation room 1' in the embodiment. The main air inlet is communicated with the outside air of the room group, and a fresh air module 4 is arranged on the main air inlet; the inner wall of the fresh air ventilation room 1' is provided with a ventilation opening communicated with the public space 6; other rooms comprise the fresh air system 2 which is sent into the fresh air room by utilizing secondary negative pressure and is described in embodiment 1 or embodiment 2, other rooms provided with the fresh air system 2 are called as fresh air replacement rooms 1 in the embodiment, and room fresh air openings of the fresh air replacement rooms 1 are communicated with the public space 6;
the main air outlet is arranged on the outer wall of the room group and communicated with the outside air of the room group; a main exhaust module 5 is arranged on the main exhaust outlet; the specific arrangement position of the total air outlet is not limited in the embodiment, and the total air outlet can be arranged on the outer wall of a certain room, the outer wall of the public space 6 or the outer wall of a kitchen or a toilet;
and the main exhaust pipe is communicated with the main exhaust port and is respectively communicated with the fresh air replacement room 1 through a plurality of room return air pipes 23.
Example 5
The present embodiment is partially adjusted based on embodiment 3, and the difference between the present embodiment and embodiment 3 is that the total air inlet of the whole house fresh air system is not arranged on the outer wall of the public space, but arranged on the outer wall of a certain room, and the specific structure is as follows.
Referring to fig. 12, a whole house fresh air system is used for a room group, wherein the room group comprises a plurality of rooms 1 and a common space 6 communicated with the rooms; whole room new trend system includes:
the main air inlet is arranged on the outer wall of a room and communicated with the outside air of the room group, and a fresh air module is arranged on the main air inlet; and a main air supply pipe 7 is arranged on the main air inlet, and the main air supply pipe 7 penetrates through the room and is communicated with the public space 6. In this embodiment, the room where the main air inlet is located and the other rooms where the main air inlet is not located are both provided with the fresh air system 2 which is described in embodiment 1 or embodiment 2 and sends the fresh air to the fresh air room by using secondary negative pressure;
the main air outlet is arranged on the outer wall of the room group and communicated with the outside air of the room group; a main exhaust module 5 is arranged on the main exhaust outlet; the specific arrangement position of the total air outlet is not limited in the embodiment, and the total air outlet can be arranged on the outer wall of a certain room, the outer wall of the public space 6 or the outer wall of a kitchen or a toilet;
and the main exhaust pipe is communicated with the main exhaust port and is respectively communicated with the fresh air replacement room 1 through a plurality of room return air pipes 23.
Claims (9)
1. The utility model provides an utilize secondary negative pressure to send into new trend room new trend system which characterized in that includes:
the room fresh air inlet is formed in the space enclosing structure of the room and used for introducing fresh air outside the room into the room;
the room air return pipe is used for discharging the dirty air in the room to the outside of the room;
the fan coil is arranged in the room and comprises a shell, an air outlet and an air suction opening are formed in the shell, and the distance between the room fresh air opening and the air suction opening is smaller than the distance between the room fresh air opening and the air return opening of the room air return pipe; the fan is arranged in the shell, under the action of the fan, fresh air entering a room from the fresh air inlet of the room and air in the room can enter the fan coil from the air suction inlet and then are discharged from the air outlet at a high speed to push air in the room to flow and replace the fresh air, and dirty air in the room is pumped out from the air return inlet of the air return pipe of the room and then is discharged out of the room.
2. A system for introducing fresh air into a fresh air room by using secondary negative pressure as claimed in claim 1, wherein the room fresh air inlet is provided on a wall of the room, a door head of a door of the room or a door leaf of the door of the room.
3. A system for sending fresh air into a fresh air room by using secondary negative pressure as claimed in claim 1, wherein an air door is arranged on the fresh air inlet of the room, when the air door is closed, the air in the room enters the fan coil pipe from the air suction port under the action of the fan, is discharged from the air outlet and then enters the air suction port, so that the internal circulation of the air in the room is realized;
when the air door is opened, under the action of the fan, fresh air outside the room enters the room from the fresh air inlet of the room, then enters the fan coil from the air suction inlet, is discharged into the room through the air outlet, drives dirty air in the room to enter the air return pipe of the room from the air return inlet of the air return pipe of the room, and then is discharged out of the room, and therefore fresh air replacement is completed.
4. The system of claim 1, wherein the fan coil is an indoor unit of a split air conditioner, such as a wall-mounted unit, a cabinet unit, a concealed fan coil, or an exposed fan coil; the indoor unit is connected with the outdoor unit of the split air conditioner to form a refrigerant circulation loop.
5. A fresh air system for sending fresh air into a fresh air room by using secondary negative pressure as claimed in claim 5, wherein the fan coil is a fan coil at the tail end of a central air-conditioning water machine or an indoor unit at the tail end of a central air-conditioning fluorine machine, and the ceiling of the fan coil is installed in the room;
the fan coil is connected with the outdoor unit of the central air-conditioning water machine to form a cold and hot water circulation loop, or is connected with the outdoor unit of the central air-conditioning fluorine machine to form a refrigerant circulation loop.
6. The system of claim 1, wherein the suction opening of the fan coil is located near the room fresh air inlet, and the return air inlet of the room return air duct is located far from the room fresh air inlet.
7. A whole house fresh air system for a room group comprising a plurality of rooms and a common space communicating with each room, wherein each room comprises the room fresh air system of any one of claims 1 to 6, and the room fresh air port of each room communicates with the common space; whole room new trend system includes:
the main air inlet is arranged on the outer wall of the public space to realize the communication between the public space and the outside air of the room group, and a fresh air module is arranged on the main air inlet;
the main air outlet is arranged on the outer wall of the room group and communicated with the outside air of the room group; the main air outlet is provided with a main air exhaust module;
and the main exhaust pipe is communicated with the main exhaust port and is respectively communicated with each room through a plurality of room return air pipes.
8. A whole-house fresh air system is characterized by being used for a room group, wherein the room group comprises a plurality of rooms and a public space communicated with the rooms; whole room new trend system includes:
the main air inlet is arranged on the outer wall of a room and communicated with the outside air of the room group, and a fresh air module is arranged on the main air inlet; the inner wall of the room is provided with a ventilation opening communicated with the public space; the other room comprises the room fresh air system as claimed in any one of claims 1 to 6, and the room fresh air port of the other room is communicated with the public space;
the main air outlet is arranged on the outer wall of the room group and communicated with the outside air of the room group; the main air outlet is provided with a main air exhaust module;
and the main exhaust pipe is communicated with the main exhaust port and is respectively communicated with each room through a plurality of room return air pipes.
9. A whole house fresh air system for a room group comprising a plurality of rooms and a common space communicating with each room, wherein each room comprises the room fresh air system of any one of claims 1 to 6, and the room fresh air port of each room communicates with the common space; whole room new trend system includes:
the main air inlet is arranged on the outer wall of a room and communicated with the outside air of the room group, and a fresh air module is arranged on the main air inlet; the main air inlet is provided with a main air supply pipe which passes through the room and is communicated with the public space;
the main air outlet is arranged on the outer wall of the room group and communicated with the outside air of the room group; the main air outlet is provided with a main air exhaust module;
and the main exhaust pipe is communicated with the main exhaust port and is respectively communicated with each room through a plurality of room return air pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2022/102283 WO2022247958A1 (en) | 2021-05-28 | 2022-06-29 | Room fresh air system using secondary negative pressure to send fresh air, and whole-house fresh air system |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110597245 | 2021-05-28 | ||
| CN2021105972457 | 2021-05-28 |
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| CN113432198A true CN113432198A (en) | 2021-09-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110746578.1A Pending CN113432199A (en) | 2021-05-28 | 2021-06-30 | Large-depth non-concave energy-saving residential structure |
| CN202110746577.7A Pending CN113432198A (en) | 2021-05-28 | 2021-06-30 | Fresh air room fresh air system and whole room fresh air system fed by secondary negative pressure |
| CN202110743087.1A Pending CN113432197A (en) | 2021-05-28 | 2021-06-30 | Adopt not having blast pipe bidirectional flow local new trend system building |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110746578.1A Pending CN113432199A (en) | 2021-05-28 | 2021-06-30 | Large-depth non-concave energy-saving residential structure |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110743087.1A Pending CN113432197A (en) | 2021-05-28 | 2021-06-30 | Adopt not having blast pipe bidirectional flow local new trend system building |
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| CN115095943A (en) * | 2022-05-31 | 2022-09-23 | 上海伯涵热能科技有限公司 | Bidirectional flow whole house fresh air system |
| 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 |
| CN115095942A (en) * | 2022-05-31 | 2022-09-23 | 上海伯涵热能科技有限公司 | Bidirectional flow full-house fresh air system with toilet in room |
| CN115235018A (en) * | 2022-07-18 | 2022-10-25 | 上海槿木建筑设计工程有限公司 | Fresh air system for ultralow-energy-consumption building |
| CN115235018B (en) * | 2022-07-18 | 2023-08-15 | 上海槿木建筑设计工程有限公司 | Fresh air system for ultralow energy consumption building |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113432199A (en) | 2021-09-24 |
| CN113432197A (en) | 2021-09-24 |
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